HUBEI AGRICULTURAL SCIENCES

Individual tree species classification based on UAV hyperspectral and LiDAR data

ZHANG Meng, WANG Hong, LIU Si-si, YANG Wen-cai

2025, 64(4): 1-6. doi:10.14088/j.cnki.issn0439-8114.2025.04.001

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UAV LiDAR data were used for individual tree segmentation to obtain tree crown boundaries, and UAV hyperspectral data within the crown boundaries were extracted. Feature fusion schemes were constructed based on band reflectance, vegetation indices, and texture indices, including scheme 1 (band reflectance), scheme 2 (vegetation indices), scheme 3 (texture indices), scheme 4 (band reflectance + vegetation indices), scheme 5 (band reflectance + texture indices), scheme 6 (vegetation indices + texture indices), and scheme 7 (band reflectance + vegetation indices + texture indices). The random forest algorithm was applied to classify individual tree species in the Gudao shelterbelt of the Yellow River Delta, achieving classification of four species: Robinia pseudoacacia, Sophora japonica, Ulmus pumila, and Fraxinus chinensis. The results showed that using only texture indices yielded the worst classification accuracy (0.333) and Kappa coefficient (0.056). Scheme 7 achieved the best classification results, with an accuracy of 0.917 and a Kappa coefficient of 0.887. Scheme 5 achieved a classification accuracy of 0.916 and a Kappa coefficient of 0.886. While maintaining classification accuracy, scheme 5 significantly reduced feature dimensionality. Therefore, the combination of spectral reflectance and spatial texture features was recommended as the optimal scheme.

Improved Faster R-CNN model-based maturity detection method for Ding’ao bayberry

LIU Yu-yao, PENG Qiong-yin

2025, 64(4): 7-13. doi:10.14088/j.cnki.issn0439-8114.2025.04.002

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To rapidly and accurately detect the maturity levels of Ding’ao bayberry (Myrica rubra) in complex natural growth environments, an improved Faster R-CNN model (ConvNeXt-T+SE+FPN)-based maturity detection method was proposed. ConvNeXt-T was adopted as the backbone feature extraction network to enhance detection capabilities in complex scenarios. The SE attention mechanism and Feature Pyramid Network (FPN) were introduced to improve the model’s sensitivity to maturity-related features and detection of small-target fruits. Compared to ResNet50, ConvNeXt-T+SE, ConvNeXt-T+FPN, and ConvNeXt-T+SE+FPN increased the mean average precision (mAP) by 14.75%, 19.85%, and 21.86%, respectively. The ConvNeXt-T+SE+FPN configuration achieved the largest mAP improvement, effectively enhancing detection performance for different maturity levels of Ding’ao bayberry. Through training and testing on the Ding’ao bayberry image dataset, the improved Faster R-CNN model demonstrated high accuracy in detecting different maturity levels. The average precision (AP) for unripe, semi-ripe, near-ripe, and fully ripe fruit recognition was 96.90%, 94.63%, 95.91%, and 97.58%, respectively, with an mAP of 96.26%. Compared to the original Faster R-CNN model, the improved model achieved a 21.86% increase in mAP. The improved Faster R-CNN model effectively enhanced the detection accuracy of Ding’ao bayberry maturity, providing strong support for intelligent harvesting of bayberry fruits.

Fertilizer irrigation system based on fuzzy PID algorithm

WANG Zhi-hua

2025, 64(4): 14-18. doi:10.14088/j.cnki.issn0439-8114.2025.04.003

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To achieve precise fertilization in farmland irrigation and meet the demand for fertilizer concentration at different growth stages of crops, a fertilizer irrigation system based on the fuzzy PID algorithm was designed. On the basis of traditional PID control, this system combined fuzzy theory to transform expert agricultural irrigation experience into fuzzy control rules. By using the deviation of fertilizer concentration and the rate of deviation change, the fuzzy logic rules were applied to adjust PID parameters in real time, thereby precisely controlling the electrical conductivity (EC) of the fertilizer solution. In the simulation test of farmland irrigation, the fuzzy PID design controlled by PLC had a shorter response time than traditional PID, reduced the time to reach steady state by 70 s, and exhibited faster reaction speed and better performance, enhancing the precision of the fertilizer irrigation system.

Microsystem for bioactive small molecule detection services based on WeChat mini program platform

CUI Jian-hua, LI Ai-xue, WU Rui-gang

2025, 64(4): 19-23. doi:10.14088/j.cnki.issn0439-8114.2025.04.004

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To improve the application efficiency of agricultural electrochemical sensors in bioactive small molecule detection, a microsystem for bioactive small molecule detection services was developed based on the WeChat Mini Program platform. The system consisted of front-end and back-end components. Interactive services were implemented using VUE, MINA, and JavaScript technologies, providing users with one-stop services including online appointment, sample submission, result inquiry, agency services, and account/order information management. By integrating amino acids, fatty acids, mycotoxins,plant regulators,and other materials with electrochemical technology, the system detected specific molecules, cells, and other biomarkers and generated reports. The system achieved rapid and accurate identification and quantitative analysis of active small molecules in biological samples.

Karyotype analysis of medicinal plant Polygonatum sibiricum based on ImageJ

YOU Lei, ZHU Zhe-hui, SHI Xian-ming, ZHANG Ze-zhi, ZHENG Lan-lan, ZHANG Yong-hong

2025, 64(4): 24-30. doi:10.14088/j.cnki.issn0439-8114.2025.04.005

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Using the medicinal plant Polygonatum sibiricum as an example, a karyotype analysis method and workflow for plant chromosomes was established based on the open-source image processing software ImageJ. The ImageJ software was opened, and the Stowers plugin package and LEVAN plugin were loaded. The acquired microscopic images of Polygonatum sibiricum metaphase chromosomes were processed through image preprocessing, chromosome contour selection, chromosome segmentation and debris removal, and chromosome cropping to obtain chromosome morphological data. Photoshop software was used for karyotype arrangement, and Excel software was used to draw the karyotype ideogram. The results showed that, according to Levan’s karyotype classification standard, the karyotype formula of Polygonatum sibiricum was 2n = 24 = 4m + 10sm + 10st, with an asymmetry index of 72.11%, belonging to the 3B type. This method proposed a solution strategy for chromosome contact or overlap in karyotype images, with the advantages of being open-source, free, having a clear operational workflow, and providing accurate interaction.

Effects of urea or potassium sulfate compound fertilizer on roots of Bupleurum chinense DC. and soil

TANG Bing, ZHAO Xiu-Mei, YOU Jing-Mao, ZHANG Ze-zhi, LI Kun

2025, 64(4): 31-34. doi:10.14088/j.cnki.issn0439-8114.2025.04.006

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The aim of this study was to understand the effects of fertilizers on the yield, contents of medicinal components and rhizosphere soil of Bupleurum chinense DC. in Shiyan City, Hubei Province. Under certain conditions of basal fertilizer, the effects of urea and potassium sulfate compound fertilizer on root growth, total saponins content, water-soluble aggregates, organic matter content, nitrogen content, phosphorus content and potassium content in rhizosphere soil of two-year-old B. chinense were studied. The results showed that when the basal fertilizer was 750 kg/hm² of potassium sulfate compound fertilizer (N-P₂O₅-K₂O=14-16-15, total nutrient ≥45%) and 750 kg/hm² of the compound probiotic fertilizer(N-P₂O₅-K₂O≥5%, organic matter≥45%), applying urea or potassium sulfate compound fertilizer twice as topdressing had no significant effects on fresh root weight, main root length, total saponins content, root configuration, soil water-soluble aggregates and rhizosphere nutrients of two-year-old B. chinense DC., and the soil nitrogen and phosphorus content was low. This might be that under certain soil nutrient conditions, single topdressing urea or potassium sulfate compound fertilizer was helpful to the growth of B. chinense, but B. chinense has more demand for soil phosphorus, resulting in less phosphorus content in lateral root and rhizosphere soil, so topdressing requires mixed application of nitrogen, phosphorus and potassium fertilizers.

Phenotypic identification and evaluation of different germplasm resources of Xi Pinellia ternata

YANG Zhen, LA Gui-xiao, SHI Gui-xia, GE Xiao-jin, YUAN Chun-yan, WANG Bai, YU Xiu-yue, JI Xin-yuan, WANG Wen-yu, CHEN Dao-yu

2025, 64(4): 35-41. doi:10.14088/j.cnki.issn0439-8114.2025.04.007

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17 Xi Pinellia ternata resource materials from 14 regions in Xi County, Huaibin County and Shihe District were collected to identify and evaluate their phenotypes. The results showed that there were 8 types of morphological characteristics among the Xi Pinellia ternata resources. Analysis of 12 quantitative phenotypic traits showed that the variation index of fruit number was the largest, at 44.328%, and the variation index of the growth period was the smallest, at 6.040%. Correlation analysis showed that there was a significant positive correlation among 6 pairs of traits, and there was an extremely significant positive correlation among 5 pairs of traits. Principal component analysis simplified all phenotypic traits into four principal components, and the cumulative contribution rate was 74.32%. The cluster analysis could be divided into three groups: Group I was suitable for screening the high-yielding Pinellia ternata; Group II was suitable for screening Xi Pinellia ternata for seed breeding; Group III was suitable for selecting Xi Pinellia ternata for bulbil breeding. Through comprehensive evaluation, XXBX1 could be used for high-yield Xi Pinellia ternata variety breeding; XXBX6 could be used for seed breeding; HBBX16 could be used for bulbil breeding.

Technology of ecological seedling and interplanting Belamcanda chinensis with maize in Hubei Province

WANG Ming-hui, XIA Zhen-zhou, YAN Hong-yuan, TAN Zhong-chuan, LIN Tian-sheng, CHEN Zhi-gang, WANG Bin, LI Ning, XIONG Fei, DING Feng-ju, ZOU Cai-qiong

2025, 64(4): 42-45. doi:10.14088/j.cnki.issn0439-8114.2025.04.008

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The ecological seedling raising technology of Belamcanda chinensis was studied by using the method of interplanting maize. The results showed that there were significant differences between each Belamcanda chinensis treatment and the control. 3 rows of Belamcanda chinensis seedling interplanting with 2 rows of maize in north-south row orientation had the highest number of Belamcanda chinensis seedlings of 3.568 5 million/hm², an increase of 134.38% compared with the control; there were significant differences in chlorophyll content, leaf surface humidity and leaf surface temperature in each treatment compared with the control. The soil temperature and Belamcanda chinensis leaf temperature were the lowest, and the species, quantity and fresh weight of weeds were the lowest in north-south interplanting 5 rows of Belamcanda chinensis with 4 rows of maize; there was no significant difference in plant height, stem diameter, seed weight and yield among each treatment of the north-south and the east-west in interplanting Belamcanda chinensis with maize. The model with the highest economic benefit was interplanting 3 rows of Belamcanda chinensis with 2 rows of maize, running north-south, with the economic benefit of Belamcanda chinensis seedling reaching 356 900 yuan/hm², and the economic benefit of interplanting Belamcanda chinensis with maize reaching 366 000 yuan/hm².

Genetic characteristics and correlation analysis of plant height, flag leaf and spike traits in common wheat

ZHOU Fang-ju, ZHANG Dao-rong, LING Dong, TANG Qing-yi, SUN Hua-wei, TANG Qing, WANG Zhi-shun, LIU Xian-bin, WANG Xin, TANG San-ming

2025, 64(4): 46-50. doi:10.14088/j.cnki.issn0439-8114.2025.04.009

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The variation coefficient and correlation of plant height, flag leaf length, flag leaf width, spikelet number and kernel number per spike of the main stem in 20 wheat (Triticum aestivum L.) varieties planted in Hubei Province were analyzed. The results indicated that the variation coefficients of plant height and spikelet number were small, suggesting high genetic stability. Conversely, the variation coefficient of degenerate spikelet number was larger, indicating a more significant influence from the environment. There were varying degrees of correlation among the traits. The single-spike weight had a highly significant positive correlation with flag leaf length, flag leaf width, kernel number per spike, spike length and spikelet number (P<0.01), while it had a highly significant negative correlation with degenerate spikelet and neck length of spike (P<0.01). Degenerate spikelet number and neck length of spike also had a significant negative correlation with kernel number per spike and spikelet number (P<0.05).

Detection of quality and resistance genes of wheat varieties (lines) in Huang-Huai wheat region by KASP genotyping technology

WANG Zhi, LI Han-bing, WANG Wei, ZHANG Yu-jie, TIAN Mi, WANG Wei-wei

2025, 64(4): 51-57. doi:10.14088/j.cnki.issn0439-8114.2025.04.010

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To elucidate the genetic basis of quality and resistance traits in the dominant wheat （Triticum aestivum L.） varieties from the Huang-Huai wheat region, 99 wheat varieties (lines) were genotyped using 12 KASP markers related to quality, disease resistance, drought resistance and pre-harvest sprouting resistance. The results revealed that 33 materials carried the Glu-D1d gene encoding high-quality gluten subunit 5+10, and 39 materials contained the Glu-A1 gene encoding Ax1/Ax2* strong-gluten haplotype. In terms of disease resistance, only 12 materials exhibited Lr68, a leaf rust resistance gene, and none of the tested materials were found to carry the Fhb1 gene for Fusarium head blight resistantce. For sprout resistance, the haplotypes TaSdr-B1a, Rio Blanco type, and Hap-H associated with pre-harvest sprouting were detected in 9, 73, and 13 materials, respectively. In drought resistance, there were 53 materials carried 3Ba drought resistant haplotype of the COMT-3B gene, 45 materials possessed the TaDREB-B1a drought resistance haplotype, and 89 materials carried the A2a drought resistance haplotype of the TaSST-4A gene. It could be seen that the drought resistance genes detected in wheat varieties in Huang-Huai wheat region were widely distributed and accounted for a relatively high proportion, while the excellent haplotypes in disease resistance accounted for a relatively small proportion. Therefore, it was urgent to strengthen the introduction and utilization of disease resistance genes in breeding strategies.

Screening and identification of rhizobia from selenium-enriched soybean and their effects on growth and selenium accumulation of soybean

HU Ye-qing, ZHANG Jie, HE Ting-ting, ZHANG Yue, LI Cong-hu, LIU Yun-shuang, HU Ting

2025, 64(4): 58-63. doi:10.14088/j.cnki.issn0439-8114.2025.04.011

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Selenium-tolerant rhizobia were screened and identified from selenium-enriched soybean[Glycine max (Linn.) Merr.] nodules. Sodium selenate and sodium selenite were used as selenium sources, and different concentration gradients were set to study the selenium tolerance of rhizobia. Zhonghuang 301 was used as the test material, and the field experiment was set up with blank control (CK), rhizobium treatment (Rb), sodium selenite treatment (Se), rhizobium and sodium selenite combination treatment (Rb+Se) to study the effects of rhizobia combined with selenium on the growth and selenium accumulation of soybean. The results showed that 1.0 mg/L sodium selenite treatment had a certain promoting effect on the growth of rhizobia. Compared with CK, the plant height, main root length and dry weight per plant of soybean treated with Rb+Se increased by 78.67%, 82.98% and 69.57%, respectively, the selenium content of roots, stems, leaves, grains and nodules increased by 3.53,2.44,1.37,2.63 and 1.82 times, respectively, and the selenium content of soil increased by 2.10 times. Compared with Rb treatment, the plant height, main root length and dry weight per plant of soybean treated with Rb+Se increased by 21.45%, 32.31% and 14.71%, respectively, the selenium content of roots, stems, leaves, grains and nodules increased by 113.04%, 173.33%, 65.21%, 160.70% and 49.50%, respectively, and the selenium content of soil increased by 125.65%. Compared with Se treatment, the plant height, main root length and dry weight per plant of soybean treated with Rb+Se increased by 45.13%, 56.31% and 50.00%, respectively, the selenium content of roots, stems, leaves, grains and nodules increased by 30.14%, 50.01%, 27.96%, 22.59% and 18.19%, respectively, and the selenium content of soil increased by 19.23%. It could be seen that the combination of rhizobium and selenium was beneficial to the growth of soybeans, which could enhance the content of selenium in various parts of soybeans, and also increase the accumulation of selenium in cultivated soil.

Effects of nitrogen and potassium fertilizer reduction on soil physicochemical properties and potato yield in sandy farmland

WANG Wen, WU Teng-shuai, LIU Meng-yuan, BAI Hai-qing, LIU Bo-lin

2025, 64(4): 64-69. doi:10.14088/j.cnki.issn0439-8114.2025.04.012

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The purpose of this study was to explore the suitable fertilizer reduction strategy for green and high-yield cultivation of potato（Solanum tuberosum L.） in Yulin sandy area. The potato V7 variety was used as test material. Conventional full fertilization was used as control (CK, N100%, P100%, K100%), and its total nitrogen fertilizer (N), phosphate fertilizer (P₂O₅) and potassium fertilizer (K₂O) were applied 300.0 kg/hm², 390.0 kg/hm² and 120.0 kg/hm² respectively. Four fertilizer reduction treatments were established, including F1 (N95%, P100%, K100%), F2 (N90%, P100%, K100%), F3 (N100%, P100%, K95%) and F4 (N100%, P100%, K90%). The effects of different fertilizer reduction treatments on soil physicochemical properties in 0~20 cm soil layer, potato yield and commodity potato rate were analyzed. The results showed that in the early stage of potato growth, the topsoil water content of F2 treatment was significantly higher than that of F3, F4 and CK treatments by 11.66%~26.82 (P<0.05), and the soil temperature was significantly higher than that of F4 treatment by 7.87%~12.43% (P<0.05). In the middle and late stages of potato growth, the soil temperature and soil compactness of F2 treatment were lower than those of F3, F4 and CK treatments. In the whole potato growth stage, the topsoil pH value of CK treatment was the lowest, the soil available nitrogen content of F2 treatment was significantly lower than that of CK treatment by 18.24%~36.31% (P<0.05). The soil available potassium content of F2 treatment was significantly higher than that of F4 treatment by 8.31%~11.74% (P<0.05). The potato yield of F2 treatment was significantly higher than that of F1, F3 and F4 treatments by 8.01%~15.53% (P<0.05), but there was no significant difference between F2 and CK, and the commodity rate was significantly higher than that of other treatments by 5.99%~17.58% (P<0.05). In conclusion, the fertilization measures of 10% reduction of nitrogen fertilizer and full potassium fertilizer were the suitable fertilization strategies for green and high-yield cultivation of potato in Yulin sandy area.

Spatio-temporal evolution and prediction of carbon storage in Wuling Mountain area of Guizhou Province based on PLUS-InVEST model

LUO Li-bing, WANG Xian-hua, ZOU Xu-an

2025, 64(4): 70-76. doi:10.14088/j.cnki.issn0439-8114.2025.04.013

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Taking the Wuling Mountain area of Guizhou Province as the research area, according to the driving factors, land use data from 2000 to 2020 and the law of land expansion, the spatial distribution pattern of land use in the study area in 2030 under the natural development scenario, cultivated land protection scenario and ecological protection scenario was simulated by the PLUS-InVEST model, and the spatio-temporal evolution characteristics of carbon storage from 2000 to 2030 were analyzed. The results showed that, from 2000 to 2020, the area of forest land and construction land in the study area consistently increased, the area of water bodies initially decreased and then increased, and the areas of cultivated land, grassland and wetland continued to decline. The total carbon initially increased and then decreased from 2000 to 2020. From 2020 to 2030, under the natural development scenario, the carbon storage in the study area would continue to decline, while under the cultivated land protection and ecological protection scenarios, the carbon storage would increase, with the ecological protection scenario showing a more significant effect. Overall, from 2000 to 2030, carbon density exhibited a spatial distribution pattern of being higher in the southeast and lower in the northwest. Meanwhile, there was abundant and dense carbon storage centered around the Fanjing Mountain Nature Reserve and its adjacent areas. Declining regions were mainly distributed near administrative centers, areas with convenient transportation, and along the Wujiang River and Yuanjiang River basins in the study area. Under the ecological protection scenario, land use in the Wuling Mountains area of Guizhou Province could strategically integrate various land functions, shifting carbon storage from a decrease to an increase. This was crucial for optimizing regional land space and ecological restoration.

Preparation of different light substrates from the processing residues of Camellia oleifera and their effects on seedling cultivation

LI Hui, ZHANG Ming-gang, WEI Ying-ying

2025, 64(4): 77-83. doi:10.14088/j.cnki.issn0439-8114.2025.04.014

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The processing residues of Camellia oleifera were used for composting and fermentation. Then the mature organic fertilizer was mixed with lightweight additives to prepare eight different lightweight substrates. The effects of these lightweight substrates on the morphological indicators of seedlings were studied by the seeding test of C. oleifera. Finally, the seedling effects of eight lightweight substrate treatments were comprehensively evaluated by factor analysis, and the optimal lightweight substrate formula was selected. The results showed that after nearly one year of seedling nursery, the seedling survival rate, seedling height, ground diameter and leaf area of lightweight substrates C₁[50% organic fertilizer(fermented by 30% seed cake of C. oleifera)+10% perlite +25% coir pith+15% pine needles] were the highest, which were higher than those of CK. The top three in terms of biomass were C₁, C₂[40% organic fertilizer (fermented by 30% seed cake of C. oleifera)+10% perlite+20% coir pith+10% pine needles +20% peat] and D₁[50% organic fertilizer (fermented by 50% seed cake of C. oleifera)+10% perlite+25% coir pith+15% pine needles]. The material accumulation of C₁ was higher than that of the CK. The root morphology indexes of C. oleifera seedlings showed that the total root length and the total root surface area of C₁ were the largest, and these two indexes of C₂ and D₁ were slightly lower than C₁. These three light substrate treatments showed no significant difference in the total root length and the total root surface area compared to CK. The root density of D₁ was the highest, followed by C₁. The root density of all treatments was lower than that of CK. The comprehensive score of the growth index of C. oleifera seedlings cultivated by C₁ was the highest, which was better than that of control and other lightweight substrates. It could be seen that the processing residues of C. oleifera could be used as the main material for the preparation of lightweight substrates after mixed fermentation according to a certain proportion.

The removal effects of combination of Bacillus and Vallisneria denseserrulata on nitrogen and phosphorus in water

CHEN Xuan, MENG Jian-jun, SUN Cong, WANG Jian, DENG Ping, DAI Yu-tai, HAN Xiao-fang, GUO Biao-hui

2025, 64(4): 84-89. doi:10.14088/j.cnki.issn0439-8114.2025.04.015

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A microbial and aquatic plant combined system was constructed using Bacillus and Vallisneria denseserrulata to investigate its effects on nitrogen and phosphorus removal in water and growth changes of plants. The results showed that the total nitrogen (TN) removal rate of the combined group of Bacillus compound bacteria and V. denseserrulata could reach 79.29%, which was higher than that of the individual application of V. denseserrulata and Bacillus compound bacteria. However, the removal efficiency of Bacillus compound bacteria on phosphorus was 33.58%, which was lower than that in the individual application group of V. denseserrulata (75.62%) and the combined group (65.31%). On the whole, the combined use of Bacillus and V. denseserrulata had a good effect on denitrification of water bodies and was beneficial to the growth of aquatic plants, but the individual application of Bacillus had a poor effect on phosphorus removal in eutrophic water bodies.

The promoting effect of the rhizosphere potassium-solubilizing bacterium TK35 on growth, potassium uptake and yield and quality of tobacco leaves

QIU Yan-ping, CAI Ke, HUO Guang, TIAN Xin-teng, MA Jun-feng, ZHANG Zi-hao, ZHANG Jia-xuan, KUANG Xue-ling, HU Jia-li, ZHENG Yu-xin, WANG Yi-wei, CAO Yuan-yuan

2025, 64(4): 90-94. doi:10.14088/j.cnki.issn0439-8114.2025.04.016

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A tobacco-affinity potassium-solubilizing bacterial strain TK35, obtained from tobacco rhizosphere in the early research, was applied to estimate its effects on growth, potassium uptake, yield and quality of tobacco leaves through pot and field experiments. The results of the pot experiment showed that, compared with the control without bacteria application, the fresh weight, dry weight, potassium content of leaves and available potassium content in the rhizosphere soil of tobacco plants treated with TK35 bacterial liquid increased by 13.89%, 11.97%, 11.46% and 4.92%, respectively. The results of the field experiment showed that the application of TK35 and 80% potash fertilizer treatment had the best effects. Compared with the treatment without bacterial solution and applying total fertilizer (CK2), the potassium content of middle leaves and upper leaves under this treatment increased by 14.64% and 35.97%, and the proportion of middle tobacco leaves, the proportion of superior tobacco leaves, yield and output value under this treatment increased by 8.33%, 3.20%, 3.83% and 5.35%, respectively. Potassium-solubilizing bacterium TK35 could increase the available potassium content of tobacco rhizosphere soil, improve the potassium content of tobacco leaves, promote the growth of tobacco plants, effectively enhance the yield and quality of tobacco leaves, and increase the economic value of tobacco. Strain TK35 had the potential for development and application.

The change of ecosystem service value in riparian zone of the Tang River from 1987 to 2021

SHAN Yuan-lei, GUO Hong, YANG Wen-yu, NING Li-bo, DU Jia-hao

2025, 64(4): 95-99. doi:10.14088/j.cnki.issn0439-8114.2025.04.017

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The riparian zone range of the Tang River was delineated by remote sensing interpretation and field investigation, and the changes in the ecosystem service value of the riparian zone from 1987 to 2021 were evaluated by the equivalent factor method. The results showed that from 1987 to 2021, the total ecosystem services value of the riparian zone in the upper reaches of the Tang River increased by 6.854 2 million yuan. The value change was caused by the decrease of construction land area and the increase of forest and grass area. The landscape pattern developed in the direction of higher ecological benefits. The total ecosystem services value of the riparian zone in the middle reaches of the Tang River increased by 115.079 4 million yuan from 1987 to 2021, but there was a trend of decrease in the service value from 2011 to 2021. The increase in the early stage was related to the increase in the area of wetland water storage and the recovery of vegetation area, which led to the improvement of the service value of water and forest land. The total ecosystem services value of the riparian zone in the lower reaches of the Tang River showed a trend of increasing first and then decreasing, but the overall trend was rising, with an increase of 15.6059 million yuan. The reason was that the gradual increase in the area of forest from 1987 to 2011 led to an increase in the ecosystem services value, while the decrease in the area of forest and water body from 2011 to 2021 led to a decrease in the ecosystem services value.

Temporal and spatial variation characteristics of landscape ecological pattern in Jiaxing City from 1989 to 2037 based on Markov prediction model

MI Yuan-bo, XU Dong, FANG He

2025, 64(4): 100-107. doi:10.14088/j.cnki.issn0439-8114.2025.04.018

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Using the Landsat image data of Jiaxing City from 1989 to 2019, the temporal and spatial dynamic changes of land use in Jiaxing City were analyzed, and the future land use pattern of Jiaxing City was predicted based on the Markov prediction model. Combined with the analysis of urban expansion, the relationship between urban expansion and land use change was explored. The results showed that, from 1989 to 2019, the types of land use in Jiaxing City had changed greatly, the construction land had increased significantly, the rate of urbanization had accelerated, and the probability of cultivated land being converted into forest land and grassland had increased, indicating that the policy of “returning farmland to forest” in Jiaxing City achieved certain results. During the study period, the land use degree of Jiaxing City was relatively large, and the land use was still in the development period. It was expected that the growth rate of urban construction land would still be large by 2037, but the land use structure would be stable. From 1989 to 2019, the urban expansion of Jiaxing City had experienced two stages of medium-speed expansion and rapid expansion. The urban fractal dimension was maintained at about 1.35, and the overall morphological structure was relatively complex, which had a great impact on the land use structure. The city center of Jiaxing had moved to the southeast, northwest and northeast in three periods of 1989 to 2002, 2002 to 2010 and 2010 to 2019, respectively. The urban circularity and compactness were stable, and a stable urban distribution structure of “one main district and six subs districts, three zones and three belts” was gradually formed.

Effects of feeding on submerged plants on the growth and development of an invasive species, the apple snail (Pomacea canaliculate)

ZHANG Ting-jia, WANG Zai-ling, RUI Jian-teng, LI Chuan-ren

2025, 64(4): 108-113. doi:10.14088/j.cnki.issn0439-8114.2025.04.019

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Six submerged plant species Myriophyllum tetrandrum, Elodea nuttallii, Vallisneria natans, Hydrilla verticillata, Potamogeton wrightii, and Myriophyllum spicatum were used as food sources for Pomacea canaliculata. Physiological indices such as growth, development, mortality, and egg production were assessed after feeding on different host plants. The adaptability of small, medium, and large Pomacea canaliculata snails to these six host plants was also evaluated. The results indicated significant differences in the growth and development of Pomacea canaliculata of different sizes depending on different host plants, but no significant effect was observed on survival rates. Among the snails, those of the small size class showed the best growth performance when feeding on Elodea nuttallii and Hydrilla verticillata, with the body weight increasing significantly by 45.67 times and 31.25 times, respectively. The growth performance was the poorest for snails feeding on Myriophyllum tetrandrum, with the body weight increasing by only 6.67 times. For medium-sized snails, better growth performance was observed when feeding on Potamogeton wrightii, Elodea nuttallii, and Hydrilla verticillata, with the body weight increasing significantly by 2.93, 2.15 and 2.08 times, respectively. The worst growth was seen in snails fed on Myriophyllum tetrandrum, with body weight increasing by just 8%. Large snails fed on Elodea nuttallii and Potamogeton wrightii exhibited the best growth, with the body weight increasing by 18% and 13%, respectively. Additionally, the number of egg masses produced was highest, at 11.33 and 14.67, respectively; the growth was poorest in large snails fed on Myriophyllum tetrandrum, with body weight decreasing by 1%, and the number of egg masses was the lowest at just 1.00.

Diversity of endophytic fungi in Fraxinus hupehensis

ZHANG Jian-kun, XIONG Yan-fei, CHEN Bi-feng, WANG Zhen-hua

2025, 64(4): 114-117. doi:10.14088/j.cnki.issn0439-8114.2025.04.020

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Seven new leaf samples of Fraxinus hupehensis were collected in Jingshan City, Hubei Province. The diversity of endophytic fungi was identified via isolation and culture on 4 media and sequencing of ITS sequences, and the similarities and differences of endophytic fungal communities between Fraxinus hupehensis and other forest plants were compared. The results showed that 454 fungal strains were isolated and identified, which belonged to 2 phyla, 5 classes and 29 genera. Isolation frequency analysis found that Diaporthe, Nigrospora, Colletotrichum and Alternaria were four genera with the higher isolation frequency, reaching 30.40%, 12.78%, 10.79% and 10.79%, respectively. The endophytic fungi isolated from a single leaf sample could be classified into 8~16 genera, and the dominant endophytic fungi and their isolation frequency were similar among different samples. The comparison of endophytic fungal communities showed that the agricultural and woodland environments of the sample trees were more likely to affect endophytic fungal communities than tree age. The total number of endophytic fungi genera from new leaf samples of Fraxinus hupehensis was relatively higher than that of other forest plants studied, which initially showed a higher diversity of endophytic fungi from Fraxinus hupehensis.

Effects of different soil conditions on the quality and yield of blueberry fruits

QIN Hong-bo, GUO Lun-fa, ZHANG Yi-bin, PAN Yan-lin, WANG Xin-gui

2025, 64(4): 118-121. doi:10.14088/j.cnki.issn0439-8114.2025.04.021

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The 3-year-old southern highbush blueberry cultivar Emerald was taken as the research object. Three factors of soil pH, application amount of organic fertilizer and application amount of perlite were set up through the orthogonal test to explore the effects of different soil conditions on blueberry fruit quality and yield. The results showed that different soil conditions had significant effects on fruit quality and yield of the blueberry. Among them, under the conditions of soil pH 4.2 and a mass ratio of garden soil∶organic fertilizer∶perlite=33.6∶4∶1, the average number of fruits per plant was 127.00, the average fruit weight was 2.31 g, the average fruit diameter was 1.69 cm, and the average yield per plant was 293.03 g. The number of fruits and the yield per plant were significantly higher than other treatments. The soluble sugar content of blueberry fruit was the highest under the conditions of soil pH 5.8 and a mass ratio of garden soil∶organic fertilizer∶perlite=31.7∶6∶1; the anthocyanin content of blueberry fruit was the highest under the conditions of soil pH 5.0 and a mass ratio of garden soil∶organic fertilizer∶perlite=63.3∶12∶1; all the indexes of blank control were at the lowest value.

The correlation between plant species diversity and growth in lawn ecosystems

LI Mao-ying, HU Xian-jin, DING Jian, LIU Xian-bin, MA Si-yuan, HE Yin-jian

2025, 64(4): 122-129. doi:10.14088/j.cnki.issn0439-8114.2025.04.022

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To study the correlation between the structure and function of lawn ecosystems at different development and succession stages, bermuda grass [Cynodon dactylon (L.) Persoon], creeping bentgrass (Agrostis stolonifera L.), perennial ryegrass (Lolium perenne L.), buffalograss [Buchloe dactyloides (Nutt.) Engelm.], tall fescue (Festuca elata Keng ex E. B. Alexeev) and white clover (Trifolium repens L.) were used as the research objects, two experimental treatments of “maintaining natural state (MNS)” and “manually removing weeds (MRW)” were established, and the changes in plant species diversity and growth at different development and succession stages were investigated. The results showed that the correlation between plant species diversity and growth in lawn ecosystems varied in different development and succession stages and different experimental treatments: At the initial stage, a linear positive correlation occurred between the two variables in six types of lawn ecosystems and two experimental treatments; at the intermediate stage, a single-hump correlation appeared between the two variables in the experimental treatment of MNS, while no obvious correlation was found in the experimental treatment of MRW; at the late stage, a single-hump correlation arose between the two variables in all the experimental treatments of MNS, a linear negative correlation emerged in 50% of the MRW experimental treatments, and no obvious correlation was found in the remaining 50%.

Stability characteristics of different artificial forest communities in rocky desertification areas of northwest Hubei

YANG Jia-wei, DAI Xue, LAN Zhu, TANG Zhi-qiang, LIU Xue-quan, WANG Xiao-rong, FU Tian, YANG An

2025, 64(4): 130-136. doi:10.14088/j.cnki.issn0439-8114.2025.04.023

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Taking the artificial forest ecosystem in the rocky desertification area of northwest Hubei as the research object, the stability characteristics of different artificial forest communities were analyzed to provide support for the selection of tree species and management techniques for ecological restoration of rocky desertification in Danjiangkou reservoir area. Three main types of artificial forests were selected in the rocky desertification area of northwestern Hubei, and the membership function method in fuzzy mathematics was applied to comprehensively evaluate community stability from aspects such as vegetation structure, species diversity, renewal potential, forest productivity, and soil fertility. The results showed that, the species richness of artificial forests in rocky desertification areas was generally low, with 7~16 species of woody plants and 4~7 species of herbaceous plants. The population renewal potential of Quercus variabilis artificial young forest was 36.98%, and the population renewal potential of Pinus massoniana near mature forest was 28.79%, significantly higher than other land types. The mean annual biomass of the tree layer in the young Quercus variabilis forest was the highest, significantly exceeding that in the middle-aged Quercus variabilis forest and the nearly mature Pinus massoniana forest by 41.09% and 71.67%, respectively. The soil fertility was mainly manifested as Pinus massoniana near mature forest and Quercus variabilis middle-aged forest>Quercus variabilis young forest>Platycladus orientalis>secondary shrub forest. The stability of the communities in the middle-aged Quercus variabilis forest and the near mature Pinus massoniana forest was higher than that in the young Quercus variabilis forest and significantly higher than that in the artificial Platycladus orientalis forest. There was no significant difference in the stability of the communities between the middle-aged Quercus variabilis forest and the near mature Pinus massoniana forest.

Landscape gene evaluation and application of Pingyao Ancient City based on AHP-FCE model

JIA Shan-shan, FU Yin-yin, LI Jiao-rui, YAN Xiao-hua

2025, 64(4): 137-144. doi:10.14088/j.cnki.issn0439-8114.2025.04.024

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Taking the landscape system of Pingyao Ancient City in Shanxi Province as the research object, the landscape genes of Pingyao Ancient City were identified and extracted from the four aspects of environment, layout, architecture and culture with the help of landscape gene theory, and were quantitatively sequenced by AHP(Analytic Hierarchy Process)-FCE(fuzzy comprehensive evaluation method) to construct the landscape gene sequencing index system of Pingyao Ancient City and make clear the application of landscape factors in the enhancement of ancient city landscape style. The results showed that the comprehensive evaluation score of Pingyao Ancient city was 3.374 1 points, and the overall landscape genes’ evaluation was good. The comprehensive scores of the criterion layer, from high to low, were layout gene, architectural gene, environmental gene and cultural gene, indicating that the layout gene and architectural gene of the ancient city were good, while the environmental gene and cultural gene needed to be improved. The analysis index layer showed that six landscape genes, namely water system environment, green landscape, religious belief, local culture, traditional skills and folk art, could be effectively used in the landscape enhancement of Pingyao Ancient City.

Multi-component analysis of Smilax china syrup based on HPLC fingerprint

ZHU Rong-ping, WU Jiang, YANG Jian-qing, TIAN Li-wen, XU Yi, FANG En

2025, 64(4): 145-152. doi:10.14088/j.cnki.issn0439-8114.2025.04.025

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Fifteen batches of Smilax china syrup were used as experimental materials. The chromatographic separation was performed on a Capcell Pak C18 column (4.6 mm × 250 mm, 5.0 μm) with a mobile phase of acetonitrile-0.1% phosphoric acid aqueous solution under gradient elution. The flow rate was 1.0 mL/min, the column temperature was 35 ℃, and the detection wavelength was 303 nm. The HPLC fingerprints of 15 batches of Smilax china syrup were established using the traditional Chinese medicine chromatographic fingerprint similarity evaluation system (2012 version), and 23 common peaks were identified. By comparing UV absorption spectra, reference fingerprints, and retention times of reference standards, eight chemical components were identified:neochlorogenic acid, chlorogenic acid, cryptochlorogenic acid, polydatin, astilbin, oxyresveratrol, quercitrin, and resveratrol.The similarity of chemical components in the 15 batches of Smilax china syrup was greater than 0.900, indicating high homogeneity and stability in chemical composition among different batches. The fingerprint characteristics were effectively and accurately reflected in the chromatograms.Principal component analysis (PCA), orthogonal partial least squares-discriminant analysis (OPLS-DA), and cluster analysis showed that the 15 batches of Smilax china syrup were clearly divided into two categories, which may be related to the raw materials of Smilax china from different origins. The content of the eight chemical components varied among the 15 batches, which may be related to factors such as climate, soil and water environment, and plant growth duration in different geographical locations.

Quality analysis and potential risk assessment of urban food waste composting

LAI Jin-li, WANG Xiao-yan, ZHANG Xu, LI Jian-ying, REN Xiao-ling

2025, 64(4): 153-157. doi:10.14088/j.cnki.issn0439-8114.2025.04.026

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To comprehensively evaluate the quality and potential risks of urban food waste composting, four food waste treatment sites were selected, and four treatment processes were implemented: high-temperature aerobic composting, dynamic aerobic composting, rapid composting, and on-site composting. The results showed that the incoming food waste at the four treatment sites was rich in organic matter and nutrients, with low risk of heavy metal pollution, indicating high potential for resource utilization. The organic matter content and total nutrient content of the composting products from the four treatments met the limits specified in the NY/T 525—2021 standard. Through biodegradation and other treatment technologies, the food waste was converted into fertilizer rich in organic matter and various nutrients.As, Hg, Pb, Cd, and Cr were detected in samples from all four treatments. The single-factor pollution index of heavy metals in samples from high-temperature aerobic composting, dynamic aerobic composting, rapid composting, and on-site composting was less than 1.0, indicating a clean level. The Nemerow comprehensive pollution indices of the samples were 0.27, 0.25, 0.23, and 0.19, respectively, all below 0.7, indicating a safe level. The potential ecological risk indices of the samples were 18.57, 17.51, 11.76, and 14.16, respectively, all below 150, indicating a low potential ecological risk. The evaluation results could more accurately assess the quality of composting products and effectively prevent environmental pollution.

Optimization of subcritical extraction process and antioxidant activity of essential oil from Chaenomeles sinensis (Thouin) Koehne peel

YU Wang-tang, XU Ming-yue, TANG Pei-xin

2025, 64(4): 158-163. doi:10.14088/j.cnki.issn0439-8114.2025.04.027

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To improve the yield of essential oil and optimize the subcritical extraction process of Chaenomeles sinensis (Thouin) Koehne peel, on the basis of single factor experiments, the subcritical extraction process conditions of Chaenomeles Sinensis (Thouin) Koehne peel essential oil were optimized by response surface experiments, and the inhibition rate of DPPH·and ABTS free radicals of Chaenomeles Sinensis (Thouin) Koehne peel essential oil were studied. The results showed that the optimum extraction conditions were as follows: extraction temperature 30 ℃, extraction time 27 min and extraction 3 times. Under this condition, the yield of essential oil was 4.16%. The IC₅₀ values of essential oil on DPPH·and ABTS free radicals were 73.5 mg/L and 93.5 mg/L respectively.

The influence of environmental temperature and humidity on the inlet moisture content of cut tobacco and its predictive control

LI Li-zhi, SHEN Li-dong, ZHAO Wei, XU Rong-zhao, MA Jun, DONG Xing-shen

2025, 64(4): 164-170. doi:10.14088/j.cnki.issn0439-8114.2025.04.028

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Aiming at the problems of large parameter fluctuation, untimely control and high energy consumption of the drying machine, combined with the tobacco production process, the influencing factors of moisture content at the entrance of the drying machine were analyzed, and the variation laws of temperature and humidity in the external environment and the production workshop were studied. The experimental study of moisture content of cut tobacco was carried out under different temperatures and humidity conditions, and the influence laws of temperature and humidity changes in the process environment on the moisture content of cut tobacco were revealed. Based on the prediction model of multi-source environmental temperature and humidity data fusion and BP neural network, a dynamic prediction mathematical model of moisture content of the tobacco drying process was established. Through the training and optimization in production practice, the real-time prediction of inlet moisture content of the tobacco drying process was realized. The results showed that the change of ambient temperature and humidity was an important factor affecting the moisture content of cut tobacco, and the influence was the largest when the ambient temperature was higher than 20 ℃ and the ambient humidity was higher than 50%. The model could accurately predict the inlet moisture content of the tobacco drying process in real time, and the maximum error was controlled within ±1.5%. The maximum values of MAE and RMSE were 0.80% and 0.917 1%, respectively. The predicted values met the requirements of production practice, which had important guiding significance to ensure the stability of product quality and the accurate control of process.

Effect of high glucose induction on eicosanoid metabolism in 293T Cells

CAO Yang, BAI Cong-ying, WANG Wen-qian, LI Hao, DU Jia-xin, ZHENG Bai-cheng, LI Jie, WEI Li-sha

2025, 64(4): 171-175. doi:10.14088/j.cnki.issn0439-8114.2025.04.029

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293T cells were induced with high glucose (50 mmol/L). The cell proliferation from days 1 to 4 was detected using a CCK-8 kit, and the mRNA expression levels of eicosanoid metabolism-related genes and inflammation-related genes were analyzed by real-time fluorescent quantitative PCR. The results showed that, compared with normal glucose (25 mmol/L), the mRNA expression levels of eicosanoid metabolism-related genes in 293T cells did not change significantly after high glucose stimulation. Only the COX1 gene exhibited transient downregulation at the 5th passage, which subsequently returned to normal levels. High glucose stimulation also significantly increased the mRNA level of the inflammatory factor IL-1β in 293T cells at the 11th passage, suggesting that long-term high glucose stimulation might induce mild inflammatory responses in 293T cells.

Soil health and new-quality agricultural productive forces: Theoretical connotation, logical relationship and implementation pathways

HUANG Ma-lan, LIU Cai-bo, ZHANG Xue-nan, ZHANG Jin-xin, WANG Hong-ling

2025, 64(4): 176-183. doi:10.14088/j.cnki.issn0439-8114.2025.04.030

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Using the qualitative analysis method, the theoretical connotation, logical relationship, and synergistic advancement strategies for soil health and new-quality agricultural productive forces were deeply analyzed. The results showed that soil health was the basis of the new-quality agricultural productive forces, and the development of the new-quality agricultural productive forces could promote the improvement of soil health. Both complemented each other. Soil health supported the development of the new-quality agricultural productive forces through its ecosystem services, including provisioning, regulation, support, and cultural functions. Simultaneously, the new-quality agricultural productive forces fostered opportunities for soil health improvement via pathways such as technological innovation, green and low-carbon practices, enhanced agricultural productivity, as well as optimized allocation of agricultural factors. In order to jointly promote soil health and the new-quality agricultural productive forces, suggestions were put forward, such as strengthening top-level design, enhancing policy and institutional safeguards, paying attention to technological innovation and application, implementing climate-smart agriculture, consolidating intellectual support, and building high-level agricultural talent team.

The impact of heterogeneous environmental decentralization and environmental regulation on ecological welfare performance:Analysis based on bidirectional fixed effect model

ZHENG Ran, LI Li, WANG Zhi-qiang, ZHANG Meng-meng

2025, 64(4): 184-191. doi:10.14088/j.cnki.issn0439-8114.2025.04.031

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The ecological welfare performance (EWP) of China’s provinces from 2010 to 2021 was measured, and the impacts of environmental decentralization and environmental regulation on EWP were empirically examined by employing a two-way fixed effects model. Furthermore, heterogeneity analyses were conducted based on regional differences and varying degrees of environmental decentralization. The results showed that China’s ecological welfare performance exhibited a gentle inverted “U” shape over the study period, with an overall declining trend. The regions were ranked as east > middle > west by performance level. Environmental decentralization had a significant incentive effect on ecological welfare performance. Environmental regulation had a direct effect on the improvement of ecological welfare performance, and their interaction also promoted the improvement of ecological welfare performance. In the regional tests, the impacts of environmental decentralization on the performance of the eastern, central, and western regions were significantly positive, significantly negative, and negatively insignificant respectively; regions with high decentralization and regions with low decentralization promoted and inhibited the improvement of ecological welfare performance respectively, and the negative impact of regions with low decentralization was greater than that of regions with high decentralization. Based on the research results, the following suggestions were put forward: Establish a rational division of fiscal and administrative powers; appropriately adjust the intensity of environmental regulation, coordinate environmental tax rates across provinces according to local conditions; improve the performance evaluation system to prevent local governments from turning a “helping hand” into a “grabbing hand” that harmed people’s well-being.

The evolution of spatial layout of agricultural product logistics resources and identification of driving factors: An empirical analysis based on enterprise data in Shaanxi Province

LEI Xiao-qing, LIU Jun-xia, CHEN Wan-ting

2025, 64(4): 192-201. doi:10.14088/j.cnki.issn0439-8114.2025.04.032

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Using average nearest neighbor analysis, kernel density analysis and standard deviation ellipse research methods,the spatial layout evolution of agricultural products logistics enterprises in Shaanxi Province was analyzed based on micro-geographic data.Both overall and regional analyses were conducted, with the geographic detector used to identify its driving factors, and ordinary least squares regression applied to examine their driving effects. The results showed that, after 2015, the agglomeration trend of agricultural product logistics enterprises in Shaanxi Province had strengthened. The agglomeration areas had evolved from a single-core scattered pattern to a strip-shaped spot and then to a multi-core strip-shaped pattern, with a general trend extending from the southwest to the northeast; in the Guanzhong Region, the enterprise distribution exhibited a central leadership and dual-core linkage; in the southern Shaanxi region, the urban area of Ankang City and surrounding areas (Lan’gao County, Hanyin County) along with Shangzhou District of Shangluo City and Hantai District of Hanzhong City formed a “three-core dominant” spatial pattern; in the northern Shaanxi region, a “two-core multiple spots” distribution was observed; the evolution of the spatial layout of agricultural product logistics enterprises in Shaanxi Province was significantly driven by the level of logistics industry development, urbanization, and regional consumption. Therefore, recommendations for optimizing the spatial layout of agricultural product logistics enterprises in Shaanxi Province were proposed: Cross-regional coordination and scientific planning to enhance the logistics industry levels in southern and northern Shaanxi, establishing a scientific and reasonable spatial optimization mechanism to improve the circulation of agricultural logistics resources, and encouraging technological innovation and upgrading of agricultural product logistics enterprises.

The pathways for enhancing agricultural ecological efficiency through the digital innovation ecosystem from the perspective of configuration

LI Shu-ying, ZHANG Zi-he, ZHANG Li-yin, ZHANG Li-na

2025, 64(4): 202-210. doi:10.14088/j.cnki.issn0439-8114.2025.04.033

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The dynamic SBM-DEA model considering undesired outputs was constructed to measure the agricultural ecological efficiency at provincial level in China from 2013 to 2022. On this basis, the dynamic fuzzy-set qualitative comparative analysis method was used to investigate the multi-factor linkage effects of the digital innovation environment, digital innovation subjects and digital innovation resources in the digital innovation ecosystem on improving agricultural ecological efficiency, and to explore the pluralistic paths to improve agricultural ecological efficiency in China. The results showed that the agricultural ecological efficiency in China showed an overall increasing trend from 2013 to 2022, with significant differences among regions. The order of the agricultural ecological efficiency in China from high to low was the eastern region, the central region and the western region. Four development models that led to high agricultural ecological efficiency were identified, which were policy capital driven type, digital technology driven type, full factor driven type, and industrial integration driven type. Although the four development models did not have obvious temporal effects, they had significant regional effects. Provinces did not follow a consistent configuration path in achieving high agricultural ecological efficiency. Each region should choose the right development path and adopt differentiated strategies to promote the improvement of regional agricultural ecological efficiency with the development of the digital innovation ecosystem.

Level measurement, regional differences and influencing factors of urban-rural integration in Hubei Province

QIN Xin, TU Wei-liang

2025, 64(4): 211-217. doi:10.14088/j.cnki.issn0439-8114.2025.04.034

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An index system was constructed based on five dimensions of "economy, population, society, space and ecology", the entropy method was used to measure the level of urban-rural integration and development in Hubei Province, and the Dagum Gini coefficient method was used to analyze regional differences. The results showed that: From 2010 to 2021, the development level of urban-rural integration in Hubei Province showed an overall upward trend, with the best development of spatial integration and rapid development of ecological integration and population integration. In Hubei Province, the regional differences of urban-rural integration development showed a downward trend, but there were still obvious differentiation characteristics. The regional differences within Yichang, Jingzhou, Jingmen, and Enshi, as well as within Xiangyang, Shiyan, and Suizhou gradually narrowed, while the differences in Wuhan, Ezhou, Huanggang, and Huangshi showed an expanding trend. The analysis of influencing factors of urban-rural integration in Hubei Province by using the geographical detector model showed that social economy, public service and financial support could promote urban-rural integration in Hubei Province to a certain extent, and the influence of natural factors could not be ignored. It put forward countermeasures and suggestions such as strengthening the driving role of leading factors of urban-rural integration development, paying attention to regional differences and differentiation of urban-rural integration development, and continuously promoting the construction of "strong county project".

Thoughts and suggestions on the construction of a classified evaluation system for agricultural scientific and technological talents： Taking Hubei Academy of Agricultural Sciences as an example

ZHENG Cheng, FU You-zhi, LIU Lan-yu, SHENG Min, DONG Jian-hui, CHEN Deng-song

2025, 64(4): 218-221. doi:10.14088/j.cnki.issn0439-8114.2025.04.035

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To promote the reform of scientific and technological talent evaluation at Hubei Academy of Agricultural Sciences, the current status of talent evaluation was analyzed through research. Issues in the evaluation of agricultural scientific and technological talents were examined from perspectives such as the number of personnel in research teams, structural hierarchy, and functional division of labor.A series of suggestions were proposed regarding classification standards, indicator settings, and evaluation methods to establish a scientific and reasonable classified evaluation system for scientific and technological talents, and to improve and innovate the classified evaluation methods for agricultural scientific and technological talents.

Countermeasures for village development based on the coordination of the production-living-ecology space functions： Taking Shawan City as an example

WANG Xiang-yi, CHEN Qian-li, LIU Run-xiang, Abdureheman Abudikeranmu, HUANG Hu-wei

2025, 64(4): 222-230. doi:10.14088/j.cnki.issn0439-8114.2025.04.036

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Selecting villages and towns with different location conditions in the north, middle and south of Shawan City, Xinjiang, and using the analytic hierarchy process and coupling coordination degree model, the three functions of production, life and ecology of the administrative villages in the three villages and towns were evaluated, and the coordination of their “production-living-ecology” functions was analyzed. The results showed that most of the villages were in low coupling, and a few were in mild coupling. According to the “production-living-ecology” function values and coupling coordination degree, the villages were divided into five types: Production-living function dominant area, living-ecology function dominant area, production-ecology function dominant area, production-living-ecology function integration development area, and production-living-ecology function integration poor area. The development direction and suggestions were put forward respectively.

The impact of digital finance on the agricultural economic resilience under the background of rural revitalization

LU Ying-jin, LI Hui-ling

2025, 64(4): 231-236. doi:10.14088/j.cnki.issn0439-8114.2025.04.037

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Based on inter provincial panel data from China from 2012 to 2021, an in-depth analysis of the impact of digital finance on the agricultural economic resilience and its spatial spillover effects was conducted. The results indicated that digital finance had a significant promoting effect on the enhancement of agricultural economic resilience. In addition, the improvement of the level of economic development and financial support for agriculture as well as the optimization of the industrial structure were all conducive to enhancing the resilience of the agricultural economy. The impact of digital finance on the agricultural economic resilience had a positive spatial spillover effect, but its effect on improving the agricultural economic resilience in this region was more prominent. Agricultural science and technology innovation had played a partial mediating role in the impact of digital finance on agricultural economic resilience, that was, digital finance could enhance agricultural economic resilience by improving the level of agricultural science and technology innovation.

The dynamic relationship between urban and rural construction land transformation and rural transformation：Taking Taigu District in Shanxi Province as an example

YAO Xiao-gang, CHEN Xiao, QIN Ming-xing, KANG Qing

2025, 64(4): 237-246. doi:10.14088/j.cnki.issn0439-8114.2025.04.038

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Taking Taigu District in Shanxi Province as a research case, an indicator system for evaluating the development level of urban-rural construction land transformation and rural transformation was constructed based on its topography, which was divided into plain area and mountainous area, in order to reveal the spatial and temporal characteristics of urban-rural construction land transformation and rural transformation in Taigu District, and to validate the dynamic relationship between the two in the long term by using the VAR model. The results showed that the comprehensive index of urban and rural construction land transformation and the rural transformation index in the study area showed an upward trend in time and a spatial distribution of high in the west and low in the east. The overall level of urban-rural construction land transformation and rural transformation in the plain region was better than that in the mountainous area. The study area had a long-term equilibrium between urban and rural construction land transformation and rural transformation, and there was a unidirectional causal relationship between urban and rural construction land transformation and rural transformation in the whole of Taigu District and plain area, with rural transformation being the Granger cause of urban and rural construction land transformation, and urban and rural construction land transformation and rural transformation in the mountainous area being the Granger cause of each other. The transformation of urban and rural construction land was affected by its own structural shocks as well as by the transformation of the countryside, and the intensity of the impact of the transformation of the countryside on the transformation of urban and rural construction land was increasing, while the transformation of the countryside was relatively less affected by the transformation of urban and rural construction land and more affected by its own structural shocks. It was recommended that the government should adopt differentiated control strategies for urban and rural construction land expansion in different regions, and promote the coordinated development of urban and rural land transformation and rural transformation in an orderly manner.

The county village classification method based on the "POI-Potential-Gravity" model: A case study of Aheqi County, Xinjiang

HUANG Jin-liang, WANG Zhi-qiang

2025, 64(4): 247-256. doi:10.14088/j.cnki.issn0439-8114.2025.04.039

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The development potential of each village was estimated by using multi-source data, and the village type classification system was constructed by combining POI (points of interest) nuclear density analysis and gravity model, and an empirical analysis was carried out in Aheqi County, Xinjiang. The results showed that the development potential of villages in Aheqi County was insufficient as a whole, and there were problems of insufficient and unbalanced development, showing a spatial pattern of strong in the central and eastern regions and weak in the west. Villages in Aheqi County could be divided into five types: Characteristic protection, suburban integration, cluster enhancement, scale control, relocation and withdrawal, accounting for 12%, 16%, 36%, 24% and 12% respectively. Finally, according to the actual situation of Aheqi County, the detailed suggestions for the revitalization of all types of villages were put forward.

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