Temporal and spatial variation of NDVI and its relationship with topographic factors in Liaoning Province

doi:10.14088/j.cnki.issn0439-8114.2023.03.028

Abstract

Abstract: Based on the monthly synthetic NDVI products of MODIS and the topographic data of Liaoning Province （including elevation, slope and aspect）, the temporal and spatial changes of NDVI and the correlation between NDVI and topographic factors in Liaoning Province from 2001 to 2020 were analyzed. The results showed that the vegetation situation in Liaoning Province had been slightly improved in the past 20 years. Spatially, the area of vegetation degradation was small and the area of improvement was large. Affected by the low altitude of Liaoning Province, the overall temperature in the study area would not decrease with the increase of altitude, so the elevation of Liaoning Province was directly proportional to the NDVI. The higher the altitude, the greater the NDVI. The NDVI increased first and then decreased with the increase of slope, and the NDVI was the largest on the steep slope. The relationship between slope direction and vegetation was weak, there was no obvious difference, and the north was slightly higher than the south.

Key words: NDVI, terrain factor, temporal and spatial variation, Liaoning Province

CLC Number:

Q948

HAI Yan, HE Meng-qi, SUN Yong-qi, ZHENG Shu-yuan, WANG Jian-xiong. Temporal and spatial variation of NDVI and its relationship with topographic factors in Liaoning Province[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(3): 182-186.

References

[1] 陈亮,王学雷,杨超,等.2000~2018年鄂西山区植被EVI时空变化特征及其地形效应[J].长江流域资源与环境,2021,30(2):419-426.
[2] 任立清. 艾比湖流域植被时空变化及驱动力分析[J].干旱区地理,2022,45(2):467-477.
[3] 李晶,刘乾龙,刘鹏宇.1998—2018年呼伦贝尔市植被覆盖度时空变化及驱动力分析[J].生态学报,2022,42(1):220-235.
[4] 徐丽,彭浩贤,潘萍,等.江西省兴国县植被覆盖度及其空间格局变化[J].浙江农林大学学报,2021,38(6):1117-1126.
[5] 庞家泰,段金亮,张瑞,等. 2000-2019年渭河流域植被覆盖度时空演变特征及气候响应[J].水土保持研究,2021,28(5):230-237.
[6] 聂桐,董国涛,蒋晓辉,等.延安地区植被覆盖度时空变化及驱动力[J].水土保持研究,2021,28(5):340-346.
[7] 曹俊涛,康雄,杨杰,等. 2010—2019年三亚市NDVI时空变化特征[J].农业工程,2020,10(9):62-65.
[8] 康雄,曹俊涛,陈成,等.不同趋势法的宁夏长时序植被变化分析[J].测绘通报,2020(11):23-27.
[9] 陈月庆,周诗恬,朱明,等.河南省植被覆盖变化与驱动因子的相关性分析[J].信阳师范学院学报(自然科学版),2021,34(3):401-407.
[10] 林楠. 基于RS和GIS的吉林东部植被覆盖变化和驱动力研究[D].长春:吉林大学,2010.
[11] 边琳,叶飞,刘珊珊,等.基于NDVI的昆明市2001—2015年植被覆盖变化趋势分析[J].山东农业科学,2018,50(1):107-110.
[12] 许婧,刘飞鹏,王建雄,等.基于MODIS NDVI的西双版纳植被覆盖变化趋势研究[J].西南林业大学学报(自然科学),2018,38(5):145-153.
[13] 覃巧婷,陈建军,杨艳萍,等.黄河源植被时空变化及其对地形和气候的响应[J].中国环境科学,2021,41(8):3832-3841.
[14] 吴志俊,王永强,鄢波,等.巴勒更河流域植被覆盖度时空变化及其与地形因子的关系[J].水电能源科学,2021,39(7):24-27,75.
[15] 王井利,马运涛.MODIS遥感数据的沈阳市植被变化规律[J].辽宁工程技术大学学报(自然科学版),2014,33(11):1484-1487.
[16] 李书君,武晋雯,孙龙彧.辽宁省水田MODIS植被指数序列构建[J].中国农学通报,2015,31(23):239-244.
[17] 蒋娇娇,李国春,姜鹏,等.近10年辽宁省春季植被覆盖变化的遥感监测研究[J].现代农业科技,2010(8):212-215.
[18] 武晋雯,纪瑞鹏,张玉书,等.辽宁省耕地植被指数变化特征分析[J].气象科学,2006,26(3):3279-3285.
[19] 张玉书,关德新,吉书琴.辽宁省NOAA/AVHRR作物植被指数与降雨量关系的初步分析[J].辽宁气象,1993(3):25-28.