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Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Reference Manager ProCite BibTeX RefWorks Toggle Thumbnails Select Study on vegetation coverage distribution of different slope belts in Yanshi district WANG Guo-zhong, LI Zhong-yuan, CHENG Huan-ling, ZHANG Ji-yu, GAO Jing-qing, YANG Dan, LI Xiu-hong, LU Yuan-zhang HUBEI AGRICULTURAL SCIENCES    2022, 61 (5): 106-110.   DOI: 10.14088/j.cnki.issn0439-8114.2022.05.020 Abstract （349）      PDF （4059KB）（280）       Knowledge map    Save In order to explore the relationship between slope distribution and vegetation coverage, the information of slope and vegetation coverage in Yanshi district were extracted by Landsat 8 image and DEM, and their relationship were analyzed. The results showed that the slope of the district was gentle with good vegetation coverage,which was suitable for human habitation and life; The vegetation coverage distribution was greatly affected by slopes of 2°, 6°, 15° and 25°. When the slope was no more than 15°,the coverage between 10% to 30% accounted for the largest proportion of the total area, but in the slope zone from 2° to 6°, the coverage between 60% to 80% accounted for the largest proportion of the total area, and in the slope zone from 6° to 15°, the coverage above 80% accounted for the largest proportion;After the slope exceeded 15°, the coverage between 60% to 80% and beyond 80% occupied dominant position;After the slope exceeded 25°, above 80% coverage occupied dominant position exceeding the coverage from 60%to 80%;The coverage beyond 80%, from 60% to 80% showed same trend that first decreasing, then increasing and then gradually decreasing with slope increase, while coverage distributions from 45% to 60%, 30% to 45%, 10% to 30% and lower 10% gradually decreased with slope increase. There are remarkable results in ecological and clean small watershed construction for Yanshi district, and the vegetation coverage has increased greatly,the experience is worth popularizing and learning. Reference | Related Articles | Metrics Select Land ecological risk assessment of Lyuliang Mountain based on nature-economy-landscape multi-source system SONG Xiao-jing, ZHOU Shu-qin, WANG Yong, JING Yao-dong, LIU Li-wen, WANG Bei-bei HUBEI AGRICULTURAL SCIENCES    2022, 61 (5): 111-119.   DOI: 10.14088/j.cnki.issn0439-8114.2022.05.021 Abstract （348）      PDF （7387KB）（225）       Knowledge map    Save Ecological risk assessment is the basis of the study on the life security of mountain, water, forest, field, lake, grass and sand community. At present, unreasonable resource development and inefficient land use lead to vegetation degradation, weakening ecosystem service function and aggravating regional ecological risk. The protection and construction of life community are facing new challenges. Taking the land use dynamic monitoring data of Lyuliang Mountain in 2000, 2010 and 2018 as the data source, a multi-source evaluation system of nature-economy-landscape was constructed with the support of ArcGIS, Fragstats and R, based on 5 km×5 km grid calculated the temporal and spatial differentiation and correlation of regional vegetation degradation trend, ecosystem service value and ecological risk index since 19 years, evaluated the regional ecological risk and put forward protection suggestions. The results showed that the vegetation cover of Lyuliang Mountain increased as a whole, and the vegetation change was significant. The area of significant area accounted for 84.94%. From 2000 to 2010, the value of ecosystem services increased from 507.803×108 yuan to 507.874×108 yuan, with a small increase, down to 499.761×108 yuan from 2010 to 2018, a total decrease of 1.597%. Forest land, grassland and cultivated land were the main contribution types. The overall landscape ecological risk showed an upward trend. The risk index had a negative correlation with the value of ecosystem services, and the aggregation trend had increased. The purpose of the study is to provide reference for Lyuliang Mountain to better play the role of ecological barrier and improve the ability of risk early warning and management and control in the region. Reference | Related Articles | Metrics page Page 1 of 4 Total 7 records First page Prev page Next page Last page