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Forest and Grassland Resources Research ›› 2025›› Issue (3): 9-18.doi: 10.13466/j.cnki.lczyyj.2025.03.002

• Research paper • Previous Articles     Next Articles

Analysis of ecological environment change and driving factors of enclosure-conservation area for desertified land in Ningxia

GUO Liming1(), LIU Baojun2, TIAN Naling1, LI Qingbo1, LI Wanying2   

  1. 1. Ningxia Forestry Investigation and Planning Institute,Yinchuan 750001,China
    2. Northwest Survey and Planning Institute,National Forestry and Grassland Administration,Xi'an710048,China
  • Received:2024-12-25 Revised:2025-03-25 Online:2025-06-28 Published:2026-01-07

Abstract:

Enclosure protection of desertified landis a management measure for desertified land,which curbs the process of desertification by restricting or prohibiting human activities.We used satellite remote sensing monitoring,aerial drone monitoring,ground sample survey and other means to monitor the ecological environment change of four national enclosure-conservation areas in Ningxia,and comprehensively evaluated the impact of closed protection on vegetation restoration and sandy land improvement through environmental factors analysis and land-use change analysis.The results show that:1)The average maximum NDVI value of the four enclosure-conservation areas of Yanchi Mechanized Forest Farm,Baijitan Sand Prevention Forest Farm in Lingwu City,Suanzaoliang in Hongsibu District and Changliushui in Shapotou District showed a positive growth trend.Compared with 2013,the average maximum NDVI value of the four enclosure-conservation areas in 2023 increased by 18.75%,29.16%,30.43% and 23.08%,respectively.2)From 2014 to 2023,in enclosure-conservation area,the degree of land desertification is reduced as a whole,and the area of mild and moderate desertified land is the largest.3)Total phosphorus,vegetation height,precipitation,sand cover thickness,desertification degree and organic matter are the key factors affecting the change of vegetation coverage.4)In each enclosure-conservation area,the influence of different types of environmental factors on vegetation coverage was ranked in descending order of sample factors,soil factors,meteorological factors,and topographic factors.In the future,desertified land management should be equipped with vegetation structures according to local conditions to achieve stable recovery and sustainable development of the ecosystem.

Key words: enclosure-conservation area for desertified land, normalized difference vegetation index, vegetation coverage impact factors, transferof desertified land

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