安徽农业科学2025，Vol.53Issue(8)：35-41,46,8.DOI:10.3969/j.issn.0517-6611.2025.08.009
干旱生态脆弱区土地利用转化的土壤保持服务供需匹配研究
Research on Supply-Demand Matching of Soil Conservation Services for Land Use Conversion in Arid and Ecologically Fragile Areas
摘要
Abstract
Land use types are the spatial expression of the choice space for the adjustment and development of industrial structure,and also the spatial carrier for the transformation of ecosystems.Their transformation types not only affect the quality of industry but also determine the value function of ecological services.Their synergy is the foundation for the construction of a human-land community.In arid and ecologically fragile areas,there is a high pressure on soil erosion ecological protection under multiple sources of risk and variable disturbances.To achieve high-quality development and ecosystem quality and stability,it is crucial to solve the matching and risk problems of soil conservation service value functions.This article uses the InVEST model to study the soil conservation function,supply and demand matching,and risks of land use in the arid zone of central Ningxia from 2000 to 2020.The results show that:In the past 20 years,there has been a significant expansion of construction land,mainly due to the conversion of grassland and cultivated land,and the increase has intensified,exacerbating soil conservation risks.The total supply and demand for soil conservation are both on the rise,with an increase in areas where supply falls short of demand.The demand for soil conservation in Tongxin County,Hongsipu District,and Haiyuan County is increasing,and the trend of supply-demand ratio is increasing,while the spatial matching between supply and demand is generally decreasing.From the perspective of supply and demand risk,the high risk of supply and demand of soil conservation services is mainly distributed in Hongsibao District,Haiyuan County,the northern part of Yanchi County and the northwest of Tongxin County,which has decreased from 2010 to 2020,but there is still risk pressure.Therefore,the control measures from the aspects of supply,demand and risk management are proposed to provide a credible basis and path reference for improving the value of land use and soil conservation services in arid and ecologically fragile areas.关键词
干旱生态脆弱区/土壤保持/供需匹配/InVEST模型Key words
Arid and ecologically fragile areas/Soil conservation/Matching supply and demand/InVEST model分类
农业科技引用本文复制引用
冯骁,吴元元,陈睿山,张澳群..干旱生态脆弱区土地利用转化的土壤保持服务供需匹配研究[J].安徽农业科学,2025,53(8):35-41,46,8.基金项目
国家社会科学基金项目(21BMZ043) （21BMZ043）
宁夏自然科学基金项目(2024AAC03081). （2024AAC03081）
