南方滨海农业县国土空间生态修复规划策略OA北大核心CSTPCD

County-level land space ecological restoration planning is the overall planning and design of ecological restoration given a specific county and certain duration.It is a research unit combining the macroecological pattern and implementation of a micro project.On the other hand,China has a vast territory with different natural backgrounds and ecological environmental issues in different places,so it is of theoretical and practical significance to explore the planning strategies of county-level land space ecological protection and restoration in different geographical environments to provide a basis and reference for the preparation of county-level land space ecological restoration planning in China.Based on the data from the third land survey,with the implementation of GIS spatial analysis technology,the index evaluation method was selected to identify the ecological sources,the results of the demarcation of nature reserves were superimposed,and the minimum cumulative resistance model was applied to identify the ecological corridors.Combined with field research,this study analyzed the spatial characteristics and ecological problems encountered by the county and proposed county-level ecological restoration planning strategies for the coastal agricultural areas of southern China.The results revealed the following.1)With the interaction between sea and land,there are abundant ecological resources in Xuwen County,and the utilization rate of agricultural land is high.However,there are problems,such as the extensive use of coastal zones,excessive use of chemical fertilizers and pesticides,non-point source pollution,soil erosion,and degradation of coastal ecosystems.2)The overall framework of the ecological security pattern of Xuwen County is"one core,one belt,two districts,multiple corridors,and multiple nodes".3)Ecological sources and corridors are key components of ecosystems and effective measures should be taken to enhance ecological functions.4)Increasing investment in agricultural science and technology and reducing agricultural pollution,especially soil pollution due to the excessive use of pesticides,and the pollution of reservoir areas and coastal water bodies are important elements of ecological land and space restoration in Xuwen County.5)Research on the interaction and regulation mechanisms between land and sea systems should be further strengthened to provide guidance for the overall planning of land-sea ecological restoration in coastal areas.This study provides a reference for the preparation of county-level land and spatial ecological restoration plans.