Ecological Restoration of Karst Mountainous Areas Under the Goal of County Ecological Security—Taking Ningyuan as an Example
Ecological restoration is an important part of land space governance.Under the goal of county ecologi-cal security,Taking Ningyuan in Hunan Province as an example,this paper,based on the ecosystem service func-tion of the Nanling Mountain and the characteristics of Karst Plateau landform,takes the ecological security pat-tern as the breakthrough point,spatially identifies the importance of county ecological protection,analyzes the county ecosystem problems from the overall ecological pattern,and then divides the ecological protection and res-toration zones,and proposes key ecological restoration projects.The results show that:① Ningyuan County has a high level of ecological protection importance,with 59.16％of the county's ecological protection being extremely important and important areas,and the overall ecological network protection pattern is"two screens,four rivers,multiple corridors,and multiple points";② There are many problems in the county land space,such as broken ec-ological patches,serious erosion of wildlife corridor,intensified water and soil loss,and further spread of rocky desertification risk;③ A problem oriented,zoning based,and key engineering based ecological restoration plan is in line with the formation and optimization of county-level ecological security.
ecological securityecological restorationKarst mountain area
NETL
NSTL
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