Ecological Network Planning in Shenmu City Based on the Framework of"Sensitivity,Importance and Connectivity"
Constructing ecological networks is of important significance for improving regional ecological security and promoting sustainable urban development.The paper identifies ecological source areas based on the results of integrated evaluation of"ecological sensitivity-importance of ecosystem services-landscape connectivity",applies the MCR model and Gravity model to determine ecological corridors,extracts ecological nodes based on circuit theory to form an ecological network where points,lines,and surfaces intersect,and classifies and demarcates the key areas for ecological restoration in Shenmu City.The results indicate that there are a total of 22 ecological source areas in Shenmu City,with the area of 536.80 km2,mostly concentrated in the southeast.The average dPC value is 7.16,indicating poor overall connectivity.Totally,46 potential ecological corridors are identified,with the length of 365.39 km,which are primarily concentrated in the southeast.Additionally,124 ecological nodes are extracted,including 42 ecological pinch points,59 ecological barriers,and 23 ecological ruptures.Based on the results of the ecological network planning,low-quality ecological spaces are recognized,which are further classified into key restoration areas,ecological enhancement areas,and ecological conservation areas.Subsequently,a hierarchical control strategy for source areas,corridors,nodes,and low-quality ecological spaces is proposed,aiming to provide references for the ecological restoration of other ecologically fragile counties.
ecological networkecological sensitivityimportance of ecosystem serviceslandscape connectivityShenmu City
NETL
NSTL
万方数据
