Identifying the Landscape Security Pattern in Karst Rocky Desertification Area Based on Ecosystem Services and Ecological Sensitivity: A Case Study of Guanling County, Guizhou Province

Ecological environmental security in karst areas is an issue of global concern. Identifying the ecological landscape pattern (ELSP) key to promoting protection and alleviating land development utilization impacts. sources (ESs) corridors (ECs) are important bases for constructing ELSP. We used five influencing factors (land use type, digital elevation model (DEM), rocky desertification degree, normalized difference vegetation index (NDVI) slope) obtain distribution importance sensitivity values ecosystem services Guanling County, Guizhou Province. The probability connectivity (PC) was calculated, ES extracted by combining services, sensitivity, connectivity. According topographic geomorphological characteristics seven indicators elevation, slope, degree stone desertification, distance from rivers, settlements, roads were selected as resistance outward expansion ESs calculate comprehensive surface County. Based on gravity model, interaction matrix between 10 constructed, magnitude forces source sites quantitatively evaluated distinguish ECs general ECs. study showed that total length County 509.78 km, core area large, accounting 65.73% area. By assessing connectivity, 45 EC obtained based ArcGIS10.8, which constituted Suggestions proposed a planning layout will benefit restoration region according characteristics.