文献类型：期刊文献

英文题名：Construction and Optimization of Ecological Security Patterns Based on Self-Organizing Map and Multisource Data at Different Scales

作者：Zeng, Suping[1,2] Jiang, Chunqian[1] Bai, Yanfeng[1] Jiang, Chunwu[3] Wang, Hui[1] Jia, Zhaohui[1] Liu, En[1] Guo, Lina[1]

第一作者：曾素平

通信作者：Jiang, CQ[1];Jiang, CW[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Xinyu 336600, Peoples R China;[3]Anhui Acad Forestry, Hefei 230031, Peoples R China

年份：2026

卷号：12

外文期刊名：ECOSYSTEM HEALTH AND SUSTAINABILITY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001654719500001)】；

基金：This work was supported by the National Key Research and Development Program of China (No. 2022YFF1303005).

语种：英文

摘要：Establishing ecological security patterns (ESPs) is essential for protecting regional ecological integrity and guiding land-use optimization. Accurate identification of ecological sources is crucial; therefore, a multiscale identification framework has been proposed to address conventional approaches that homogenize sources and overlook scale-dependent effects. A Self-Organizing Map (SOM) was applied in the Dongting Lake Basin within a dual-scale (grid/sub-watershed) "importance-sensitivity-connectivity" framework. The ecological resistance surface was refined using socio-ecological factors, and circuit theory was used to construct ESPs and generate targeted optimization strategies. Key findings include the following: (a) Ecological sources exhibited similar spatial distributions across both scales, concentrating in western mountainous regions and basin margins, and largely absent from urban areas. Grid-scale sources totaled 38 (45,035.47 km2), compared with 28 sub-watershed sources (92,349.85 km2), with the former showing stronger connectivity. (b) Both scales revealed sparse ecological corridors in central regions; at the grid-scale, 90 corridors (3,779.51 km) were mainly in western areas, whereas 56 optimal corridors (2,256.59 km) were concentrated in eastern areas at the sub-watershed scale. (c) The ecological nodes identified at the grid and sub-watershed scales are 129 and 45. Grid-scale nodes were clustered in the western and southern corridors, whereas the sub-watershed nodes were mostly in the eastern and southern corridors. (d) Spatial optimization frameworks were developed as "one ring, two corridors, three zones, multiple cores" (grid-scale) and "one ring, one corridor, three zones, multiple cores" (sub-watershed scale), guiding conservation planning. This framework integrates functional ecological zoning with holistic governance, providing insights for ecological restoration and sustainable management.