Most researchers focus on the identification of ecological security pattern. However, there is a lack of research on the ecological security pattern of karst fragile area with significant human-land conflict and important ecological shelter function. The main objectives of this paper were to add the rocky desertification to the construction of ecological security pattern and provide reference for ecological reconstruction of karst ecological fragile area. Based on the rocky desertification in karst area, this study added a new index in resistance surface correction, and put rocky desertification in the analysis of ecosystem services and ecological sensitivity. Corridors were identified by the least-cost path and circuit theory. Combined with the expansion probability of construction and cultivated land, this study developed a classification system of ecological source area and corridor. The ecological source areas is 24,254 km2 and account for 48.4% of the total area. There are 19 corridors, including 6 least-cost path corridors, 10 optimal current density corridors, and 3 river corridors. A total of 18 ecological barrier points and 8 ecological nodes are distributed on the corridors. The study area consisted of four ecological functional areas: ecological core area, ecological buffer area, ecotone area, and living-productive area, with areas of 32,044 km2, 9542 km2, 6811 km2, and 1398 km2, respectively. The construction of the ecological security pattern enhances the function of ecological barriers and provides a scientific basis for ecological conservation and restoration in a later stage of the karst area in the Wujiang River basin.

中文翻译：

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将生态系统服务和石漠化纳入岩溶生态安全格局识别

大多数研究人员专注于生态安全格局的识别。然而，对于人地冲突显着、生态庇护功能重要的岩溶脆弱区生态安全格局缺乏研究。本文的主要目的是将石漠化纳入生态安全格局的构建，为喀斯特生态脆弱区的生态重建提供参考。本研究在喀斯特地区石漠化的基础上，增加了阻力面修正指标，将石漠化纳入生态系统服务和生态敏感性分析。走廊由最低成本路径和电路理论确定。结合建设和耕地的扩张概率，本研究开发了生态源区和生态廊道的分类系统。生态源区面积24254平方公里，占总面积的48.4%。有19条走廊，包括6条最低成本路径走廊、10条最佳电流密度走廊和3条河流走廊。廊道上共分布有18个生态屏障点和8个生态节点。研究区由生态核心区、生态缓冲区、交错带和生活生产区4个生态功能区组成，面积分别为32044平方公里、9542平方公里、6811平方公里和1398平方公里。生态安全格局的构建增强了生态屏障的功能，为乌江流域岩溶区后期的生态保护和恢复提供了科学依据。