College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, China.
Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin University of Technology, Guilin 541004, China.
Int J Environ Res Public Health. 2022 May 7;19(9):5699. doi: 10.3390/ijerph19095699.
The ecological security pattern is an important way to coordinate the contradiction between regional economic development and ecological protection and is conducive to promoting regional sustainable development. This study examines Guangxi, a karst region in China. The ecosystem service function and ecological environment sensitivity were both selected to evaluate the ecological conservation importance, and based on the results of the ecological conservation importance evaluation, suitable patches were selected as ecological sources. Meanwhile, resistance factors were selected from both natural factors and human activities to construct a comprehensive resistance surface, circuit theory was used to identify ecological corridors, ecological pinch points, and ecological barrier points, and ecological protection suggestions were then proposed. The results show that there are 50 patches of ecological sources in Guangxi, with a total area of 60,556.99 km; 115 ecological corridors, with the longest corridor reaching 194.97 km; 301 ecological pinch points, whose spatial distribution is fragmented; and 286 ecological barrier points, most of which are concentrated in the central part of Guangxi. The results of this study provide a reference for the construction of ecological security patterns and ecological conservation in developing countries and karst areas.
生态安全格局是协调区域经济发展与生态保护矛盾的重要途径，有利于促进区域可持续发展。本研究以中国喀斯特地区广西壮族自治区为例，选取生态系统服务功能和生态环境敏感性对其生态保护重要性进行评价，根据评价结果选择适宜的斑块作为生态源地。同时，选取自然因素和人为活动阻力因子构建综合阻力面，运用电路理论识别生态廊道、生态节点和生态障碍点，并提出生态保护建议。结果表明，广西有 50 个生态源地斑块，总面积为 60556.99km；115 条生态廊道，最长廊道长 194.97km；301 个生态节点，空间分布呈碎片化；286 个生态障碍点，大部分集中在广西中部。本研究结果可为发展中国家和喀斯特地区的生态安全格局构建和生态保护提供参考。
