Construction and analysis of the ecological security pattern in territorial space for Dongguan City, Guangdong Province
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摘要: 构建国土空间生态安全格局可以约束和引导城市空间发展,实现城市发展与区域环境协调可持续发展。本研究通过遥感生态指数、最小累计阻力模型等方法,识别广东省东莞市生态安全格局的生态源地、生态廊道、生态夹点及生态障碍点等要素,提出相关优化建议。结果表明: ①全市生态基底好,生态空间连片,生态廊道分布均匀且能够有效串联生态源地; ②滨水空间保护提升和道路绿化建设为生态要素流动提供有效路径; ③农业生产、交通运输对生态网络影响最强烈,其次是工业生产和居民生活; ④应将生态源地、12 m宽生态廊道和生态夹点划为生态保护重点区,将200 m宽生态廊道和生态障碍点划为生态修复重点区。本研究可为东莞市构建国土空间生态安全格局提供科学依据。Abstract: Constructing ecological security patterns in territorial space can constrain and guide urban spatial development for coordinated and sustainable development of cities and regional environments. Based on the remote sensing ecological index and the minimum cumulative resistance model, this study identified the ecological security pattern factors for Dongguan City, Guangdong Province, including ecological source area, ecological corridor, ecological pinch point, and ecological barrier. Moreover, this study proposed related optimization recommendations. The results of this study indicate that: ① Dongguan City exhibits a favorable ecological base, contiguous ecological spaces, and evenly distributed ecological corridors that can effectively connect ecological source areas; ② Enhanced waterfront space protection and road greening construction provide effective paths for the flow of ecological elements; ③ Agricultural production and transportation manifest the most significant effects on ecological networks, followed by industrial production and domestic life; ④ Ecological sources, 12-m-wide ecological corridors, and ecological pinch points can be classified as key ecological protection areas, while 200-m-wide ecological corridors and ecological barriers can be categorized into key ecological restoration areas. This study will provide a scientific basis for constructing the ecological security pattern in territorial space for Dongguan.
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