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【目的】针对景观破碎化,探索大城市近郊典型“三生”梯度带的生态网络优化路径,为城乡交错区“三生”用地管控与区域生态修复实践提供科学依据。【方法】以武汉市黄陂区为例,整合MSPA、InVEST、Linkage Mapper及电路理论模型等多元技术,构建“源地识别—廊道构建—网络优化”的技术框架,综合识别生态源地与关键节点,并对优化前后的生态网络结构进行对比分析。【结果】武汉市黄陂区中部生产空间是生态源地缺失的核心区域;补充10处关键节点纳入生态网络优化后生态廊道数量由77条增加至112条,连通性与结构完整性得到显著提升。【结论】在城市近郊破碎化景观格局中,生态网络受“三生”空间梯度分异控制,其中中部生产空间在生态流动中具有关键传导作用,通过精准识别并修复关键节点,可实现生态网络的低成本、高效率优化,对提升近郊区域生态系统稳定性、维系区域生态安全格局具有重要的实践意义。后续需结合多时相遥感与物种分布模型,厘清网络结构与功能的时空变化特征,全面提升城市生态网络的连通性与功能完整性,为区域国土空间规划管控、生态修复工程优化提供更具针对性的科学支撑与实践指导。
Abstract:【Objective】Rapid urbanization has caused peri-urban production–living–ecological spaces to exhibit concurrent landscape fragmentation and declining ecological connectivity, posing significant challenges to ecosystem stability. Taking Huangpi District of Wuhan as a case study, this study aims to explore optimization pathways for ecological networks in peri-urban areas and to provide theoretical support for improving regional ecological security patterns. 【Method】An integrated framework of “source identification–corridor construction–network optimization” was established based on MSPA, InVEST, Linkage Mapper, and circuit theory models. Ecological sources and key nodes were comprehensively identified, and network topology indices were applied to compare ecological network structures before and after optimization. 【Result】A total of ten key isolated habitats were identified, covering an area of 5.17 km2. After incorporating them into the ecological network, the number of ecological corridors increased from 77 to 112. Topological analysis showed that these habitat patches did not uniformly increase network connections but effectively filled structural gaps in the ecological network, significantly improving overall network efficiency and connectivity. 【Conclusion】Under the fragmented landscape conditions of peri-urban areas, ecological networks are shaped by the gradient differentiation of production–living–ecological spaces, within which the central production space plays a key mediating role in ecological flows.Identifying and restoring key habitat nodes can achieve cost-effective and efficient ecological network optimization. This approach contributes to enhancing ecosystem stability, maintaining regional ecological security patterns, and supporting territorial ecological restoration practices.
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基本信息:
中图分类号:X171.4
引用信息:
[1]谭通,任怡静,韩依纹.武汉市近郊典型“三生”梯度带的生态网络优化[J].中国城市林业().
基金信息:
国家自然科学基金面上项目(52478054); 湖北省自然科学基金(2025AFD085)
2026-06-15
2026-06-15
2026-06-15