武汉市近郊典型“三生”梯度带的生态网络优化^*

Ecological Network Optimization in Typical Peri-Urban Production-Living-Ecological Gradient Zones in Wuhan

摘要

【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】With a view to addressing landscape fragmentation, the study explores the pathway to improve the ecological networks in peri-urban production-living-ecological spaces, thereby providing scientific evidence for land use regulation and regional ecosystem restoration practices in the spaces. 【Method】Taking Huangpi District of Wuhan as a case study, an integrated framework of “source identification-corridor construction-network optimization” is established based on MSPA, InVEST, Linkage Mapper, and circuit theory models. Ecological sources and key nodes are comprehensively identified, and the ecological network structures before and after optimization are compared. 【Result】The production space located in the central part of Huangpi District is the core area where there is ecological source loss. A total of ten key nodes are integrated into ecological networks to increase the number of ecological corridors from 77 to 112 and enhance connectivity and structural integrity. 【Conclusion】In the peri-urban fragmented landscape pattern, 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 the key nodes can achieve cost-effective and efficient ecological network optimization. This approach is significant for enhancing peri-urban ecosystem stability and maintaining regional ecological security patterns. In the future, multi-temporal remote sensing data should be integrated with species distribution models to elucidate the spatiotemporal variation patterns of network structure and function, thereby comprehensively enhancing the connectivity and functional integrity of urban ecological networks. This will provide more targeted scientific support and practical guidance for regional territorial spatial planning and ecological restoration project optimization.

关键词

生态网络 / 城乡交错带 / 三生空间 / 城郊 / 电路理论

Key words

ecological network / urban-rural fringe / production-living-ecological space / peri-urban area / circuit theory

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基金资助

*国家自然科学基金面上项目(52478054)

湖北省自然科学基金(2025AFD085)