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1.武汉大学城市设计学院,武汉 430072
2.湖北省规划设计研究总院有限责任公司,武汉 430060
3.湖北省人居环境工程技术研究中心,武汉 430072
Received:15 September 2025,
Published:15 January 2026
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李锦,廖文秀,周燕,等.“供给-流动-需求”视角下雨洪安全格局构建与优化:以湖北省通城县为例[J].华中农业大学学报,2026,45(1):117‐129.
LI Jin,LIAO Wenxiu,ZHOU Yan,et al.Construction and optimization of rainfall-flood safety pattern from perspective of “supply-flow-demand” : a case study of Tongcheng County, Hubei Province[J].Journal of Huazhong Agricultural University,2026,45(01):117-129.
李锦,廖文秀,周燕,等.“供给-流动-需求”视角下雨洪安全格局构建与优化:以湖北省通城县为例[J].华中农业大学学报,2026,45(1):117‐129. DOI: 10.13300/j.cnki.hnlkxb.2026.01.011.
LI Jin,LIAO Wenxiu,ZHOU Yan,et al.Construction and optimization of rainfall-flood safety pattern from perspective of “supply-flow-demand” : a case study of Tongcheng County, Hubei Province[J].Journal of Huazhong Agricultural University,2026,45(01):117-129. DOI: 10.13300/j.cnki.hnlkxb.2026.01.011.
为缓解城市洪涝灾害、促进雨洪调节服务供需匹配,推动城乡生态空间高质量发展,引入生态系统服务流理论,构建耦合雨洪调节服务供需作用与服务流动机制的雨洪安全格局。以湖北省通城县为例,采用SCS-CN模型与洪水风险指数分别量化雨洪调节服务的供给与需求;通过冷热点分析识别生态供需源地;基于水文分析和电路理论构建雨洪调节服务的流动路径,划定蓝线廊道、绿线廊道与供需廊道,并识别关键节点。结果表明:通城县雨洪调节服务供需呈现“西南-东北盈余、中心赤字”的显著错配格局,且中心城区供需失衡程度尤为突出,共识别出供给源地276.15 km
2
,需求源地189.87 km
2
,各类廊道391.71 km,关键生态节点100处。据此提出“三区三带”优化方案,通过强化服务流动路径连通与关键节点保护等措施实现格局优化;并从供给、需求、服务流空间3个维度系统提出调控策略。
To alleviate urban rainfall and flood disasters, promote the matching of supply and demand for rainfall and flood regulation services, and advance the high-quality development of urban and rural ecological spaces, the ecosystem service flow theory is introduced to construct a rainfall and flood safety pattern that couples the supply-demand interaction of rainfall and flood regulation services with the service flow mechanism. Taking Tongcheng County, Hubei Province as a case study, the SCS-CN model and flood risk index were used to quantify the supply and demand of rainfall and flood regulation services, respectively. Hotspot and cold-spot analyses were employed to identify ecological supply and demand source areas. Based on hydrological analysis and circuit theory, the flow paths of rainfall and flood regulation services were constructed, delineating blue-line corridors, green-line corridors, and supply-demand corridors, while key nodes were identified. The results show that the supply and demand of rainfall and flood regulation services in Tongcheng County present a significant mismatch pattern of “surplus in the southwest and northeast, deficit in the center”, with particularly prominent imbalance in the central urban area. A total of 276.15 km² of supply source areas, 189.87 km² of demand source areas, 391.71 km of various corridors, and 100 key ecological nodes were identified. Accordingly, an optimization plan of “Three Zones and Three Belts” was proposed to optimize the pattern by strengthening the connectivity of service flow paths and protecting key nodes; and systematic regulatory strategies were put forward from three dimensions: supply space, demand space, and service flow space. This study provides a reference for alleviating rainfall and flood disasters from the perspective of ecological space supply-demand matching. Future research can be further deepened by integrating long-term series data and multi-scenario simulations of heavy rains.
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