北京大学学报（自然科学版）2025，Vol.61Issue(3)：545-556,12.DOI:10.13209/j.0479-8023.2025.036
区域生态系统洪水调节服务供需平衡及风险管理分区
Supply-Demand Balance of Ecosystem Flood Regulation Service and Flood Risk Management Zoning:A Case Study in Lan County,Shanxi Province
摘要
Abstract
To better regulate and manage flood risk,the supply of ecosystem flood regulation service was evaluated through the SCS-CN model,and the demand of ecosystem flood regulation service was calculated as flood inundation amount through the FloodArea model in Lan County,Shanxi Province.Meanwhile,flood risk zoning was conducted by combining with population distribution.The results are as follows.1)The supply mount of ecosystem flood regulation service of 5-year,10-year and 25-year return period flood presented an increasing trend.However,the supply amount for the 10-year return period flood was lower than that for the 5-year by 33.05%,mainly due to the difference in soil moisture.2)The demand amount of ecosystem flood regulation service of 5-year,10-year and 25-year return period flood increased gradually.When one 5-year return period flood and one 10-year return period flood occurred consecutively,the flood risk arose principally from the increase in submerged depth.3)The unbalanced supply-demand area of ecosystem flood regulation service of 10-year return period flood was far larger than those of 5-year and 25-year return period flood,which indicates that the ecosystem flood regulation service supply was not enough to cope with the situation of small and moderate flood occurred in succession.The unbalanced supply-demand area of 5-year and 25-year return period flood was affected principally by elevation and land use,while that of 10-year return period flood was influenced mainly by precipitation.4)The high priority area of 5-year,10-year and 25-year return period flood was distributed merely in Dongcun Town,whereas priority area and second-dary priority area were distributed in accordance with the unbalanced supply-demand area of ecosystem flood regula-tion service.The results can provide theoretical basis for ecosystem service management and flood risk management.关键词
生态系统服务/洪水调节/供需平衡/洪水风险管理/岚县Key words
ecosystem service/flood regulation,supply-demand balance,flood risk management/Lan County引用本文复制引用
杨丽雯,张亚琳,马雅丽,栾青,洪丹丹,王大勇,徐树媛..区域生态系统洪水调节服务供需平衡及风险管理分区[J].北京大学学报（自然科学版）,2025,61(3):545-556,12.基金项目
山西省基础研究计划(202203021211082,202303021211196)和宁夏回族自治区重点研发项目(2023BEG02040)资助 （202203021211082,202303021211196）
