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全国水资源分区尺度水系连通性评价

Evaluation of River System Connectivity on Scales of Water Resource Zones in China

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水系连通性与水资源调配、水旱灾害防御、水生态环境保护和修复等水安全保障问题密切相关.针对当前全国范围水系连通性评价研究相对较少,区域间水系连通性横向对比不足,从水系连通基本内涵出发,在水资源分区尺度,选择数量、结构和水力特征及对应的评价指标,结合层次分析法和熵权法,构建了水系连通性评价体系,绘制了全国一级和三级水资源分区水系连通性空间分布图.结果表明,水系连通性总体自东南向西北逐渐递减,按照0.07～0.38、0.39～0.50、0.51～0.78划分低、中、高三类,水系连通性低值主要位于西北内陆干旱区、中值主要位于丘陵区域、高值主要位于长江中下游和淮河流域平原河网区.研究成果将有助于促进流域、区域水系连通系统规划与建设.
River system connectivity(RSC)is closely related with water security issues,including water resources allocation,flood and drought management,and the protection and restoration of aquatic ecosystems.Currently,there is a lack of comprehensive studies evaluating RSC at a national level,and few comparisons were conducted a-mong different water resource zones.To address this gap,an RSC evaluation system is established by employing hi-erarchical analysis and the entropy weight method.The evaluation indices reflect the quantitative,structural,and hydraulic characteristics in line with the fundamental connotation of RSC.The spatial distribution map of RSC val-ues on different scales(first-grade and third-grade national water resource zoning)is plotted.Results indicate that RSC values decline progressively from southeastern to northwestern China,categorizing into low(0.07-0.38),me-dium(0.39-0.50),and high(0.51-0.78)levels.Low RSC values primarily occur in the arid inland areas of northwest China,while medium values are found in hilly regions,and high values are concentrated in the plain riv-er networks of the middle and lower reaches of the Yangtze and Huaihe River basins.This study contributes to en-hancing RSC planning and development at both regional and catchment scales.

river system connectivityevaluation system of river system connectivityscales of water resource zonesChinahydraulic characteristics

徐志成、唐贤琪、王敏、刘尚武、丁兵、闫霞、柴朝晖

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长江科学院水利部长江中下游河湖治理与防洪重点实验室,武汉 430010

长江勘测规划设计研究有限责任公司,武汉 430010

重庆交通大学国家内河航道整治工程技术研究中心,重庆 400074

水系连通性 水系连通性评价体系 水资源分区尺度 全国范围 水力特征

国家重点研发计划项目国家重点研发计划项目国家自然科学基金青年基金项目中央级公益性科研院所基本科研业务费项目中央级公益性科研院所基本科研业务费项目

2022YFC32026012023YFC320950052309003CKSF2024508/HLCKSF2024326/HL

2024

10.11988/ckyyb.20240687

长江科学院院报
长江科学院

长江科学院院报

CSTPCD北大核心
影响因子：0.618
ISSN：1001-5485
年,卷(期)：2024.41(10)