基于改进阻隔系数法的全国主要河流纵向连通性评价  

Assessment of longitudinal connectivity of major rivers across China based on enhanced barrier coefficient method

作　　者：侯佳明 曾庆慧 胡鹏[1] 蒋云钟[1] 唐家璇 杨钦 张璞 HOU Jiaming;ZENG Qinghui;HU Peng;JIANG Yunzhong;TANG Jiaxuan;YANG Qin;ZHANG Pu(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;China South-to-North Water Diversion Corporation Limited,Beijing 100036,China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038 [2]中国南水北调集团有限公司,北京100036

出　　处：《水资源保护》2024年第6期181-187,197,共8页Water Resources Protection

基　　金：国家重点研发计划项目(2022YFC3204200);国家自然科学基金项目(52122902,U2240202);流域水循环模拟与调控国家重点实验室自主研究项目(WR110146B0022024)。

摘　　要：为提升河流纵向连通性评价的合理性,在传统阻隔系数法的基础上,引入阻隔物位置和类型修正系数,提出了一种综合考虑拦河建筑物位置和类型的改进阻隔系数法,并采用改进阻隔系数法评价了全国流域面积超过1万km 2的215条主要河流的纵向连通性。评价结果表明:2020年评价河流的平均纵向连通性指数为1.08,等级为差;在时间维度上,自1960年以来全国主要河流纵向连通性呈加速受损趋势,且2000年以后受损程度最为强烈;在空间维度上,东南诸河区、珠江区和长江区现状纵向连通性等级为劣,海河区和辽河区等级为差,松花江区是唯一综合评价等级为优的一级区。To improve the rationality in river longitudinal connectivity evaluation,an enhanced barrier coefficient method was proposed based on the traditional barrier coefficient method,which takes into account the location and type of river blocking structures by introducing corresponding correction factors.The enhanced barrier coefficient method was used to assess the longitudinal connectivity for 215 major rivers across China,each with a watershed area exceeding 10 thousand km 2.The results indicate that in 2020,the average longitudinal connectivity index of the evaluated rivers was 1.08,categorized as a poor level.Temporally,since 1960,the longitudinal connectivity of the major rivers has exhibited an accelerating trend of deterioration,with the most intense deterioration occurring after 2000.Spatially,the worst longitudinal connectivity occurred in the Southeast River Region,Pearl River Basin,and Yangtze River Basin,categorized as a very poor level,the Haihe River Basin and Liaohe River Basin were categorized as a poor level in the longitudinal connectivity,and the Songhuajiang River Basin was the sole area exhibiting the best connectivity.

关 键 词：水系连通 纵向连通性 阻隔系数法 水利工程 河流健康评价 

分 类 号：TV213.4[水利工程—水文学及水资源]