江汉平原河湖水系连通性评价研究  

Research on the Connectivity Evaluation of River and Lake Systems in Jianghan Plains

作　　者：范鲁晔 顾文权[1] 邵东国[1] 刘杰 FAN Lu-ye;GU Wen-quan;SHAO Dong-guo;LIU Jie(Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,Hubei Province,)

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《中国农村水利水电》2023年第8期111-119,共9页China Rural Water and Hydropower

基　　金：国家自然科学基金区域创新发展联合基金重点支持项目(U21A20156)。

摘　　要：河湖水系连通性评价对实施区域水网连通战略,提高区域水资源统筹调配和承载能力,修复和改善水生态环境具有重要意义。以江汉平原河湖水系为研究对象,采用考虑闸站阻隔效应的改进图论法与基于多维连通机制的层次分析法,从网络结构和连通功能两方面分析评价了河湖水系连通现状与影响因素。结果表明:①研究区水网结构连通性得分为0.7172,处于“较好”等级,但空间分布不均衡,西部和东部连通性较高,中部连通性较低,通顺河流域连通性高于四湖流域;②研究区水网功能连通性得分为0.6885,处于“较好”等级,主要受区域灌排闸站数量较多、控制程度较高、闭合时间较长等不利因素影响,局部地区如四湖总干渠、通顺河以及洪湖等水流不畅,连通性较低;③结构和功能连通性评价结果基本一致,评价方法可靠性及适用性较强,可为江汉平原水网工程体系调整与生态河湖连通系统建设提供一定参考。Evaluating the connectivity of river and lake systems is important for implementing the regional water network connectivity strategy,improving the regional water resources coordination,deployment and carrying capacity,and restoring and improving the water ecological environment.In this study,river and lake systems in the Jianghan Plain are taken as the object,and the improved graph theory method considering the barrier effect of gates and dams and the hierarchical analysis method based on multidimensional connectivity mechanism are adopted.The current situation and factors influencing the connectivity of river and lake systems are analyzed and evaluated in terms of network structure and connectivity function.The results show that:①The structural connectivity of the water network in the study area is 0.7172,which is in the“good”level,but the spatial distribution is uneven,with higher connectivity in the west and east,lower connectivity in the middle,and higher connectivity in the Tongshun River area than in the Four Lakes area;②The functional connectivity of the water network in the study area is 0.6885,which is in the“good”level.Mainly affected by the number of regional irrigation and drainage gates,the high degree of control and the long closing time,local areas such as the Four Lakes Main Canal,the Tongshun River and Hong Lake have poor water flow and low connectivity;⑤The results of structural and functional connectivity evaluation are basically consistent,and reliable and applicable are the evaluation methods,which can provide some reference for the adjustment of water network engineering system and ecological river-lake connectivity system construction in Jianghan Plains.

关 键 词：连通性评价 改进图论法 层次分析法 河湖水系 江汉平原 

分 类 号：TV213.4[水利工程—水文学及水资源]