为进一步深化入海河流感潮河道的健康评价研究，根据感潮河道水文、水环境及水生态特点，建立包括河流形态、水文、水质、咸潮入侵、生物和社会服务功能等6方面12个具体评价指标的感潮河道健康评价指标体系，提出河道分段与全河道综合的解决长河道自然特征与社会功能空间差异问题的评价方法，并以闽江下游河道为例进行健康评价。闽江下游河道可以分为水口坝下-分流口段、分流口-洪山桥（北港）段、洪山桥-汇流口（北港）段、分流口-汇流口（南港）和汇流口-闽江口段等5个河段，除了分流口-汇流口（南港）河段健康状态为亚病态，其他河段为一般，闽江下游河道总体健康状态为一般。基于分段-综合河流健康评价模型，获取河流健康等级标准及各河段健康状况，采用博弈论优化指标的组合权重，可降低因主观因素对评价结果带来的影响，值得进一步推广应用。

In order to study the health evaluation of the tidal river,12 specific aspects including river morphology,hydrology,water quality,saltwater invasion,biological and social service functions were constructed based on the hydrological,water environment and water ecological characteristics of tidal channel.A segmentedcomprehensive evaluation method was proposed to solve the special difference between the natural characteristics and social function of the long river channel.For health[JP] evaluation,the lower reaches of the Minjiang River were taken as an example in this study.The lower reaches of the Minjiang River can be divided into 5 segments,i.e., the dam of Shuikou power stationBifurcated segment,BifurcatedHongshan Bridge (North channel) segment,Hongshan BridgeConfluence (North channel segment BifurcatedConfluence (South channel) segment and ConfluenceMingjiang River mouth segment,respectively.The results revealed that health state of the BifurcatedConfluence (South channel) segment was categorized in subhealth,while the other 4 segments channels and the overall health status of the lower reaches of the Minjiang River were in general grade.Based on the segmentedintegrated river health evaluation model,the grade criteria of river health and the health status of each river segment can be obtained.The use of game theory to optimize the combined weights of indicators can reduce the subjective impact of weight on the evaluation results,which is worthy of further promotion and application.

国家自然科学基金(41877167)