关键词: 河流健康评价;熵值G2赋权;岸线恒极;水文化;指标体系;权重;松阴溪流域;

Abstract: The evaluation of river health is the prerequisite and foundation for rational development, utilization, management and protection of river resources and environment.With the development of China's national conditions and water conditions, the scientific evaluation method of river health needs to be further improved.On the basis of existing research, two new indicators, namely, the degree of cultural construction and the index of shoreline vegetation retention were added, and the entropy G2 assignment method was used to calculate the weights of the indicators, so as to improve the river health evaluation index system.The new method was applied toevaluate the health of rivers in Songyin River basin of Zhejiang Province.The results showed that:(1) the weights of the criteria level were social service function > biology > water > basin;(2)Songyin River basin was generally at the “healthy” level;(3) the main constraints affecting the health of the river included over-exploitation and utilization of water resources and discharge of the water pollution.Countermeasures for the management and ecological restoration of the river's health were put forward in three aspects, namely, strictly controlling the development and utilization of the river's shoreline, strengthening the protection of aquatic biodiversity, and reasonably improving the river's flood control capacity.

Key words: river health evaluation; entropy G2 assignment; shoreline constant pole; water culture; index system; weight; Songyin River Basin;