Analysis on the degree of water,sediment and pollution collaborative control in small watershed of Yi River source area
An evaluation index system was established among the sub-systems of water resource management and protection,sediment and soil erosion control,and non-point source pollution prevention and control in a small watershed of the Yi River source region based on the theory of collaborative governance.The coupling coordination degree model was used to analyze the cooperative control degree of the three sub-systems of water,sediment,and pollution in 2006,2009,2012,2015,and 2018.The results showed that the influence degree of each index in the subsystem on the coupling system was significantly different.There was the coupling relationship of mutual influence and restriction among the subsystems,so that the comprehensive evaluation index of the coupling system showed a trend of"slowly rising-slowly declining-obviously rising".The coupling degree among subsystems of small watershed showed a trend of"up-up-down-up"with the coupling coordination degree rising slowly from medium to high and then quickly reaching excellent.This fully indicates that the in-depth development of ecological clean governance of small watershed promotes the degree of coordination among subsystems.
collaborative governancecoupling degreecoordination degreeYi River
NETL
NSTL
万方数据
维普
