China is in an important stage of promoting green economic development,and the river chief system policy has played an important role in promoting water quality improvement.Therefore,in order to analyze the effect of the river chief system policy on water quality improvement in the the Taihu Lake Lake basin,based on the quasi natural experiment of the river chief system policy in the the Taihu Lake Lake basin,the double difference model is used for empirical analysis.The study found that the river chief system policy sig-nificantly improved the water quality in the the Taihu Lake basin,and there was an obvious dynamic effect of this policy on the river water quality.Heterogeneity testing indicates that compared to economically developed Shanghai,the river chief system policy has had a more significant impact on the water environment governance of other cities.The mechanism test results prove that the river chief system can not only directly improve water quality,but also further promote the improvement of water quality in the basin by optimizing the industrial structure.
关键词
河长制/太湖流域/水质改善/双重差分模型
Key words
river chief system/the Taihu Lake Basin/water quality improvement/double difference model