海洋生态文明建设能否改善海岸带环境 --来自国家海洋生态文明示范区的证据

Developing the marine economy, protecting the marine ecological environment, and speeding up the construction of marine power are important components of the Chinese path to modernization. To promote marine ecological preservation and high-quality development of the marine economy in a coordinated manner, China has carried out the construction of marine ecological civilization demonstration zones, aiming to deepen marine ecological governance and solve difficulties in marine development. Based on the panel data of 47 coastal cities from 2006 to 2019, this study regarded the construction of China' s national marine ecological civilization zones as a quasi-natural experiment, using the difference-in-differences method to explore the impact mechanism of this pilot policy on the coastal zone environment. The results showed that: ① The marine ecological civilization demonstration zones significantly improved the coastal zone environment and effectively promoted the pollution control of the coastal environment and nearshore water quality environment. ② Heterogeneity analysis showed that regional marketization level and local government promotion mechanisms had different moderating effects on the construction of marine ecological civilization demonstration zones. ③ The construction of the marine ecological civilization demonstration zones affected the coastal zone environment by increasing the intensity of the government' s governance and the tax burden on enterprises. Increasing the intensity of government governance could effectively reduce coastal wastewater and waste gas emissions but could not highlight its 'greening' effect on the nearshore water quality environment. Increasing the tax burden on enterprises was conducive to giving full play to the impact of market-oriented and paid management mechanisms on the coastal zone environment. This study focuses on the analysis of coastal zone environmental effects from the perspective of land and sea, which enriches the research on the impact of demonstration zone construction on the coastal zone environment. In the process of comprehensive regulation, we should uphold the concept of overall coordination between land and sea. While giving full play to the role of political guidance, we should effectively enhance the efficiency of economic governance and steadily promote the continuous improvement of the environmental quality of coastal zones. [ABSTRACT FROM AUTHOR]