Research on the impact of regional market segmentation on the green development of China's economy Research on the impact of environmental regulations on green development of enterprises Research on the effect of environmental regulation on green development efficiency 并列题名：Research on the impact of environmental regulations on green development of enterprises Research on the impact of population aging on economic development in China Research on the micro-effect of macro-policy in the development of county economy Research on the digitalization, green and low-carbon development of the economy Research on the collaborative governance of land and sea environment in the coordinated development of regional economy Research on the supplication of public goods in the development of circle economy Research on the fiscal and taxation policies to deepen the coordinated development of regional economy