Coastal Environmental Policy, Coastal Aggregate Pollution Level and Coastal Industrial Competitiveness

Coastal pollution is an undesirable output of cross-border trade. This paper demonstrates coastal aggregate pollution levels as unilateral and multilateral environmental tax changes in differentiated sectors under the assumption of heterogeneity in productivity and monopolistic competition in an open economic circumstance. Coastal economies will accelerate as a result of trade, but pollution levels are also expected to rise. This paper finds that when the government's environmental policy is biased towards unilateral financial sanctions, the environmental pollution will increase, while multilateral financial sanctions will reduce the environmental pollution. In this paper, the emphasis on coastal areas and marine economy is added to the setting of the model, and it is believed that industrial pollution control can be realized by enhancing industrial competitiveness in coastal environmental governance. This paper applies this conclusion to the pollution control of ports in Jiangsu Province, and puts forward feasible environmental policy suggestions in the near future development of port and marine economy.