The coastal waters around the northern part of Zhejiang Province are confronted by serious environmental threats caused by the rapid development of the economy and highly efficient use of marine resources. In order to reduce and mitigate the possible negative effects of larger sea-related projects on the marine ecological environment,we built an evaluation index system to assess the offshore ecological environmental quality by analyzing the complexity and high turbidity of the water around the northern part...
high inorganic nitrogen and phosphate contents and weak ocean primary productivity are the main factors affecting thequality of this environment.These factors cause high organic pollutant index values,high levels of eutrophication,andserious marine pollut