Evolution of Marine Environmental Health in Jiaozhou Bay in Recent 40 Years Based on the 'Dual Core'Assessment Framework

Abstract

Based on the "dual core" framework for assessing the health status of the offshore ecological environment, the marine environmental health status of Jiaozhou Bay in the past 40 years was comprehensively evaluated, and the evolution process of the ecological environment of Jiaozhou Bay along with the economic and social development of Qingdao was combed. Taking every 10 years as an interval, the "double core" assessment results of the marine ecological environment health of Jiaozhou Bay in the past 40 years are as follows: "good +0.22" from 1981 to 1990, "excellent +0.53" from 1991 to 2000, "good +0.87" from 2001 to 2010 and "excellent +0.90" from 2011 to 2020. With the economic and social development of Qingdao, human beings have made greater efforts to develop and utilize the marine resources and environment of Jiaozhou Bay, and various ecological problems have also occurred in Jiaozhou Bay: the water quality deteriorated in the 1980s, the health status of biological communities declined in the 1990s, and the problem of eutrophication was serious in the 2000s. Since 2010, Qingdao has strengthened ecological protection and environmental governance, and the marine ecological environment of Jiaozhou Bay has been significantly improved. With the acceleration of the transformation of old and new kinetic energy and the continuous optimization and upgrading of industrial structure, the disturbance of economic development activities to the marine ecological environment of Jiaozhou Bay has been continuously reduced. Qingdao has finally realized a benign and healthy green development model between marine economy and ecological environment for Jiaozhou Bay.

Keywords

• marine environmental health assessment
• the "dual core" framework
• jiaozhou bay