Marine Ecosystem Health Assessment And Management: A Case Study On The Mindong Nearshore Monitor Area

This thesis does a study on the assessment of marine ecosystem health, by taking the nearshore of MinDong ecological monitor area as case study, by using the ecosystem health assessment(EHA) as the method,with the notion that the new direction of Ocean Management should be ecosystem management and establishing preservation area is one of the effective measures to introduce ecosystem management。The whole thesis was mainly composed of two parts: theoretical study and case study.In the theoretical study part, I firstly introduced the evolvement and connotation of the concept of ecosystem health and summarized the progress of ecosystem health assessment. Then I probed into the assessment method and process, including the index system's building, how to use the Analytic Hierarchy Process(AHP) to conform the index system, analyzing the membership between the indexes and imparting the weighing. And lastly, I set up the basic frame of the assessment of marine ecosystem health. Because of the characters of the ocean, the Structure and Function Index Assessment is adopted as the method to assess marine ecosystem health and AHP was used to determine the weighing of indexes on the basis of the index systems' order. Finally,the integrated health indicator can be calculated.The case study part contained the following:1,the general situation of the nearshore of MinDong ecological monitor area,including the origin,natural resources,social economy,ecosystem characters and so on. 2,the preservation area' monitor data in 2004 and 2005 entered into the index system which involved marine ecology indexes,marine environment indexes and social economy indexes.3,The application of the AHP, including: set up the administrative levels, created the comparative matrix, coherence test and calculated the compound weighing. By the calculation, the integrated health indicator of the monitor area in 2004 and 2005 were 1.25 and 1.15.In the end, I made some suggestions about the management and protection of the monitor area.