Study On Marine Ecosystem Service And Its Value Assessment

The marine economy is one of the material bases for supporting social and economic development in coastal areas. The sustainable utilization of marine resources is a premise in realizing the sustainable development of society and economy. The research of the marine ecosystem plays an important role in the human welfare,marine organization,sustainable development and country authority. Therefore, the marine ecosystem service and ecosystem value are the aspects of the earth living system and they are also the basic elements of the society and sustainability.However, when (we) utilizing the marine resources, people always pay attention to its direct utility value and market value, and they have neglected its ecological value. The marine ecosystem has been damaged and the supportive ability of marine ecosystem service function has been lowered because of the disorder and excessive exploitation and utilization. Although people already accumulated lots of results about the value of the marine ecosystem with GDP, the principle of the marine ecosystem, and the value of the marine system, the research about marine ecosystem service function and the value evaluation have many differences. The study on the value appraisal of marine ecosystem function is a hot spot at present, so lots of theories and methods are under exploration. Thus, based on the comprehensive summary of the progress in related area,the present thesis make a further exploitation on the theory. The paper discuss the meaning of the marine ecosystem service function according to the feature of the marine ecosystem that it has set up the class of the marine ecosystem service function and done some research about the method of the evaluation of the marine ecosystem function appraisal in order to build a set of reasonable and feasible quantization index system on the value appraisal of marine ecosystem service function. Based on detailed analysis of the advance for ecosystem service function and its value assessment, the connotation and definition of marine ecosystem is discussed. According to the characters of marine ecosystem, the classifying system of marine ecosystem is established and value assessment methods of several representative ecosystem services are studied. Finally, with the situation of inner and outer, the research prospect of marine ecosystem service is analyzed and several important problems in further study are pointed out. Through the study and discuss of the marine ecosystem service function, we can draw a picture of the marine ecosystem service function; it will have much significance about formulating policies, developing and using marine resources, and carrying out the sustainability of the marine recourse.