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A Study On The Carrying Capacity Of The Bay Ecological Environment Based On The Service Function Of The Marine Ecosystem Taking The Yueqing Bay As An Example

Posted on:2019-08-15Degree:MasterType:Thesis
Country:ChinaCandidate:X J PengFull Text:PDF
GTID:2381330566474616Subject:Environmental Science and Engineering
Abstract/Summary:PDF Full Text Request
There are many different ecosystems on the earth.As one of the oceans,its status is self-evident.The essential material and environmental resources for human development can be obtained from vast oceans.However,with the large-scale exploitation and utilization of marine resources,the marine environment in the coastal waters of China has been greatly damaged in recent years.Therefore,the research of marine carrying capacity has become the focus and focus of the current research.Under the current development mode,limited marine resources are difficult to carry out the needs of sustainable development.As an important part of the marine system,the Gulf has attracted a large number of population to develop this economy and trade.With people turning their eyes on the development of the Gulf,the bay is at the high tide of development.Therefore,this article is based on the service function of the marine ecosystem as the starting point,and studies the specific factors affecting the bearing capacity of the Bay ecological environment to how to construct the evaluation index system of the bearing capacity of the Bay ecological environment.In order to solve the problem that the ecological environment of the Gulf is deteriorating and the Bay ecological environment is not clearly understood in order to solve the problem that the ecological environment of the bay is deteriorating because of the high concentration of the human economy and the overexploitation of the present stage.On the basis of studying the relevant theories and evaluation methods of the study on the bearing capacity of the Bay ecological environment,this paper further analyzes the key and difficult points of the study on the bearing capacity of the Bay ecological environment,and looks forward to its research direction in order to grasp the direction of the study on the bearing capacity of the Bay ecological environment and provide the related research for the relevant research.Study for reference.Through the analysis and summary of the related research on the bearing capacity at home and abroad,and on the basis of the theory of marine ecosystem services,this study first expatiates on the concept of the bearing capacity of the Bayecological environment,and then explains and describes the concept and composition of the marine ecosystem service function in detail.The connotation and concept of the bearing capacity of the Bay ecological environment based on the marine ecosystem service function should be studied.At the same time,the influence factors and the evaluation index system are thought and discussed.The evaluation index system is set up from three aspects of pressure,state and response,and combined with the marine ecosystem suit.The selection of the indexes is the true situation of reflecting the bearing capacity of the Bay ecological environment in the region.At present,the main mainstream is the pressure state response index system model,which first uses the model to calculate,then analyzes,and finally forms the targeted countermeasures.This paper takes Yueqing Bay as a specific research object for analysis,discussion and verification.On the basis of the advice of experts,the index of scientific and rational reflection of the ecological environment carrying capacity of the bay is calculated and analyzed on the basis of consulting experts on the basis of field investigation and consulting local relevant information.So as to analyze whether the method proposed in this study is suitable for the study of Bay's eco-environmental carrying capacity.In this paper,10 representative indexes are selected.In the selection of the indexes,priority is given to the indexes of high availability,high scientific nature and strong mutual influence among the indexes.Then,a more scientific DEMATEL method is used to calculate and screen the selected indexes,and the reasons for each index are obtained.It is found that 5 indicators are causal factors,and the remaining 5 indicators are outcome factors,so as to verify and reveal the degree of interaction between various indicators.Then we use the analytic hierarchy process(AHP)to empower the 5 factors,and calculate the comprehensive index of the ecological environment carrying capacity of Yueqing Bay Bay by the comprehensive index method.The results show that Yueqing Bay is in a weak sustainable development level.In view of the results of the evaluation,the bottleneck and the existing problems of the development limit of Yueqing Bay are found out,and then the views on the sustainable and healthy development of Yueqing Bay are put forward in the light of local conditions and the prospects are put forward.
Keywords/Search Tags:Ecological environment carrying capacity of the Bay, Index system, P-S-R model, Yueqing Bay
PDF Full Text Request
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