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Research On The Impact Of Urbanization On The Value Of Ecosystem Services In The Middle Reaches Of The Yangtze River

Posted on:2021-05-29Degree:MasterType:Thesis
Country:ChinaCandidate:H P LiFull Text:PDF
GTID:2415330611460456Subject:Human Geography
Abstract/Summary:PDF Full Text Request
The ecosystem provides the necessary material foundation for human survival and development,and its service functions play a pivotal role in maintaining life balance and the environment.Rapid urbanization development will have a huge impact on the value of ecosystem services.Therefore,exploring the impact of urbanization development on the value of ecosystem services provides a new perspective for the realization of ecological civilization construction of urban agglomerations and high-quality urbanization development paths.This study focuses on the urban agglomeration in the middle reaches of the Yangtze River as a research object.It comprehensively analyzes the urbanization development level and ecosystem service value of the region in 2000,2010,and 2018,and analyzes the impact of urbanization on ecosystem service value.The purpose is to deeply analyze the urbanization level and the evolution characteristics of ecosystem service values in the urban agglomerations in the middle reaches of the Yangtze River.Based on the empirical analysis of regional urbanization and ecosystem service values,and to explore the impact mechanism,analyze the status and clarify the reasons.Provide reference for promoting sustainable development of urban agglomerations in the middle reaches of the Yangtze River.Based on the related theories of urban agglomerations,urbanization,ecosystem services,and complex system theories,strictly follow the index selection principle,select 14 indicators,and use the entropy method and comprehensive evaluation method to comprehensively measure the human urbanization,economic urbanization,space urbanization and social urbanization in four dimensions.Land use data was interpreted by remote sensing in 2000,2010,and 2018.The equivalent factor method was used to calculate the value of ecosystem services,and the spatial distribution was analyzed with exploratory spatial data.Using spatial regression models to explore the effects of population urbanization,economic urbanization,spatial urbanization,and social urbanization on the value of ecosystem services.Finally,based on the actual development status of the urban agglomerations in the middle reaches of the Yangtze River,based on the results of empirical analysis,diagnose the ecological and environmental problems in the process of urbanization in the area.Based on the problem diagnosis,propose urban agglomerations to enhance the value of ecosystem services sustainable development strategy.The following conclusions are drawn: first,during the research period,the level of urbanization in the middle reaches of the Yangtze River has increased year by year.It increased from 30.8% in 2000 to 67.4% in 2018,but showed a large difference in spatial distribution,forming three centers spatial structure with three central cities of Wuhan,Changsha and Nanchang as the core.Other prefecture-level cities are developing.Second,the value of ecosystem services increased slightly during the research period,with the total amount increasing from 26757.30 trillion to 26799.30 trillion yuan,an increase of 42 trillion,and the rate of change was 0.16%,but the spatial distribution was significantly different.Third,among the various ecological types,the type with the largest average contribution rate is forest land,reaching 70%.In terms of the value contribution of different ecosystem service functions,the contribution rate of water conservation is the largest,accounting for 17.80% of the total value of ecosystem services.Fourth,the impact of urbanization on the value of ecosystem services is complex.Population urbanization has a negative impact on the value of ecosystem services,economic urbanization has a positive impact on the value of ecosystem services,and spatial urbanization has a negative impact on the value of ecosystem services,social urbanization has a positive impact on the ecosystem.According to the conclusions obtained from the empirical analysis,it provides targeted opinions and suggestions for the sustainable development of urban agglomerations.
Keywords/Search Tags:Urbanization, Ecosystem service value, Spatial regression model, Urban agglomeration in the middle reaches of the Yangtze River
PDF Full Text Request
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