The Research On Coupling Of Livable City Construction And Urban Ecosystem In Changsha

Along with the rapid expansion of city and improvement of people's life quality, concert to the living environment and building the livable city become the important topic of urban development trend. As a leading city of Chang-Zhu-Tan two-oriented society (environment friendly and resource-saving) city group of the reform matched experimental area, Changsha should hold the historical mission to explore the central city development, rise the human and the nature harmonious coexistence and realize sustainable development of new urbanization. Construction Changsha for a livable city is the necessary choice of the era. However, livable city construction and urban ecosystem restrict each other as well as promote each other. So, study the relations between Changsha livable city construction and urban ecosystem, accurate evaluation of the coupling degree at present, and giving some countermeasures about Changsha livable city construction, are of important theoretical value and practical significance.Using the latest research results of the sustainable development theory, ecology, urban ecosystem, urbanology and sociology, this paper set up the Changsha city livable city evaluation system, city ecosystem evaluation system, the coupling model between urban construction and urban ecological system, and figure out the coupling degree of the Changsha city construction and urban ecological system. According to evaluation results, a series of countermeasures about Changsha livable city construction have been put forward.Research results mainly include:(1) Enrichment the connotation of the urban ecosystem and the sustainable development. Urban ecosystem is a typical artificial ecosystem, who's core is citizen, is consisting of urban economy subsystem, natural environment subsystem, society and population subsystems. Construction the urban ecosystem should be based on the theory of sustainable development. This paper put the concept of livability, two-oriented society, city informatization, city management into urban ecosystem. Consequently, goal of city construction is more cleanly, the theoretical intension of the sustainable development is more fulfilled and the guidance to the urban construction is more specific.(2) This paper optimization designs city ecosystem index system and evaluates the Changsha urban ecosystem. Basing on the traditional evaluation methods about urban ecosystem, it rebuilds Changsha urban ecosystem evaluation index system use systematic principle, which is divided into target layer, criterion layer, field layer and index layer, including5criterion indexes,10field indexes and60index level indexes. Then it assumes the evaluation algorithm and obtains the values of natural ecological subsystem, population ecological subsystem, economic ecological subsystem, social ecological subsystem and urban management subsystems. The conclusion of the ecological system of Changsha is that the overall evaluation value is82.24, belong to a good level.(3) This paper establishes evaluation index system of livable city and evaluates the livability of Changsha city. On the basis of analysis about common method to livable city, it establishes five principles in order to evaluate Changsha's livability index system. They are systematic principle, overall principle, human-oriented principle, quantifiable principle, dynamic principle, regional principle. The basic framework of Changsha city habitability evaluation index system is designed, including four levels:target level, criterion level, field level and index level,7criteria level indexes,24field level indexes and81index level indexes. Integrated using subjective evaluation method and objective evaluation method, this paper designs the evaluation model and figures out the result: Changsha's livable value is80.61. That is to say, Changsha is a livable city.(4)This paper evaluates the coupling degree of Changsha livable city construction and urban ecosystem. Firstly, analyses the influence each other of Changsha city construction and urban ecosystem. Secondly, builds the coupling degree evaluation index system about Changsha's livable city construction and urban ecosystem coupling index system. Thirdly, using principal component analysis and factor analysis method, designs the coupling model and the coupling level. Then, from the coupling degree, the coordinate development degree and coordinated development coupling degree as well time and space2dimensions, evaluates the status of Changsha city. The result shows that Changsha city construction and urban ecological system belong to the highly coupled condition.(5)Based on the above conclusions, the writer puts forward some related countermeasures about Changsha livable city construction. The methods are consisted by general idea of livable city construction, building steady economic rapid development mechanism, the urban ecological system, and improve the harmonious city social security mechanism, improve life comfort and safety, improve the taste of the city residents happiness index increase in five aspects, put forward the concrete construction method.Main innovation points of thesis are:(1) Putting "livability","informatization","city mamagement" and other important idea into urban ecosystem evaluation process, optimization design urban ecosystem evaluation index system and evaluation model, from natural ecological subsystem, population ecological subsystem, the economic ecological subsystem, social ecological subsystem and city management subsystem five aspects, selects60main evaluation factors to give a general assessment of Changsha. The conclusion is Changsha's ecological system is good state.(2) Putting "two type society","green GDP","happiness index" and other important concept into livable city evaluation process, from the economic development, urban civilization, ecological environment, life convenience, city safety, efficiency management and urban innovation ability seven aspects, this paper designs Changsha city livability evaluation index system consisting of24level3indexes and81level4indexes. The conclusion is that Changsha belongs to the more livable city.(3) Build the coupling model and the coupling evaluation index system of Changsha city construction and urban ecological system. Using principal component analysis, from the coupling degree, coordination degree and coordinate development coupling degree three aspects as well as time and space and space two dimensions, this paper evaluate Changsha's coupling values. The conclusion shows that the total trend of Changsha city construction and urban ecological system is gradually approach higher coupling from a senior coupling. Based on the analysis of the coupling of Changsha city construction and urban ecological system, this paper puts forward some strategy about of Changsha's livable city construction. They have strongly guidance to uplift the city quality of Changsha and enhance resident's happiness.