The Spatial Pattern Change Of "Production-Living-Ecological" In Changsha City And Its Driving Factors

In the context of rapid urbanization,urban production,living and ecological space have become hot topics in human-economic geography research.Many scholars have proposed measures such as main functional areas,space control,and “multi-regulation”.Through the exploration of the characteristics of urban "production-living-ecological" spatial pattern and its changing rules,it is helpful to deepen the understanding of urban functional spatial structure and provide theoretical and methodological guidance for optimizing urban functional spatial structure.Based on the systematic review of the urban "production-living-ecological" spatial research literature,this paper takes the composite ecosystem theory,the human-land relationship theory,the land multi-functional theory and the urban spatial structure theory as the guidance,and takes Changsha as the research area,according to the "pattern process analysis ? formation mechanism analysis?optimization strategy design",with remote sensing image,urban land use survey data and related statistical data as the main data source,with 2000-2016 as the analysis period,using grid analysis and positive triangle model analysis,spatial autocorrelation analysis,cold hot spot analysis and sample band analysis,establish a "production-living-ecological" spatial classification system,identify the "production-living-ecological" spatial types in Changsha City in 2000,2009 and 2016,and analyze the spatial pattern of "production-living-ecological" in Changsha City.The characteristics of change and the driving factors are proposed to optimize the spatial pattern of "production-living-ecological" in Changsha.The main findings are asfollows:(1)Based on the analysis of the positive triangle model,the urban "production-living-ecological" space can be divided into production-oriented,life-oriented,ecological-oriented,production-life advantage,ecological-production advantage,ecological-life advantage and "production-living-ecological" balanced type.There are seven types of "balanced".(2)The spatial change of "production-living-ecological" in Changsha City from 2000 to 2016 showed the characteristics of rapid increase in production space and living space,and the reduction of ecological space area,and the increase in living space was larger than the production space;The living space has always been concentrated in the central city,with strong "path dependence",production space mainly distributed outside the living space,and even "expansion" type expansion,ecological space is gradually nested within the city;the overall production of the study area,The function of life is strengthened,the ecological function is weakened,and the strength of the "production-living-ecological" function within the region has also changed.In particular,the internal ecological functions of the city have been strengthened,and the spatial reorganization of different functions has improved the balance of the "production-living-ecological" spatial pattern in the study area;Changsha The comprehensive functional level of the "production-living-ecological" space in the city continued to improve,and the high-level areas gradually gathered into the urban center.The urban functional space structure showed a development pattern ofsingle-core agglomerat?single-core agglomeration-multi-core dispersion?network equalization.(3)The driving factors of the spatial pattern change of "production-living-ecological" in Changsha City are mainly natural environment,social economy and public policy factors.The driving process consists of the comprehensive functions of element organization,system structure and behavioral subject,and is driven by self-organization.The combined influence of force and his organizational drive.(4)Optimizing the spatial pattern of "production-living-ecological" in Changsha City should take the ecological red line and actively improve the urban ecological space;pay attention to intensive and efficient,scientifically adjust the urban production space;follow the people-oriented,and vigorously optimize the urban living space and other measuresThis paper improves the urban "production-living-ecological" spatial classification system and the "production-living-ecological" spatial identification method,and initially constructs the driving mechanism of the urban "production-living-ecological" spatial pattern change,but the quantitative description of the driving mechanism and the "production-living-ecological" spatial pattern Research on changes in simulation predictions and other aspects needs to be further deepened.