| Territorial space is an important carrier of the natural ecosystem and socio-economic system.Optimizing the layout of the territorial space is an important measure to advance the construction of our country’s ecological civilization,the reform of the spatial planning system and the implementation of the carbon peak in2030 and the smooth progress of carbon neutrality in 2060.Also,it’s a major strategic issue for sustainable and high-quality social and economic development.Since the reform and opening up in 1978,the process of industrialization and urbanization in our country has been advancing rapidly,and the level of economic development and people’s living standards have improved significantly.However,the problems of ecological environment and resource protection have become more and more serious,the increasingly prominent contradiction between the land space development.The "Several Opinions of the Central Committee of the Communist Party of China and the State Council on Establishing a Territorial and Spatial Planning System and Supervising Implementation" issued in 2019 emphasized the need for scientific layout of production space,living space,and ecological space;the opinions are aimed at achieving coordinated development and scientific optimization of the production,living and ecological space(PLES)and promoting high-quality protection and development of land and space.Therefore,how to improve the quality of territorial space development and land use efficiency,optimizing the pattern of territorial space development and protection,these are major issues facing the development and sustainable utilization of territorial space.According to this,this article is based on the connotation of the PLES theory,following the logical idea of "spatial classification-spatial recognition-pattern optimization",selecting Shangli County in Jiangxi Province as the research object,drawing lessons from the theory of mesoscale transfer effects in ecology and geography,on the basis of the township-scale multi-functional evaluation and grid-scale suitability evaluation,the multi-scale joint division of the county PLES,to analyze the functional dominant characteristics of the PLES;according to the strength of the dominant function,the dominant function is general obviously and below areas,the comparative advantage model is introduced to quantitatively analyze and discriminate the spatial advantage functions of the PLES.According to the comparative advantage index combined with local planning goals,coordinate the spatial quantity ratio and spatial layout of the PLES,which is the scientific compilation and analysis of territorial spatial planning.Provide reference for the sustainable use of territorial space.Through research,the main conclusions of this paper are as follows:(1)In 2013 and 2019,the various functional levels of Shangli County have a large gap between different townships.From 2013 to 2019,the living functions and non-agricultural production functions of all towns and villages in the county have generally improved,and the two have strong synergy,and their spatial distribution is positively correlated with the distribution of public service facilities and infrastructure;the areas where ecological functions and agricultural production functions decline are related to The areas where living functions and non-agricultural production functions have risen are more consistent,reflecting the characteristics of functional trade-offs in townships;some areas are affected by topography and resource endowment conditions,and ecological functions and agricultural production functions have been improved.(2)Judging from the preliminary division results and spatial relevance of the PLES in Shangli County,the ecological space is mainly distributed in the middle,northeast and southwest of the county,and the agricultural production space is mainly distributed in the south and middle north of the county.The non-agricultural production space and life the spatial distribution is similar,with more concentrated distribution in the main urban areas of the northern counties and the southern economic development zone.According to the results of the global spatial autocorrelation measurement,all types of spaces in Shangli County have significant positive spatial correlation and spatial agglomeration characteristics,that is,the grid units of high-value and low-value areas of suitability of various spaces have strong spatially Relevance.(3)Based on the spatial suitability of the PLES,the dominant characteristics of the PLES function in Shangli County are analyzed.On the whole,the various levels of the PLES dominant function in Shangli County are more evenly distributed in area,generally obvious and obvious.The area of the following levels accounted for 39.96%,most of the territorial space functions are dominant.After the space optimization,the planning goal of Shangli County in 2025 can be better met.However,Shangli County needs to return farmland to forests to ensure that the ecological space meets the planning goals.The living space and non-agricultural production space also need to strengthen intensive and economical utilization,rationally control the scale,and the agricultural production space better meets the planning goals. |
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