Stydy On The Temporal And Spatial Characteristics Of Industrial Land Transformation In Coal Resource-Exhausted City

As a basic means of production and labor object,land carries the main socio-economic activities of human beings,and the transformation of land use is closely related to the economic and social transformation of cities.Industrial land,as the leading land in resource cities,has a significant impact on the change of land use patterns in resource-depleted cities.Pingxiang City,Jiangxi Province,is one of the first pilot cities in China for resource-depleted city transformation,and the depletion of coal resources has brought many problems to the city that need to be solved.Therefore,based on the high-precision remote sensing image data of Pingxiang City from 2003 to 2017,this study constructs an Industrial land use transformation evaluation index system,analyzes the temporal and spatial characteristics of Industrial land use transformation from both explicit morphological,implicit morphological and Comprehensive transformation,measures the transformation level of resource-depleted cities and analyzes the coupling and coordination between the two using the coupling and coordination model,in order to provide a comprehensive analysis of the transformation period.To provide a scientific basis for the sustainable development of resource-depleted cities and the rational use of Industrial land,the study found that as below:(1)Analysis of the characteristics of the transformation of the dominant pattern of Industrial lands①The area of Industrial land and industrial waste land decreased in general from 2003 to 2017,and Industrial land always showed a decreasing trend,but industrial waste land showed a decrease first and then an increase.The transfer matrix shows that the new area of Industrial land mainly comes from garden land,and industrial waste land mainly comes from Industrial land.②The changes in the transition level of each township can be roughly divided into two categories:the towns of Qingshan,Huyao,Maashan and Chishan are rising first and then decreasing,while the towns of Jinshan,Chishan,La-shi,Main City,Anyuan,Nankeng and Fanglou are decreasing first and then increasing,and the number of Industrial land is the main influencing factor.③The relative spatial distribution density of the dominant pattern of Industrial land transition indexes in the study period varies greatly,showing a trend of gradual contraction centered in the central region,with an obvious trend of distribution concentration;and overall showing high-high positive spatial correlation,indicating that towns with higher levels of transition are spatially close to each other and influence each other.(2)Analysis of the transformation characteristics of the hidden pattern of Industrial land①The towns with a higher level of hidden transformation are mainly distributed in the central region with a better economic base and better conditions,while the towns with a lower level are mostly distributed in the peripheral areas away from the town centers.The analysis shows that economic and social functions are the main influencing factors of invisible morphological transformation,and the effect of ecological function is not obvious.②The center of high density of the invisible morphological index is always in the state of continuous shifting,and because the number and structure of industrial use changes are the basis of its functional changes,the index has roughly the same spatial autocorrelation characteristics as the explicit morphological transition index.(3)Analysis of the comprehensive transformation characteristics of Industrial land①The comprehensive index of transformation varies significantly,with a wide range of fluctuations,with the output value of coal mining and washing and processing and the area of Industrial land being the main and secondary factors influencing the level of comprehensive transformation.②The relative spatial distribution density of the composite index varies greatly,and the overall index is characterized by drastic changes centered on the central region,with the explicit transformation of Industrial land as the main influencing factor;the index is consistent with the spatial autocorrelation distribution of the explicit and implicit transformation.(4)Coupled coordination analysis①The level of urban transformation in Pingxiang City is fluctuating and rising,reaching the stage of successful transformation by 2017,with the period from 2003 to 2008 being the most significant period of change.During the study period,the level of urban transformation developed from an overall low level in the early stage to a higher level.②In 2017,the coupling and coordination of the three aspects of explicit morphological transformation and urban transformation,hidden morphological transformation and urban transformation,and comprehensive transformation and urban transformation in Pingxiang City were all in the grinding stage,and the coupling level of the three aspects basically showed a fluctuating and rising trend.On the whole,the coupling and coordination level of the integrated transformation of Industrial land and the transformation of resource-depleted cities is high,and the development of the two is basically consistent and there is a continuing trend in the right direction.