Study On The Evolution Of Spatio-Temporal Pattern Of Correlation Coupling Of "Park-Population"System In Jiangsu Province

Under the background of "people-centered",scientific research on the interaction between park system and population system is the key to improve the level of urban livable environment and promote the high-quality development of the city.The park and population are brought into the unified system framework,and the urban "park-population" system is constructed.Taking 34 cities at county level and above in Jiangsu Province as the research unit,grey relational analysis method and coupling coordination degree model are introduced to depict the spatio-temporal pattern characteristics of the comprehensive development level and correlation degree of park and population system and the coupling and coordination of "park-population" system from 2000 to 2018,respectively.Based on the analysis of their internal interaction mechanism.Further judge whether the development of the "park-population" system is good or not,scientifically judge its coupling and coordinated development level,and put forward the optimization countermeasures for the orderly and coordinated development of park and population,in order to provide new ideas and reference for the high-quality integrated development and practical application of park and population in the process of urban green transformation.The main conclusions are as follows:The main results are as follows:(1)based on the comprehensive development level of park and population system from 2000 to 2018: during the study period,the development of the two systems experienced "park-led high-quality development" antagonistic development stage "population-led steady growth stage".The response sensitivity of the park to population development is poor,and the contradiction between the development of the two systems continues to intensify.(2)spatially,the three regions and two systems show the development trend of "southern Jiangsu > northern Jiangsu > central Jiangsu".Southern Jiangsu maintains its advantages,and the spatial characteristics of "central depression" are obvious.the total amount and service level are the main reasons for the differences in the development of regional park system.scale and living standards are the key factors restricting the development of population system.(2)based on the grey relational analysis method,this paper quantitatively analyzes the interactive relationship and internal interaction mechanism between the park and the population system from the two dimensions of time and space.Sequence at 1: 00: the park maintains a "medium-high" relationship with the population.From the perspective of the park,the development model of "incremental quality improvement" has gradually formed,which has changed from the early scale drive to the service level drive,and the pattern needs to be further optimized;from the population perspective,living standards have always been the main driving force.the improvement of the quality of life directly promotes the development of the park,and the structural driving force is weak.(2)in space,the correlation degree of the three regions as a whole remains "Northern Jiangsu > Central Jiangsu > Southern Jiangsu".From the perspective of the park,central and northern Jiangsu is still mainly driven by scale,and the service level lowers the overall efficiency;the service level of southern Jiangsu plays the most significant role in promoting the service level,and the influence of the pattern is weak;from the perspective of population,the impact of population living standards in the three major areas on the park continues to be significant,the positive feedback of the structure of southern and central Jiangsu is weak,and the effect of population size in northern Jiangsu is relatively small.(3)through the coupling coordination degree model,this paper further explores whether the two systems are in benign interaction,and reveals the type of coupling coordinated development and the law of spatial evolution from the two aspects of time and space.The main results are as follows: 1 from the coupling coordination characteristics of the "park-population" system: time sequence characteristics: during the study period,it has experienced the transformation of "barely coordinated" on the verge of maladjustment,and most cities are still in the transitional antagonistic stage.Spatial pattern: the coupling coordination degree shows the development law of "southern Jiangsu > northern Jiangsu >central Jiangsu",and the high value is mainly concentrated in the three metropolitan areas and their surrounding cities.(2)generally speaking,the coupling coordination of "park-population" system has a certain "circle layer + axis" structure in space.Among them,the circle layer is a "three-circle layer" structure composed of Nanjing,Suzhou-Wuxi-Changzhou and Xuzhou metropolitan areas,and the axis structure refers to the four cities in southern Jiangsu(Suzhou-Wuxi-Changzhen)along the Shanghai-Nanjing Railway,forming an obvious "gradient axis".Aiming at the interactive relationship between park and population,this paper constructs the "park-population" system,comprehensively explores the development level and internal interaction mechanism of park and population system,and uses the research method of grey correlation and coupling coordination.it can comprehensively reveal the "deficiency" of system development from the outside to the inside and from the inside to the outside,and put forward optimization suggestions.Taking Jiangsu Province,where the urban development is more mature,as the research object,it can play an exemplary role for other regions.