The Evolution Of The Spatial Structure Of "Three Lives" In Kunming And Its Dynamic Response To The Intensity Of Human Activities

As the capital city of Yunnan Province and the core area of the development of the central Yunnan urban agglomeration,Kunming has been developing rapidly in recent years with the rapid development of urbanization and industrialization,and while making great economic achievements,the degree of interference of human activities on the land and space has continued to increase,the contradiction between man and land has become increasingly prominent.This article focuses on the "Ecology-production-living" space.From the perspective of time and space,the county and city areas are used as research units to study the spatial and temporal characteristics of Kunming's "Ecology-production-living" space and the intensity of human activities at multiple scales,as well as the relationship between the two.The districts and counties of Kunming provide a theoretical basis for the overall planning of the spatial layout of the "Ecology-production-living" and the coordination of the "Ecology-production-living" functions,so as to realize the sustainable development of land resources.This article first uses the dynamic model,the center of gravity migration model,the transfer matrix and the geo-information map to analyze and study the structural characteristics of Kunming's "Ecology-production-living" space,and explore the process and law of its spatial structure evolution.Secondly,it analyzes the distribution and evolution characteristics of different terrain gradients such as elevation,slope and undulation of the land used in each "Ecology-production-living" space.Finally,using the landscape pattern index model,location entropy,Lorentz curve,Gini coefficient,human activity intensity measurement model and correlation analysis models,from the perspectives of the county and city areas,it analyzes the spatial and temporal characteristics of Kunming's "Ecology-production-living" spatial structure and its dynamic response to the intensity of human activities.Research indicates:(1)From 2009 to 2015,Kunming's "Ecology-production-living" space,with the exception of agricultural production space,water ecological space and other ecological space,showed a decreasing trend,the remaining spatial land has increased to varying degrees,and all types The range of changes in land use varies greatly,among which the largest changes are other ecological spaces and green spaces,while the water ecological spaces remain basically unchanged.(2)There is a big gap in the shift of the center of gravity of various "Ecology-production-living" space in Kunming.Among them,the other ecological spaces have the largest center of gravity migration;the green space ecological space is the second,and the water ecological space has the smallest migration distance.(3)From the analysis of the transfer matrix and the geoscience information map,it can be seen that,except for agricultural production space,water ecological space,and other ecological spaces,the transfer-in area of other types of spaces in Kunming's "Ecology-production-living" space is larger than the transfer-out area.The main types of changes are other ecological space ? green space ecological space,agricultural production space ? urban living space and agricultural production space ? industrial and mining production space.(4)By analyzing the distribution characteristics of the "Ecology-production-living" space space on different terrain gradients,the following conclusions are drawn: On the elevation gradient,the land for the "Ecology-production-living" space is mainly distributed in the1500-2500 m altitude area,especially green space and other ecological spaces.It is more distributed in higher altitude areas than other spaces.In terms of the undulation gradient,the production space is more inclined to the gradient below the middle undulation gradient;the dominant area of the living space is on the low undulation and middle-low undulation gradient,and the urban living space tends to expand in the low-undulation zone;the green space in the ecological space Ecological space prefers medium-low and medium-undulating areas,water ecological spaces are concentrated in low-undulating gradients,other ecological spaces are less distributed on low-undulating ladders,and the selectivity of each ladder is equivalent,even in extremely high-undulating areas There are also a large number of distributions.(5)From 2009 to 2015,the regional advantage of production space in most counties of Kunming City remained relatively stable,with small changes in location entropy,and areas with higher location entropy were located in areas with relatively flat terrain and better economic and transportation development in Kunming.Among them,Shilin Yi Autonomous County has the highest location entropy;the location entropy of living space changes more than that of production and ecological spaces.The areas with higher location entropy of living space are mainly the main urban area,and the surrounding urbanization and economic levels are higher.area.In the analysis of the Lorentz curve,the Lorentz curve of the living space deviates greatly from the absolute uniform line,indicating that the living space in Kunming is poorly balanced;the areas with high ecological space location entropy are mainly located in the northern topography of Kunming Complex area;Gini coefficient analysis shows that the Gini coefficient of Kunming's living space is greater than 0.4,while the production space and ecological space are both less than 0.3,indicating that the production and ecological spatial distribution of all counties in Kunming is even,while the living space distribution is relatively uneven,And the Gini coefficients of the "three births" space show an increasing trend,indicating that its distribution is becoming more and more uneven.(6)In terms of spatial distribution,the intensity of human activities in Kunming presents an irregular decrease from south to north,and the calculated correlation coefficient of human activity intensity shows that the intensity of human activity is related to the diversity index and the evenness index.It is positively correlated and negatively correlated with the concentration index and dominance index.However,through the analysis of the intensity of human activities and various landscape indexes,it is found that although the intensity of human activities in Kunming City has been increasing over time,its concentration index and dominance index are also increasing,which is mainly due to Kunming's topography and landforms have always occupied a relatively high proportion of the ecological space of green land such as forests,which is caused by significant regional advantages.