Analysis Of The Temporal And Spatial Changes And Driving Factors Of Residential Areas In Mengjin County

With the rapid development of urbanization in China,the area of urban land has increased significantly,the demand for land has been increasing,and the contradiction between land supply and demand has become increasingly prominent.On the one hand,the efficiency of land resource utilization in towns and townships is low,and hollow villages and idle homesteads generally exist.On the other hand,the area of villages is expanding rapidly,and the lack of unified and reasonable planning for settlements is a waste of land resources.Fully understanding the distribution characteristics,spatial-temporal changes and influencing factors of settlements in towns and counties in counties and towns has important practical significance for the economical use and space optimization of land use resources in towns and counties in counties.This article takes Mengjin County,Henan Province as the research area,and uses high-scoring image data,DEM data,and road network data as basic data support in 2000,2010,and 2018.First,analysis tools such as ArcGIS,Fragstats,and geographic detectors are used to analyze the spatial pattern and evolution of plaques in residential areas from county to township.Then,the plaques of residential areas are superimposed with such factors as elevation,slope,distance from roads and town centers,and the influencing factors and evolution mechanisms of plaque changes in residential areas are analyzed.Through research,the following conclusions can be obtained:At the county scale:(1)Phenomenon of plaque merger in residential areas of Mengjin County is remarkable.With time,the number of plaques showed an accelerated decrease trend,and the area of plaques showed an accelerated increase trend.(2)The spatial distribution of residential areas in the county is uneven,and it has the characteristics of local aggregation and overall dispersion.County settlements are mostly concentrated in the town center,the central and eastern areas have obvious clustering effects.The average nearest distance of the whole plaques in the county area increased,the distance between the plaques became farther and farther,and the distribution of the whole plaques became scattered.(3)The evolution of the plaque morphology of settlements within the county shows a complex and changing trend.The overall expansion method of residential plaques is dominated by "complex endogenous growth",and the irregularity of new plaques formed by merging new plaques and adjacent plaques has increased.At the township scale:(1)The scale of settlements in various towns and townships has changed significantly,and different townships have different types of evolution.The plaques of township settlements in the west and north showed the characteristics of high-quantity changes and low-area growth.Plaques in towns and townships in the eastern and southeastern regions show low-quantity changes and high-area growth.The change of plaques in towns and townships in the central and southern parts showed a "double-high" trend,with a large change in number and a large increase in area.(2)In the evolution of the distribution of township settlements,the trend of dispersion and agglomeration coexist,and the difference between different townships is obvious.Residential areas in Chengguan Town,Chaoyang Town and Changdai Town continued to be discretized.The residential areas of Huimeng Town,Songzhuang Town and Hengshui Town continue to gather.The residential areas of Baihe Town,Pingle Town and Xiaolangdi Town have changed from agglomeration to discrete.The settlements of Matun Town changed from discretization to agglomeration.(3)The complication and regularization of plaque morphology of township settlements coexist,and the difference between townships is significant.The plaque morphology of residential areas in Chengguan Town,Huimeng Town,Matun Town and Changdai Town has always maintained a complex trend.The plaque morphology of Hengshui Town continued to be regularized.The plaque morphology of Baihe Town,Pingle Town and Xiaolangdi Town changed from complex to regular.The plaque morphology of Songzhuang Town and Chaoyang Town changed from regular to complex.The driving mechanism of the spatial and temporal changes of the residential areas of Mengjin County in different periods is different.From 2000 to 2010,the movement of employees and the reduction of the agricultural population were the internal driving forces for the change of settlements in Mengjin County.At the same time,the rapid development of the tertiary industry in the township centers also promoted the rapid expansion of settlements in the nearby areas.From 2010 to 2018,the growth of the total population is the main internal driving force for the evolution of settlements.At the same time,the improvement of the material living standards of urban and rural residents has also pushed settlements to move closer to township centers with more developed economies and better medical conditions.On the whole,the movement of employees and the growth of permanent population are the main internal driving forces for the change of settlements in Mengjin County.The rapid development of the tertiary industry in township centers is the main factor that attracts the expansion of surrounding settlements.