Urbanization And Ecological Response In Anhui Province

Urban population,land and ecological environment are three important aspects to measure the quality of urbanization.It is of great significance to study the degree of coupling and coordinated development and its driving factors for realizing new urbanization and rural revitalization.At present,the research on the coupling and coordination of urbanization system is mostly concentrated in the eastern developed areas and the northwest underdeveloped areas,and the related research in the central provinces remains to be further studied.Based on statistical data,remote sensing data of construction land,nighttime lighting data,NDVI and other multivariate data,this study uses allometric growth model,rate coordination model and coupling coordination model combined with GIS technology to analyze the intensive land use,the rate coordination degree of population urbanization and land urbanization,the coupling coordination degree of population and land urbanization,and the coupling coordination relationship between urbanization and ecological environment in Anhui Province from 2000 to 2018(some deadline points are 2015 and 2017).Relevant indicators were selected to analyze the influencing factors of population urbanization and land urbanization by geographical weighted regression,and the driving factors and double factor interaction of the coupling development degree of the two were detected by geographical detectors.The research contents and main results of this study are as follows:(1)The average annual growth rate of population urbanization in Anhui Province is 2.87%,and the average annual growth rate of land urbanization is 7.05%.Population urbanization has long lagged behind land urbanization.Geographically weighted regression results show that the main influencing factors of population urbanization are economic development,industrial upgrading,urban land expansion and population density weakening.The main influencing factors of land urbanization are:investment,population and consumption are positively promoted,and the development of service industry is inhibited.By regulating the main influencing factors of the two can promote population urbanization or weaken the role of land urbanization,so that the two reach a more coordinated level.The regional development of Anhui Province is very uneven.The urbanization level of population and land in Hefei,Wuhu and other cities is high.It is a high density and hot spot area for the expansion of construction land.Most of the population and the scale of urban construction land in small and medium-sized cities are still at a low level,and the siphon effect of big cities is relatively serious.(2)The coupling coordination of population urbanization and land urbanization in Anhui Province increased by 0.28 and 0.11 respectively from 2007 to 2017,and its increased rapidly after 2008.There are obvious spatial differences in the coordinated development of population and land.The degree of intensive land use and the coordinated development of human-land coupling are subject to topographic factors and administrative divisions to a certain extent.The coordination degree of coupling degree shows strong spatial autocorrelation.There are low-low aggregation areas in southern Anhui and high-high aggregation areas in central Anhui.Geodetector results show that the main driving factors of population urbanization and land urbanization coupling are population,land and slope,and the interaction types between influencing factors are enhanced.The interaction between socio-economic factors and land urbanization is greater than that between natural geographical factors.Land urbanization,population density and corresponding socio-economic factors play a leading role in the coupling development of population urbanization and land urbanization.(3)The vegetation coverage and ecological value of the external urban areas in Anhui Province are generally better.The urban construction area is the main area of vegetation and ecological value decline.The urbanization process has a great influence on the vegetation in high and high areas.Land urbanization rate was negatively correlated with mean NDVI and mean ecological value.The disturbance of urbanization on the internal ecological value of the city is greater than that of the external region.It fluctuates in the middle year,and the change characteristics are different in different years and regions.From 2000 to 2015,the coupling development degree of urbanization and ecological environment improved significantly,and the improvement of coordination degree was limited.The coupling and coordinated development degree of urbanization and ecological environment was limited by administrative divisions to some extent.Figure[43]table[16]reference[104]...