Study On The Spatial Pattern And Influencing Factors Of Urbanization In Middle Reaches Of The Yangtze River

Nowadays,under the background of global economic,our country's urbanization is the inevitable trend in the development of social economy,and it's the most important way to realize the regional coordinated development,solve the problem of agriculture,rural areas and farmers,and realize the industrial transformation and upgrading.Area in the middle reach of Yangtze river occupies the important geographical location,linking the east and west,the south and the north,contains four provinces,multiple urban agglomeration,the internal environment is complex,the research of the development of the urbanization can promote the China's central rise.In this article,through analyzing the Yangtze river middle reaches area of the internal differences,and from the urbanization rate,the contribution rate of urbanization and the migration of population to compare 346 counties' urbanization space differences in 2000 and 2010.And with the help of ArcGIS software calculates the regional center of gravity to get the trend of urbanization's gravity in the middle reach of Yangtze river,using the spatial autocorrelation analysis the region spatial agglomeration of county unit,through calculating the urbanization development speed at the same time to analyze the dynamic spatial pattern change of county urbanization,reveal spatial pattern change characteristics of urbanization in the region in the middle reach of Yangtze river county,and the using the method of grey correlation analyze the county urbanization influence factors.Finally,basing on the land level units in the middle reaches of the Yangtze river,to analyze the spatial role of economic links,thus judging the spatial pattern of urbanization development in the region in the future.The results show that:(1)The development of county urbanization in the middle reaches of the Yangtze river is not balance,but from 2000 to 2010,it gradually became balanced in space.In 2000,the county in Hubei province urbanization level is relatively high,centered on the space of the municipal district in Wuhan city,and presenting a single center space development pattern,in 2010,the level gap decreases in the county in Hubei province urbanization level and the other three provinces county urbanization,and presenting a polycentric spatial development pattern.In this ten years,the low level of urbanization of the county unit contribution rate of urbanization is higher,the unit of county are mainly distributed in the traffic around the main line,the negative rate of urbanization of the county unit more concentrated in the high level of urbanization in Hubei province.In addition,from 2000 to 2010,the Yangtze river middle reaches area county population loss degree deepening,and active level of population emigration and immigration are on the increase,the population increase liquidity,2000 in Hubei province population move more,but by 2010,more than for the population emigration.(2)The spatial pattern of urbanization in the county areas in the middle reaches of the Yangtze river is gradually equalized.From 2000 to 2010,the overall level of urbanization in the region increased,and the center of gravity of urbanization shifted to the southwest.Through the spatial autocorrelation index calculating,2000 and 2010,the Yangtze river middle reaches area of county urbanization development level of spatial autocorrelation is not obvious,the spatial pattern of micro agglomeration presents weak concentration distribution.There is significant value in either high or low agglomeration phenomenon,in 2000 and 2010,the "hot spot" were present dot distribution,presents the evident in the ring on the space characteristics,that is to say,the "hot spot" scope municipal district is consisted of the provincial capital city and its surrounding county units.From 2000 to 2010,the location of "hot spots" did not move significantly.The 2010's "hot spots" were developed from 2000's.From the urbanization development speed,we can see the area in the middle reach of Yangtze river the urbanization development conforms to the the Chinese central development characteristics,which most of the unit of county urbanization level is low,the development speed is quick,the second is that the low level of urbanization,the development speed is slow.Further from the point of the details of spatial development,rapid development in the Yangtze river middle reaches county unit presents the dotted,southeast of urbanization development speed is significantly higher than the northwest urbanization development speed,the main reason is the traffic location factors,the convenient transportation of county urbanization development speed is quick,convenient transportation of the remote county urbanization development speed is slow.(3)The influencing factors in the middle reach of Yangtze river region's county urbanization are various,one of the most important factor is the level of society consumption,the second is the economic development level,in addition,the farmers' life level,industrial structure,infrastructure,public service,ability of population agglomeration,location traffic also important for the urbanization development.From 2000 to 2010,the influence of economic development level on urbanization has gradually weakened,and the industrialization development has obvious promotion effect on urbanization.(4)The spatial pattern of the urbanization of the middle reaches of the Yangtze river in the future is: the spatial pattern of urbanization from single center to multi-center,and the center of gravity of urbanization is moving southward.In addition,the development of urbanization is centred by the four provincial capital city,and radiating to the surrounding city,driving the development of peripheral city urbanization,the urbanization development level of urban,and the adjacent city of urbanization level is relatively high,so it forms a development structure which urbanization decreases from the center to the periphery.