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《Scientia Geographica Sinica》 2011-03
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Spatial Distribution of Road Density in Chongqing Based on GIS

FAN Ke-Hong1,2,LI Yang-Bing2,FENG Yong-Li1,2 (1.College of Geographical Science,Chongqing Normal University,Chongqing 400047,China;2.The Key Laboratory of GIS Application Research,Chongqing Normal University,Chongqing 400047,China)  
Transport is bonds and bridges of geo-spatial and socio-economic activities.Based on the road network of Chongqing,spatial discrepancy of regional road density distribution was investigated using the ArcGIS superposition analysis and exploratory spatial data analysis.Further more,correlation analyses and discussions on the distribution differences of the road density of each counties and districs was made from the economic,terrain,land use of urban construction and the desity of population.The results showed that: the spatial distribution of road density in the counties and districts of Chongqing in 2006 has obvious clustering features,and showed two obvious areas features,the western area,Yuzhong,Sandbar,Jiulongpo′s road density is high,while the north-east of the city in Chengkou,southeastern in Fengdu is low,which revealed the unbalanced nature of road density in Chongqing;the road density in partly counties is high,which was obviously different from the surrounding area,but they have not been connected as a network or completely homogenized,including the western Tongliang area,southeast of Fengdu and other counties;the spatial distribution of the different grades of road density is not the same;and through studies of correlation analyses between road density and terrain,economy,population density,the land use for urban construction,those are found that the distribution pattern of the road density in Chongqing generally is spatial co-relationship with its terrain and topography,agrees with the GDP development and population density of each county in Chongqing City,and accelerates the expansion of urban construction land outside.
【Fund】: 重庆市自然科学基金项目(CSTC 2010BB0322);; 重庆师范大学校级基金项目(08XLZ12);; 国家自然科学基金项目(40361004)资助
【CateGory Index】: P208;U491
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