Spatial differences and polycentric development of population growth in Xi′an city from 2000 to 2010
YIN Jiangbin1*, ZHU Mingming2, FAN Hong3
(1 Center for Land Resources Research in Northwest China, Urbanization and Environmental Simulation Key Laboratory in Northwest China, Shaanxi Normal University, Xi′an 710119, Shaanxi, China;2 College of Urban and Environmental Science, Central China Normal University, Wuhan 430079, Hubei, China;3 School of Computer Science, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)
Abstract:
Using methods such as ArcGIS spatial analysis tools and population density models, the spatial differences and spatial model of population growth, and the law of polycentric development from 2000 to 2010 based on the 5th and 6th census data in Xi′an city were analyzed. The results showed that population increased differently in different rings and directions in Xi′an city.In generally, the population in city-core and ex-urban decreased in high speed, while the population in sub-urban region increased rapidly. Specifically, population in north and south direction increased fast, but the western and eastern areas increased lower. The population in ex-urban decreased rapidly while county towns and other important towns gathered quickly. Based on the regression of monocentric population model, it was found that the Clark model can describe population densities well in both urban area and metropolitan of Xi′an city from 2000 to 2010. Based on regression of multi-nuclear population model,the spatial structures of Xi′an city have been transformed from monocentric spatial structure in 2000 to double-nuclear structure (Zhonglou & Xiaozhailu) in 2010, however, the polycentric structure has not yet appeared.
KeyWords:
Xi′an city; population growth; spatial structure
