| Ecology and Economics |
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| Spatial Structure of Point-axis City Groups on Northern Slope of Tianshan Mountains |
| DILIMULATI·Wushouer1,2, YANG De-gang1, ZHANG Zhong-wu3, TANG Hong1,2, ZHANG Yue-qin3 |
1.Xijiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3.College of Urban and Environment Science, Shanxi Normal University, Linfen 044000, Shanxi, China |
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Abstract Using data of GDP, land, population and communication in northern slope of the Tianshan Mountains during 1990—2007, we analyzed the characteristics of urban spatial distribution, and built estimation model of interaction intensity between oasis cities as well as demonstrated the superiority of city groups point-axis spatial pattern in the region on the basis of nearest neighbor index theory of urban spatial distribution, space interaction and fractal geometry theory. Results show that: (1) Spatial structure of urban population size and economic size in the northern slope of Tianshan Mountain show a spatial pattern of 3 urban concentrated areas and 2 urban scattered areas. (2) There are large differences in each city's acceptance of radiation from central city in the northern slope of Tianshan Mountains because of the traditional spatial structure of oasis cities which is not very beneficial to the development of whole urban system. (3) The point-axis spatial group pattern which takes Urumqi metropolitan area as the development point is of benefit to the radiation of central group urban area to other urban area. (4) The point-axis spatial group pattern which takes "5 groups" as the development point has advantages to interactions between each groups, and urban development as well. (5) The extension of the Northern Slope Economic Belt of Tianshan Mountains to Yili valley is of benefit to the radiation of central group urban area to other urban area.
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Received: 22 March 2011
Published: 20 January 2012
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2012, Vol. 32 
