Acta Geographica Sinica ›› 2012, Vol. 67 ›› Issue (2): 157-168.doi: 10.11821/xb201202002

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Spatio-temporal Analysis of Urbanization and Land and Water Resources Efficiency of Oasis Cities in Tarim River Basin

YANG Yu1,2, LIU Yi1, JIN Fengjun1, DONG Wen3, LI Li1   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Xinjiang Institute of Ecology and Geography, CAS, Urumqi, 830011, China
  • Received:2011-04-02 Revised:2011-10-24 Online:2012-02-20 Published:2012-02-20
  • Supported by:
    CASWestern Light Program, No.XBBS200805; National Natural Science Foundationof China, No.40901092

Abstract: This paper examines the spatial pattern of land and water resources as well as urbanization and their interactions in the Tarim River Basin, Xinjiang, China. In order to do so, we extract the data associated with efficiency of land and water resources and urbanization for the years of 1995, 2000, 2005 and 2008. Specifically the paper investigates the extent to which agglomeration of population and economic activities varies geographically and interplays with spatial pattern of resources efficiency through computation of global Moran's I index, Getis-Ord Gi* index and a coordinated development model. The method used provides clear evidence that urbanization, land and water resources efficiency have shown an uneven spatial pattern due to oasis distribution, climate, and initial phase of urban development. Some conclusions can be drawn as follows. (1) Agglomeration and dispersion of urbanization are not consistent with those of land and water resources efficiency. (2) Evolution of the hot and cold spots of urbanization, and land and water resources efficiency, in different trajectories, indicate that there are no significant interactions between them. (3) The evidence that numbers of hot and cold spots of the three factors present varying structures reveals the dominance of unequal urban development in the study area. (4) Significant differences are also found between sub-river basins in terms of the three factors, which is a reflection of the complex physical geography of the area. (5) The degree of development coordination of cities in the Tarim River Basin is generally low in part as a reflection of difference in spatial patterns of the three factors. It is also shown that the pattern of the degree of coordination development is relatively stable compared with evolution of hot and cold spots of the three factors.

Key words: ESDA, Tarim River Basin, oasis cities, land and water resources efficiency, spatio-temporal variation