Dynamic Evolution of City Size and Urban Water of Oasis City in Xinjiang
The comprehensive evaluation index system of city size and urban water was constructed, then based on the datum of oasis cities in Xinjiang, entropy method was applied to analyze the dynamic evolution of city size and urban water during 1990-2008, and their relationship was discussed. Results showed that economic size is the most important indicator of city size, and water supply capacity, water consumption and construction of conservancy facilities all reflect the level of urban water. Both city size and urban water of oasis cities have an increasing trend during 1990-2008, but with varied changes in different periods. The relationship curve shows a logarithmic relationship. The expansion of city size promotes its development in early stage, but because of the restriction of water resource, it shows a gentler of fitting curve with the acceleration of urbanization. Water resource should be focused on for rational allocation and intensive use to achieve the harmonious development of urbanization and water utilization.
Keywordscity size urban water dynamic evolution oasis city
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