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Volume 21 Issue 5
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SUN Cai-zhi, CHEN Li-xin, LIU Yu-yu. Spatial and temporal variation of crops green water occupancy index in China[J]. Advances in Water Science, 2010, 21(5): 637-643.
Citation: SUN Cai-zhi, CHEN Li-xin, LIU Yu-yu. Spatial and temporal variation of crops green water occupancy index in China[J]. Advances in Water Science, 2010, 21(5): 637-643.
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Spatial and temporal variation of crops green water occupancy index in China

  • 1.

    Urban and Environment College of Liaoning Normal University, Dalian 116029, China;

  • 2.

    Liaoning Key Laboratory of Physical Geography and Geomatics, Liaoning Normal University, Dalian 116029, China

Funds: The study is financially supported by the National Natural Science Foundation of China(No.40501013).
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  • Received Date: July 05, 2009
    Graphical Abstract
    • Abstract
  • A crop green water occupancy index(CGWOI) is constructed on the crop green water consumption.Values of the CGWOI are calculated for all the 31 provinces of China from 1997 to 2007.The spatial autoco rrelation analysis is carried out to study the spatial and temporal variation of CGWOI.The result reveals that high values of CGWOI are in Chinas' Huang-Huai-Hai region,while regions with low CGWOI values are found in the west. The clustering phenomenon is clearly evident in the earlier spatial distributions of CGWOI.However,the weakening significance of the phenomenon has been dominated in the distributions.Combining results of both spatial and local autocorrelation analysis,the regularity of CGWOI spatial and temporal variations for the 31 provinces from 1997 to 2007 is also studied and discussed.
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    • References (13)
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