| Simulation analysis on the regulation of overflow ecological water consumption in arid areas——A case study in the Canmrik ecological area of the mainstream zone of the Tarim River |
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| 作者单位： | CHEN Xi（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ;
HUANG Yue（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
QIAN Jing（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Hong Kong Baptist University, Hong Kong, China） ;
LIU HaiLong（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
FENG XianWei（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
LIU Ying（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
BAO AnMing（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ;
WANG WeiSheng（Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ; |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No. 40571030)，the World Bank and China’s National Key Project (Grant Nos. TTTQ-216 and TTTQ-218) |
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| 摘 要： | After analyzing the regulation of overflow ecological water consumption in the Canmrik ecological area of mainstream zone of the Tarim River, in this paper a model of ecological bifurcation is developed, the dynamic overflow process of ecological bifurcation is simulated, and the quantitative relationships between the volume of ecological water consumption and the ecological conservation extent and overflow time are analyzed using GIS, advance of freshet and RS means. The results reveal that the effects of discharge and time of ecological bifurcation on the efficiency of ecological water consump-tion are significant, there is a geometrical exponential relationship between the efficiency of ecological bifurcation and the water supply with different discharges and different times under the same eco-logical water consumption, hypsography plays an important role in ecological water consumption, the regulation of ecological water consumption cannot be equated with the ordinary farming irrigation system, a serious water waste will result and the prospective ecological benefits will not be able to be achieved if an ordinary ecological bifurcation is implemented. The efficiency of ecological water con-sumption can be increased by 30% by selecting the bifurcation schemes in an optimized way, which is of the utmost importance for arid areas with shortage of water resources.
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