STAGES AND POTENTIALITY OF WATER RESOURCES DEVELOPMENT INARID NORTHWESTERN CHINA |
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摘 要: |
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收稿时间: | 23 January 1996 |
Stages and potentiality of water resources development in arid northwestern china |
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Authors: | Yaoguang Qu Shimin Ma Jingshi Liu |
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Institution: | (1) Lanzhou Institute of Glaciology and Geocryology, the Chinese Academy of Sciences, 730000 Lanzhou, P.R. China |
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Abstract: | The processes of water resources exploitation and utilization can be divided into three stages by water resources transformation,
and the history, present situation and future trend of water resources development in piedmont areas around high mountains
of arid northwestern China. The three stages are: the stage of surface water development (the first stage), the stage of comprehensive
development of surface and ground water (the second stage) and the stage of economical development of water resources (the
third stage). The three stages link each other and show the law and processes of water resources exploitation and utilization
associated with social and technological progress. The economical water policy should run through the three stages. On this
point, however, the third stage differs from the others, particularly, refering to irrigated agriculture. The third stage
has more progressive significance because it breaks the traditional ideas on water resources development. According to our
investigation and calculation, under present conditions of water resources development, the net used water is about 160 ×
108 m3, accounting for 18% of the total water resources of northwestern China. The water resources have not been fully developed.
If the first stage is finished, the exploitable water can be increased by 91%. After the second stage, furthermore, it can
be increased by 216%.
Supported by the National Natural Science Foundation of China. |
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Keywords: | water resources development water are utilization exploitable water resources channelizable Water resources northeastern China |
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