| 水文与水资源 |
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| Bitter-Salty Water Resources Amount and its Distribution in Gansu Province |
| WANG Shuang-he1, HU Xing-lin1,2, LAN Yong-chao1, WANG Jing1, DING Zai-sheng1 |
| 1.Hydrology and Water Resources Bureau of Gansu Province, Lanzhou 730000, China; 2.Heihe Laboratory of Ecohydrology and Integrated Basin Management, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract Based on the historical measured data of water resources, the authors evaluated the bitter-salty water resources in Gansu province. Some characteristics such as the bitter-salty water resources quantity, regional distribution, proportion to the provincial total, and suffered population, were analyzed. Its regional distribution has close relation with precipitation, evaporation and arid index. The isoline of 430 mm precipitation could be regarded as the dividing line between fresh water and bitter-salty water on the Loess Plateau. A box conceptual model about water-salt balance in closed basin was established, from which a mathematical model about water salinity evolution in space-time has been deduced. The model can disclose the law of runoff salinity evolution in space-time in the arid and semi-arid small river basin on Loess Plateau, and the result can guide the bitter-salty water treatment and water resources development.
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Received: 08 January 2009
Published: 07 September 2009
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2009, Vol. 29 
