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| DOI：10.13522/j.cnki.ggps.2017.0366 |
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| Calculating Ecological Demand of Upland Wetlands for Water Using the Ecological-Water-Level Difference Method: Taking Wuliangsuhai Wetland as an Example |
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ZHAO Xiaoyu, YANG Peiling, REN Shumei, ZHANG Zhenlin
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China Agricultural University, Beijing 100083, China;The Second Water Conservancy And Hydropower Survey & Design Institute Of Hebei Province, Shijiazhuang 050021, China; Hebei Water Affairs Group, Shijiazhuang 050011, China
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| Abstract: |
| 【Objective】 The purpose of this work is to present an improved method to calculate ecological demand of high-altitude wetlands for water. 【Method】 We took Wuliangsuhai Wetland as an demonstrative example and used the ecological water-level difference method to overcome the problems of non-sensitivity and low accuracy faced by other methods used previously to calculate ecological demands of wetlands for water. 【Result】①The minimum and proper coefficients of the water-level difference calculated for the Wuliangsuhai wetland were 0.786 and 1.213 respectively; the minimum and proper ecological water demands of the wetland were 56.45 million cubic meters and 75.80 million cubic meters respectively. ②The water available for ecological use in Wuliangsuhai was 46.8~68.5 million cubic meters. 【Conclusion】 The improved ecological water-level difference method proposed in this paper can be used to help design decontamination of wetlands, and is capable of calculating ecological water demands of wetlands, especially high-altitude wetlands similar to the Wuliangsuhai wetland. |
| Key words: Wuliangsuhai; ecological water difference method; ecological water requirement; ecological water supplement |
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