| 阮本清,韩宇平,蒋任飞,许凤冉.生态脆弱地区适宜节水强度研究[J].水利学报,2008,39(7): |
| 生态脆弱地区适宜节水强度研究 |
| Appropriate water saving extent for ecological vulnerable area |
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| DOI： |
| 中文关键词: 青铜峡灌区 MODFLOW 地下水埋深 节水强度 |
| 英文关键词: Qingtongxia Irrigation Area MODFLOW groundwater depth appropriate water saving extent |
| 基金项目: |
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| 中文摘要: |
| 选择宁夏青铜峡引黄灌区为研究对象，根据确保既不发生盐渍化也不发生荒漠化控制地下水埋深的原则，运用MODFLOW软件，构建了研究区的地下水数值模拟模型。采用情景分析方法，在模拟9种节水灌溉方案地下水埋深的生态适宜性基础上，给出了研究区适宜节水强度推荐方案。推荐方案对应的节水规模为全年引黄水量44.71亿m3，与2000年的60.29亿m3引水量相比，节水强度达到了25.8％,此为该灌区的适宜节水强度。 |
| 英文摘要: |
| The reasonable water saving extent for the Qingtongxia Irrigation Area in Ningxia Hui Autonomous Region is studied by using a numerical model established base on MODFLOW for simulating the groundwater. The study is according to the principle that the groundwater depth must be controlled to a range in which either alkalization of saline soil or desertification will not happen. The ecological suitability of 9 assumed water saving scenarios is evaluated to search the most appropriate water saving extent by using this model. At last, the recommended water diverting quantity from the Yellow River is 44.71×10.8m3 which is less than that diverted in 2000 by 15.58×10.8m3, in other words, the water saving extent is 25.8%. This amount of water saving is compatible to the conditions of this fragile ecology area. |
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