| 邢旭光，史文娟，王全九.对常用潜水蒸发经验模型中E0值的探讨[J].干旱地区农业研究,2013,31(4):57~60 |
| 对常用潜水蒸发经验模型中E0值的探讨 |
| Discussion on E0 value in common groundwater evaporation empirical models |
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| DOI：10.7606/j.issn.1000-7601.2013.04.011 |
| 中文关键词: 潜水蒸发 经验模型 水面蒸发 土面蒸发 |
| 英文关键词:groundwater evaporation empirical model evaporation of water surface evaporation of soil surface |
| 基金项目:国家重点基础研究计划(973计划)(2011CB411903)；水利部公益性行业科研专项经费项目(201301102)；新疆维吾尔自治区科技计划项目(201130103-3)；陕西省自然科学基础研究计划项目（S2012JC7610）；陕西省教育厅基金（11JS076） |
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| 中文摘要: |
| 为提高潜水蒸发计算精度，利用潜水蒸发强度、埋深为零时的土面蒸发强度和水面蒸发强度的实测资料对阿维里扬诺夫公式、叶水庭公式和雷志栋公式中E0值的选取进行了探讨，同时对比分析了E0分别为水面蒸发强度和埋深为零时土面蒸发强度两种情况下的潜水蒸发强度。结果表明，针对新疆地区粘壤土类型，对于上述三种公式，若用埋深为零的土面蒸发强度代替水面蒸发强度，计算结果会产生误差，精度偏低，应选用E0为水面蒸发强度进行计算，获得了η与地下水埋深的指数函数关系。该研究为潜水蒸发经验模型中E0值的选取提供参考，同时为求解雷志栋公式中参数η提供一种新方法。 |
| 英文摘要: |
| The evaporation rate of water surface (expressed with E0) is contained in the common empirical models of groundwater evaporation, which can be replaced by the evaporation rate of soil surface at groundwater depth of zero. Measured data of groundwater evaporation rate, evaporation rate of soil surface at groundwater depth of zero and evaporation rate of water surface were used to made a discussion on the selection of E0 value in Averiyanov equation, Ye equation and Lei equation, so as to improve the accuracy of calculation. Meanwhile, the groundwater vaporation rate was compared under the two conditions in which E0 was the evaporation rate of water surface and the evaporation rate of soil surface at groundwater depth of zero, respectively. The results turned to be that, in the light of clay loam in Xinjiang, some calculation error would be caused if the evaporation rate of soil surface at groundwater depth of zero were used instead of the evaporation rate of water surface as for the above three equations. So it was suggested that the evaporation rate of water surface be used as E0, and an exponential function relationship between η and groundwater table was obtained. The study results may provide references for the selection of E0 in the empirical models of phreatic evaporation, and offer a new method for calculating the parameter η in Lei equation. |
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