| 利用稳定同位素比率估计湖泊的蒸发 |
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| 引用本文： | 章新平,姚檀栋.利用稳定同位素比率估计湖泊的蒸发[J].冰川冻土,1997,19(2):161-166. |
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| 作者姓名： | 章新平 姚檀栋 |
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| 作者单位： | 湖南师范大学资源与环境学系(章新平)，中国科学院兰州冰川冻土研究所(姚檀栋) |
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| 摘 要： | 利用稳定同位素物质平衡方法可以估算湖泊的蒸发，方法的主要特点是不必测定入湖水量，只须测定其稳定同位素比率。文章根据青海湖实测的氧同位素资料和有关水文气象资料，并利用稳定素模型得出，青海湖多年平均蒸发量为８７７ｍｍ，这个值与同一时期９０４．６ｍｍ的实测蒸发量大致相当，不同水体中稳定同位素比的大小对湖蒸发量有不同程度的影响。降水和入湖泊水中的稳定同位素比率与蒸发量存在正比关系；湖泊水和蒸发水中的稳定同
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| 关 键 词： | 稳定同位素 比率估计 湖泊 蒸发 |
Estimation of Lake Evaporation by Stable Isotopic Ratio |
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| Zhang Xinping,and Yao Tandong.Estimation of Lake Evaporation by Stable Isotopic Ratio[J].Journal of Glaciology and Geocryology,1997,19(2):161-166. |
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| Authors: | Zhang Xinping and Yao Tandong |
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| Institution: | Zhang Xinping 1 and Yao Tandong 2 |
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| Abstract: | According to the measured stable isotopic ratio data and relevant hydrometeorological data, the mean annual evaporation, 877 mm, in the Qinghai Lake was calculated by a stable isotopic model The calculated value is basically equivalent to 904 6 mm, measured evaporation during the same period The simulations show that stable isotopic ratios in different natural waters have different impact on lake evaporation, i e , the stable isotopic ratio in precipitaiton and inflows is in proportion to evaporation, and that in lake water or evaporated water is in inverse proportion to evaporation In addition, evaporation increases with temperature over the lake; the increasing range of evaporation is in proportion to that of precipitation |
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| Keywords: | evaporation stable isotopic ratio Qinghai Lake temperature precipitation |
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