三峡库区巴东站水面蒸发变化规律探究

Exploration on the Variation Law of Water Surface Evaporation at Badong Station in the Three Gorges Reservoir

摘要: 为探求三峡库区大型水体水面蒸发量的变化规律及水体损失，通过对位于三峡库区的巴东漂浮水面蒸发实验站八年实测数据进行对比分析，发现陆上蒸发量与漂浮蒸发量的变化规律独特而且稳定、水面蒸发量的年际变化与气温、相对湿度的变化息息相关。本文对巴东漂浮水面蒸发实验站水面蒸发变化规律做了总结，揭示了三峡库区水面蒸发呈现独特且重复性变化规律的主要影响因素是水库水温，研究成果为计算三峡库区水面蒸发量、准确评估库区水量损失提供了技术支撑。

Abstract: To explore the change law of the water evaporation and water loss at large water body in the Three Gorges Reservoir, eight-year actual measurement data of the Badong Floating Water Surface Evaporation Experimental Station was used for comparative analysis. It was found that the variation regularity of land evaporation and floating evaporation is unique and stable, and the inter-annual change of water surface evaporation is closely related to the change of temperature and relative humidity. This paper summarized the variation law of water evaporation in Badong experimental station, and revealed that the water temperature of the reservoir is the main factor which present a unique and repetitive change law, providing technical support for the calculation of water evaporation and accurate assessment of water loss in the area.