统计资料结果表明，水面蒸发量呈明显减少趋势。
The statistic shows the amount of evaporation on surface water is decreasing.
并利用不同气候区多站水面蒸发实验资料，确定模型参数。
The model parameters are determined by the water surface evaporation data of many evaporation stations in different climate area.
引起洱海水面蒸发量逐步减少的主要原因是总云量呈增多趋势。
The main reason causing the decrease of evaporation from Erhai Lake is the increase of total cloud cover.
建议使用彭曼公式计算的蒸发能力代替实测水面蒸发以提高拟合效果。
The evaporation capacity calculated by Penman-Monteith formula is suggested to replace the water surface evaporation observed for an improved regression.
新疆降水稀少、蒸发强烈，水面蒸发是河川径流水量损失的主要组成部分。
There are low precipitation and high evaporation in Xinjiang while water surface evaporation main stem from water loss of river runoff.
5干热河谷典型的干热气候致使自由水面蒸发量是饱和土壤蒸发量3.35倍。
The amount of the water surface evaporation was approximately 3.35 times that of the saturated soil evaporation.
洱海水面蒸发随着总云量和相对湿度的增加而减小，随着平均风速和日照时数的增大而增大。
Evaporation from Erhai Lake decreases with the increase of total cloud cover and relative humidity, and it increases with the increase of mean wind speed and sunshine duration.
检验结果表明，该模型对水面蒸发时空变化规律的模拟误差较小，在大范围上具有较强的适应性。
The result of check demonstrate that the model simulated error of evaporation time-space change law is fewer, it have stronger adaptation in big scope.
水面蒸发量为裸地最大，混交林及灌木林能有效减少水面蒸发，减少量较对照裸地可达50.54%和55.20%。
Compared with the bare land, the mixed forest and manual shrubbery can reduce evaporation from water surface 50.54% and 55.20%, respectively.
我国水面蒸发量观测仪器类型很多，通过不断改进，1988年规范规定E- 601型蒸发器为水面蒸发测量的标准仪器。
Through successive improvement, the E-601 type of evaporimeter was stipulated as a standard measuring instrument in China for water-surface evaporation capacity in 1988.
我国水面蒸发量观测仪器类型很多，通过不断改进，1988年规范规定E- 601型蒸发器为水面蒸发测量的标准仪器。
Through successive improvement, the E-601 type of evaporimeter was stipulated as a standard measuring instrument in China for water-surface evaporation capacity in 1988.
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