陕西省水面蒸发变化特性分析

蒸发是大气水循环中的的一重要环节。水面蒸发反映了在充分供水情况下的蒸发量，其值大小取决于当地气温、饱和差、风速等气象因子。通过对陕西省实测水面蒸发量资料进行定性和定量分析，揭示了陕西省的近期水面蒸发的地区分布差异、年内分配及其变化趋势等特性。为陕西水工程规划设计，流域水量平衡研究、水资源评价、生态需水计算时参考。

Analysis of the Characteristics of Water Surface Evaporation in Shaanxi Province

The evaporation of water in the atmosphere is of a crucial part. Water surface evaporation reflects the full evaporation of the water supply capacity, and its value depends on the local temperature, saturation deficit, wind speed and other meteorological factors. On the basis of qualitative and quantitative analysis of water surface evaporation data of Shaanxi Province, the recent geographical distribution differences of water surface evaporation of Shaanxi Province, changes during the year, and trends in the distribution of characteristics are presented, which provides reference for Shaanxi water project planning and design, watershed water balance studies, water resources assessment, calculation of ecological water requirement.