摘要
蒸散发是地面与大气水分平衡的重要组成部分,现代遥感技术的进步为蒸散发研究在时空尺度上的拓展提供了可能。以辽宁省本溪市为研究区域,对蒸发比法、改进蒸发比法、正弦关系法和天文辐射法等4种蒸散发时间尺度的扩展方法进行了比较,结果显示改进蒸发比法精度较高,具有区域适用性。
Evapotranspiration is an important component of the water balance between the earth and the atmosphere, and the progress of modern remote sensing technology has provided the possibility for the expansion of the research on the spatial and temporal scales. Taking Benxi city Liaoning Province as the study area, the evaporation ratio method and improved evaporation ratio method, sine relation method and the astronomical radiation method of four evapotranspiration temporal upscaling methods were compared. The results show that the improved method is more accurate and has regional applicability.
关键词
蒸散发
本溪市
时间尺度扩展
evapotranspiration
Benxi city
temporal scale upscaling
