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首页> 外文会议>PIAGENG 2013: intelligent information, control, and communication technology for agricultural engineering >Measurement of surface albedo and its environmental effects over a temperate desert steppe
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Measurement of surface albedo and its environmental effects over a temperate desert steppe

机译：温带荒漠草原表面反照率的测量及其对环境的影响

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摘要

The albedo is an important factor of the earth's climate system, and also is a key input parameter of the regional climate models. Diurnal and seasonal characteristics of surface albedo in the temperate desert steppe were investigated during the 2008 growing season. The results showed that the diurnal dynamics of surface albedo was affected by the solar altitude, and took U-shaped with higher just after sunrise, before sunset and lower in the midday. Average surface albedo was 0.25 during the growing season, ranging from 0.20 to 0.34. Seasonal surface albedo showed higher in May, decreased in June, kept relatively stable from July to September, and increased in October. This variation was related to the phenology of the grassland canopy. Leaf area index and soil water content were the primary factors of surface albedo.
机译：反照率是地球气候系统的重要因素，也是区域气候模型的关键输入参数。在2008年生长季节调查了温带沙漠草原地表反照率的昼夜特征。结果表明，地表反照率的日变化受太阳高度的影响，呈U字形，刚好在日出后，日落前和午后较低。在生长季节，平均表面反照率是0.25，范围从0.20到0.34。季节性地表反照率在5月显示较高，6月下降，7月至9月保持相对稳定，10月上升。这种变化与草地冠层的物候有关。叶面积指数和土壤含水量是地表反照率的主要因素。

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