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论文应用Vrsmarty水量平衡模型模拟黄土高原地区的土壤水分对全球气候变化的响应。该模型综合考虑了土壤、植被、高程、温度、太阳辐射、水汽压、风速和降雨等因子对土壤水分的影响。模型运行的结果表明,黄土高原地区土壤水分在1961—2000年期间是一种逐渐减小的变化趋势:该地区6月的平均土壤水分从1960s的42.3 mm降低到了1990s的38 mm;10月的土壤水平均值从1960s的93.9 mm降低到了1990s的56.7 mm,这种变化的原因是降雨量不断减少,年平均降水从1960s的443 mm降低到了1990s的406 mm,同时潜在蒸发量也在不断减少,月最大潜在蒸发量从1960s的190 mm降低到了1990s的142 mm。
The paper uses Vrsmarty water balance model to simulate the response of soil moisture to global climate change in the Loess Plateau. The model considers the influence of soil, vegetation, elevation, temperature, solar radiation, vapor pressure, wind speed and rainfall on soil moisture. The results of model operation showed that the soil moisture in the Loess Plateau decreased gradually from 1961 to 2000: the mean soil moisture in June decreased from 42.3 mm in 1960s to 38 mm in 1990s; in October The average soil water level decreased from 93.9 mm in 1960s to 56.7 mm in 1990s. The reason for this change is the continuous decrease of rainfall, the decrease of average annual precipitation from 443 mm in 1960s to 406 mm in 1990s, and the decrease of potential evaporation. The maximum monthly potential evaporation decreased from 190 mm in 1960s to 142 mm in 1990s.