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首页> 外文会议>International Yellow River Forum on River Basin Management >Impact of Aridification on Runoff and Soil Moisture in the Loess Plateau ―A Case Study of Sanchuanhe River Basin
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Impact of Aridification on Runoff and Soil Moisture in the Loess Plateau ―A Case Study of Sanchuanhe River Basin

机译：旱作水河流域黄土高原径流与土壤水分的影响

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Taking Sanchuanhe River basin in Loess Plateau as example, a monthly water balance model is used to assess climate aridification effects. Based on hydrological simulation in the basin, according to the hypothetical climate scenarios, responses of runoff and soil moisture to climate change are analyzed consequently. The results show that the two variables are more sensitive to precipitation change than that to temperature change. But with decreasing of precipitation, the variables are less sensitive to temperature change. Runoff and soil moisture would decrease 16.0% and 8.4% if precipitation decreases 10% only. And if temperature rise 1°C only, runoff and soil moisture would decrease 6.2% and 5.6%. Under the hypothetical climate change scenario of temperature increase 2°C and precipitation decrease 20 % , runoff and soil moisture would decrease 36.3% and 26. 9 % respectively. Aridification not only changes the annual amount of runoff and soil moisture but also alters its distribution in a year, variations of the two variables in flood period is greater than that in drought period on the condition of constant climate change.
机译：以黄土高原为例采取桑川河流域，每月水平模型用于评估气候变化效应。根据盆地的水文模拟，根据假设的气候情景，因此分析了径流和土壤水分对气候变化的反应。结果表明，两个变量对降水变化更敏感，而不是温度变化。但随着降水的降低，变量对温度变化不太敏感。如果降水量仅降低10％，则径流和土壤水分将降低16.0％和8.4％。如果温度上升1°C，径流和土壤水分将降低6.2％和5.6％。根据假设的气候变化，温度增加2°C和降水降低20％，径流和土壤水分将减少36.3％和26.9％。环境不仅改变了径流和土壤水分的年度量，而且还改变了一年的分布，洪水期间两个变量的变化大于持续气候变化条件的干旱期。

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