Impact of Aridification on Runoff and Soil Moisture in the Loess Plateau ―A Case Study of Sanchuanhe River Basin

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外文摘要：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℃ only， runoff and soil moisture would decrease 6。2% and 5。6%。 Under the hypothetical climate change scenario of temperature increase 2℃ 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。

外文关键词：

aridificationrunoffsoil moisturemonthly water balance modelSanchuanhe river basinthe Loess Plateau

作者：

Wang Guoqing、Chen Jiangnan、Li Haobing

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作者单位：

Hehai University, Nanjing, 210098

会议名称：

Proceedings of the 1st International Yellow River Forum on River Basin Management vol.2

会议母体文献：

International Yellow River Forum on River Basin Management vol.2; ;

页码：

P.412-416