Abstract
A monitoring station was set up in Zhengning County, Gansu Province. The changes in soil moisture content within 10.0 m under the condition of natural rainfall infiltration had been observed continuously for a whole year. Combined with the data of precipitation, evaporation and temperature, the rules of water migration in loess were analyzed. The results show that soil moisture within 1.2 m is affected greatly by rainfall and evaporation, changing annually. When the precipitation goes higher than 18 mm/d, soil moisture content within this range will change jumpily on its background trend. In the deep, water moves mainly in the form of vapor, the migrate amount is very small, resulting that soil moisture contents grow not only weakly but also non-annually, the accumulated amount can not be ignored, water will gather around the surface when encountering paleosol layer.
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Li, P., Li, Tl., Xing, Xl., Wang, H. (2015). In-situ Observation on Regularities of Rainfall Infiltration in Cold and Dry Loess Area. In: Lollino, G., Manconi, A., Clague, J., Shan, W., Chiarle, M. (eds) Engineering Geology for Society and Territory - Volume 1. Springer, Cham. https://doi.org/10.1007/978-3-319-09300-0_61
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DOI: https://doi.org/10.1007/978-3-319-09300-0_61
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