[1]CHAI Chengwu,XU Xianying,WANG Fanglin,et al.Response of Clay Interlayer Structure Soil to Rainfall Infiltration in the Lower Reaches of Shiyang River[J].Research of Soil and Water Conservation,2021,28(02):163-167+175.
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Response of Clay Interlayer Structure Soil to Rainfall Infiltration in the Lower Reaches of Shiyang River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
163-167+175
Column:
Public date:
2021-02-06
- Title:
- Response of Clay Interlayer Structure Soil to Rainfall Infiltration in the Lower Reaches of Shiyang River
- CLC:
- S152
- DOI:
- -
- Abstract:
- An experimental study on the influence of clay interlayer on rainfall infiltration was carried out by artificial test method under the background of natural rainfall to find out the effect of soil structure on rainfall redistribution in the soil. The results show that:(1)after the same time of rainfall and redistribution of water, the water content of soil at the end of rainfall is mainly controlled by the water content at the beginning of rainfall and the highest water content that rainfall infiltration can reach, followed by the thickness of clay interlayer;(2)after long-term water redistribution under rainfall conditions, the soil moisture content of sandy soil on the surface layer of clay interlayer shows the characteristics that the smaller the thickness of clay layer is, the lower the surface water content is; the higher the initial moisture content of sand layer under the clay layer and the clay layer is, the more the water content increases, the increasing speed, the water loss, the loss speed. The soil with clay interlayer structure blocks the infiltration of water into the deep layer where the water is hard to be used by plants, and the water is held in the clay layer and the upper and lower part of the clay layer. It has the best effect as a whole for water retention in the 10 cm thick clay layer when the surface layer is covered with sand for 20 cm thick over 10 cm, 20 cm and 30 cm thick clay layers.
- References:
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Last Update:
2021-02-10