[1]ZHOU Han,YAN Junxia,LI Hongjian,et al.Response of Soil and Water Loss on Different Underlying Surfaces of Sloping Farmland to Erosive Rainfall in the Loess Area of Western Shanxi Province[J].Research of Soil and Water Conservation,2019,26(04):7-12.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 04
Page number:
7-12
Column:
Public date:
2019-06-11
- Title:
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Response of Soil and Water Loss on Different Underlying Surfaces of Sloping Farmland to Erosive Rainfall in the Loess Area of Western Shanxi Province
- Author(s):
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ZHOU Han1,2, YAN Junxia1, LI Hongjian1, WANG Xiaoyun2
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1. Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China;
2. Shanxi Institute of Soil and Water Conversation Science, Taiyuan 030045, China
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- Keywords:
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sloping farmland; underlying surface; runoff and sediment production; infiltration rate
- CLC:
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S157.1
- DOI:
-
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- Abstract:
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In order to investigate characteristics of runoff, sediment and infiltration of sloping farmlands under different land uses in the loess area of western Shanxi, four underlying surfaces (maize, potato, abandoned farmland, bare land) were used as research objects in runoff plot experiment. Water balance methods were used to analyze the relationship between rainfall and runoff depth, sediment loss and infiltration rate. The runoff depth and sediment loss for the four underlying surface plots increased in the order: maize < potato < abandoned farmland < bare land, but the order for the infiltration rate was on the contrary. The runoff depths in potato, abandoned farmland, and bare land plots increased by 58.95%, 146.85%, and 261.48%, respectively, compared with that in the maize plot, and the losses of sediments increased by 50.45%, 94.98%, and 240.06%, respectively, and the infiltration rates decreased by 5.68%, 14.25% and 25.36%, respectively. A significant power function relationship between runoff depth and I10, I30, P×I10, P×I30 in maize, potato land and bare ground was found, but a linear function between runoff depth and these parameters in abandoned farmland existed. A similar trend as above was also found for amount of sediment loss. The infiltration rate decreased with the increase of rain intensity. Compared with potato, the characteristics of reducing runoff and sediment and increasing infiltration to a certain degree were observed in abandoned farmland and bare land, maize fields.