[1]ZHANG Jianhua,WANG Yundong,YANG Qingsong,et al.Experimental Study on Erosion Process Among Different Soil Layers of Granite Red Soil in Southeast Hubei Province[J].Research of Soil and Water Conservation,2022,29(05):55-61,69.
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Experimental Study on Erosion Process Among Different Soil Layers of Granite Red Soil in Southeast Hubei Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 05
Page number:
55-61,69
Column:
Public date:
2022-08-20
- Title:
- Experimental Study on Erosion Process Among Different Soil Layers of Granite Red Soil in Southeast Hubei Province
- Keywords:
- rainfall kinetic energy; granite red soil; soil erosion rate; stream power; quantification
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- Through indoor artificial rainfall simulated experiments, we preliminarily explored the characteristics of runoff and sediment yield, the changes in hydrodynamic parameters and their quantitative relationships with soil erosion rate during the slope erosion process of the various layers of the granite red soil(eluvial layer, sediment layer, parent layer)under different rainfall kinetic energy conditions. The results show that:(1)rainfall kinetic energy had a significant impact on the sediment and runoff characteristics of different soil layers; with the increase of rainfall kinetic energy, the initial runoff time of each layer of soil continued to decrease, and the runoff sediment content and total sediment yield continued to increase;(2)there were significant differences in the erosion processes between the soil layers; the initial runoff time, runoff sediment content and total sediment yield all showed significant differences; Iit was found that there was a good linear relationship between soil erosion rate and rainfall kinetic energy through regression analysis;(3)stream power and unit stream power had a significant correlation with soil erosion rates, and the relationship between them could be accurately described by a power function; the introduction of soil clay content could make the model more reliable and have a wider range of applications and higher practical value in practical applications. In conclusion, rainfall kinetic energy and soil texture had significant effects on the formation and development of granite red soil slope erosion.
- References:
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Last Update:
2022-08-20