[1]CHEN Peng,ZHANG Tiegang,DONG Zhi,et al.Effect of Different Shrub and Grass Patterns on Soil Detachment Characteristics in Pisha Sandstone Area[J].Research of Soil and Water Conservation,2021,28(03):13-18.
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Effect of Different Shrub and Grass Patterns on Soil Detachment Characteristics in Pisha Sandstone Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 03
Page number:
13-18
Column:
Public date:
2021-04-20
- Title:
- Effect of Different Shrub and Grass Patterns on Soil Detachment Characteristics in Pisha Sandstone Area
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- Exploring the characteristics of soil detachment driven by flow is of significance to elucidate the mechanism of soil erosion and to avoid the risk of soil loss. In this study, the shrubs on the lower(SL), middle(SM)and upper(SU)slope and grass land slope(GL)were taken as research objects, and bare land slope(BL)was taken as control. The response characteristics of different vegetation patterns to soil detachment and the relationship between soil detachment rate and sediment separation characteristics were studied by field erosion test in Pisha sandstone area. The results show that:(1)different shrub—grass patterns could reduce soil detachment degree of slope by weakening the flow kinetic energy in the runoff process; under the three flow scouring degree(15, 20, 30 L/min), the soil detachment rates of the Pisha sandstone area ranged from 0.055 to 0.469 g/(m2·s), among which the soil detachment rate of pattern SL was the lowest [0.098 g/(m2·s)], which was the best shrub—grass arrangement measure to reduce the erosion degree of soil;(2)soil detachment rate, flow stream power, flow unit stream power in different shrub—grass patterns decreased in the order: Pattern BL>Pattern GL> Pattern SU>Pattern SM>Pattern S; the flow stream power was the best hydrodynamic parameter to simulate soil detachment rate, and it could better simulate the slope soil detachment characteristics of slope in this area. This study can provide data support for the analysis of soil detachment characteristics and mechanisms in the future, and provide scientific basis for reasonably constructing slope soil erosion production model in the Pisha sandstone area.
- References:
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Last Update:
2021-04-20