[1]SUN Yiqiu,GUAN Yinghui,WANG Zhirong,et al.Study on the Protective Effect of Vegetation Blanket on Ephemeral Gullies in Black Soil Farmland[J].Research of Soil and Water Conservation,2022,29(01):8-13.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 01
Page number:
8-13
Column:
Public date:
2022-02-20
- Title:
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Study on the Protective Effect of Vegetation Blanket on Ephemeral Gullies in Black Soil Farmland
- Author(s):
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SUN Yiqiu1, GUAN Yinghui2, WANG Zhirong1, WU Hailong1
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(1.College of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China; 2.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China)
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- Keywords:
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vegetation blanket; field ephemeral gully; protective effect; runoff and sediment production
- CLC:
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S157
- DOI:
-
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- Abstract:
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In order to explore the protective effect of vegetation blanket on ephemeral gully erosion in the early stage of vegetation restoration, and to provide scientific basis for ephemeral gully control of black soil farmland, we took the typical black soil of Heilongjiang Province as the research sample, quantitatively analyzed the effect of vegetation blanket on runoff and sediment yield of farmland ephemeral gully erosion under different confluence intensites through the indoor simulated confluence erosion experiment. The experimental results show that the runoff and sediment yield can be reduced by 16.23% and 80%, respectively, when the confluence intensity of 30 L/min is less than that of vegetation blanket; when the confluence intensity reaches to 40 L/min, the sediment reduction benefit of vegetation blanket measures decreases from 82.19% to 26.63%, while the flow reduction benefit decreases from 15.74% to 1.63%, which basically has no flow reduction effect; when the confluence intensity continues to increase to 50 L/min the effect of vegetation blanket on sediment reduction decreased further and finally lost its protective effect. This study shows that the vegetation blanket measure can have a better effect on runoff and sediment reduction under a certain confluence intensity, and its sediment reduction effect is obviously higher than that of runoff reduction. Therefore, under certain conditions, vegetation blanket can effectively prevent the further erosion of ephemeral gully, and is helpful to improve the early growth of grass cover and ecological environment.