[1]Zhao Zekun,Shi Mingchang,Yang Runze,et al.Effects of soil and water conservation measures on runoff and soil loss in sloping area under heavy rainfall conditions[J].Research of Soil and Water Conservation,2025,32(02):43-51.[doi:10.13869/j.cnki.rswc.2025.02.033]
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Effects of soil and water conservation measures on runoff and soil loss in sloping area under heavy rainfall conditions
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
32
Number of periods:
2025 02
Page number:
43-51
Column:
Public date:
2025-01-20
- Title:
- Effects of soil and water conservation measures on runoff and soil loss in sloping area under heavy rainfall conditions
- Keywords:
- soil erosion; heavy rainfall; runoff-producing and sediment-producing; soil and water conservation benefits; northern soil and rocky mountainous areas
- CLC:
- S157.2
- DOI:
- 10.13869/j.cnki.rswc.2025.02.033
- Abstract:
- [Objective]The aims of this study are to investigate the effect of soil and water conservation measures runoff and sand production on slope under heavy rainfall conditions, and to provide a basis for the scientific development of efficient soil erosion control measures. [Methods]Seven runoff plots in the Soil and Water Conservation Science and Technology Demonstration Park of Shixia Sub-basin in Miyun District, Beijing, were used as the study sites. The observation data of 20 events of natural rainstorms from 2010 to 2021 were selected. The impacts of different soil and water conservation measures on the production of runoff and sand, and surface pollution were explored by using the methods of statistics and correlation analysis. The correlations between the rainfall, soil, and vegetation factors and the production of runoff and sediment were analyzed. [Results](1)The total annual rainfall in the study area was relatively flat between 2010 and 2021, but the annual rainfall frequency increased and the number of storms showed a rising trend.(2)Among the 20 samples of heavy rainfall conditions, the runoff and sediment reduction rates of wattle were 94.13% and 99.76%, respectively, and the runoff and sediment reduction benefits were better than those of other combinations, such as Robinia pseudoacacia Linn + Platycladus orientalis Franco + fish scale pits and Zea mays L + terraces. Vitex negundo Linn, Robinia pseudoacacia Linn + Platycladus orientalis Franco + fish scale pit had better prevention and control of opposite source pollution, and the pollution indexes were significantly lower than the average level.(3)The correlation analysis of rainfall factor, vegetation factor and runoff sediment showed that the average rainfall intensity, I30,I60 and runoff were significantly positively correlated, with correlation coefficients of 0.54, 0.73, 0.7, respectively. The average rainfall intensity, I60 and sediment amount were significantly positively correlated, with correlation coefficients of 0.58, 0.5, respectively. The plant cover was significantly negatively correlated with runoff and sediment amount, with correlation coefficients of -0.51, -0.58. [Conclusion]Considering the runoff sediment data under heavy rainfall conditions, it is believed that under the premise of guaranteeing economic benefits, the use of wattle is recommend as a priority soil and water conservation measure in this area.
- References:
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Last Update:
2025-01-20