Exploring the relationship between soil erosion and hydraulic parameters on slopes with clipped herbaceous vegetation through Bayesian network modeling

Bibliographic Data

ID21648481
AuthorsQilin He (State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, the Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of Education Yangling China), Binbin Li (0000-0002-1008-6704, Water and Soil Conservation Monitoring Center of Ministry of Water Resources Beijing China), Bin‐Bin Li (0000-0001-5073-7746, Institute of Soil and Water Conservation), Fengbao Zhang (0000-0003-1003-256X, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, the Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of Education Yangling China, corresponding author), Nan Shen (0000-0002-8592-5779, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, the Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of Education Yangling China), Mingyi Yang (0000-0003-2574-552X, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, the Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of Education Yangling China)
Year2024
Volume35
Issue9
Pages3048-3061
Publication date2024-05-30
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueLand Degradation and Development (JOURNAL)
Journal identifiersISSN: 1085-3278 • E-ISSN: 1099-145X
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ldr.5116
OpenAlexW4393409994
LanguageEN
References cited63

Clipping management, which alters vegetation conditions by removing aboveground vegetation while preserving the underground root system, directly impacts hydrological processes and flow dynamics, ultimately affecting soil erosion processes. This study conducted field experiments (2 × 6 m) encompassing four clipping intensities (with vegetation coverage of 70%, 50%, 25%, and 0%), three rainfall intensities (60, 90, and 120 mm·h −1 ), and three slope gradients (10°, 20°, and 30°). The results showed that clipping treatments significantly reduced the Darcy–Weisbach resistance coefficient ( f ). Elevated levels of clipping intensity, rainfall intensity, and slope gradient led to increased flow velocity ( v ), Reynolds number ( Re ), and stream power ( ω ). The shear stress ( τ ) exhibited an upward trend with rising slope and rainfall intensity, with no significant difference in the effect of clipping intensity. Variation partitioning analysis demonstrated that the influence of steep slopes amplified the effects of rainfall intensity while diminishing the impact of clipping intensity on v values. Critically, the Bayesian network model suggested that, in comparison to the influence of raindrop splashing, soil detachment and transportation by runoff were the predominant driving mechanisms for erosion on slopes with clipped vegetation. Rainfall intensity and clipping intensity were found to raise the runoff depth and enhance the v value, which ultimately influenced soil erosion. Overall, these results contribute to an improved comprehension of the hydraulic dynamics of soil erosion on slopes with clipped vegetation and provide invaluable perspectives for developing effective clipping management strategies to ensure sustainable land utilization and judicious water resource governance

Bayesian network · Erosion · Geomorphology · Geotechnical engineering · Herbaceous plant · Statistics · Environmental Science · Fire effects on ecosystems · Mathematics · Remote Sensing and LiDAR Applications · Soil erosion and sediment transport · Ecology · Geology · Soil Science

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