Influence of the Morphology and Spatial Distribution of Exposed Bedrock on Soil Erosion on Karst Slopes

• Published in: Shui tu bao chi xue bao Vol. 39; no. 2; pp. 21 - 29
• Main Authors: ZHANG Xinyin, DAI Quanhou, YAN Youjin, XU Xiaojin
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Journal of Soil and Water Conservation 01.04.2025
• Subjects: karst slope; morphology of outcropping bedrock; natural rainfall; spatial distribution of outcropping bedrock
• ISSN: 1009-2242
• DOI: 10.13870/j.cnki.stbcxb.2025.02.023

［Objective］ By studying the influence of the morphology and spatial distribution of exposed bedrocks on soil erosion on karst slopes, it is helpful to deepen the understanding of erosion laws under natural rainfall conditions on karst slopes, and to provide a reference for rocky desertification control in karst areas. ［Methods］ Through the monitoring of natural rainfall, the effects of natural rainfall, the morphology and spatial distribution of outcropping bedrock on the sediment production of karst slopes were studied by taking different rock-soil covered slopes as the research objects. ［Results］ 1) The change in the morphology of exposed bedrock could significantly affect surface runoff, and such effect was rain-intensity dependent. 2) The morphology of exposed bedrock was one of the key factors in the dynamic changes of soil flow, and the spatial distribution of bedrock significantly affected the formation of soil flow under different rainfall intensities. Among them, the aggregation distribution (R-type)