Effects of soil crust on the collapsing erosion of colluvial deposits with granite residual soil
作者机构：School of Infrastructure EngineeringNanchang UniversityNanchang 330031China
出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)
年 卷 期：2024年第21卷第8期
页 面：2579-2591页
核心收录：
学科分类：082802[工学-农业水土工程] 090707[农学-水土保持与荒漠化防治] 0907[农学-林学] 08[工学] 0828[工学-农业工程] 09[农学] 0815[工学-水利工程]
基 金：This work was supported by the National Natural Science Foundation of China[Grant Nos.41962015,52208348] the Jiangxi Provincial Natural Science Foundation[Grant No.20224BAB214064,20232BAB204083]
主 题：Granite residual soil Colluvial deposits Slope erosion Soil crust Sediment yield
摘 要：Collapsing erosion is a unique phenomenon commonly observed on the granite residue hillslopes in the tropical and subtropical regions of southern China,characterized by its abrupt occurrence and significant erosion ***,the impacts of soil crust conditions on the erosion of colluvial deposits with granite residual soils have only been studied to a limited *** address this issue,this study investigates the impacts of three soil crust conditions(i.e.,without crust,10-minute crust,and 20-minute crust)on gully morphology,rainfall infiltration,and runoff and sediment yield during slope erosion of colluvial deposits with granite residues(classified as Acrisols)in Yudu County,Ganzhou City,Jiangxi Province,China,using simulated rainfall tests and photographic *** results showed that as the strength of the soil crust increased,the capacity of moisture infiltration and the width and depth of the gully as well as the sediment concentration and yield ratio decreased;at the same time,the runoff ratio *** sediment yield in the without-crust test was found to be 1.24 and 1.43 times higher than that observed in the 10-minute crust and 20-minute crust tests,*** results indicate that soil crusts can effectively prevent slope erosion and moisture infiltration,while providing valuable insights for the management of soil erosion in natural environments.
维普期刊数据库
同方期刊数据库