Effects of Freeze-thaw and Hydraulic Compound Action on Soil Erosion in Northern Rocky Mountainous Area

[Objective] This study aims to elucidate the impact of freeze-thaw cycles and hydraulic action on soil erosion in the northern rocky mountain regions under varying conditions. [Methods] Utilizing soil samples from the Jiufeng area in Beijing, we conducted simulation tests using indoor runoff scourin...

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Bibliographic Details
Published inShui tu bao chi xue bao Vol. 38; no. 5; pp. 92 - 101
Main Authors YANG Haoyu, MA Lan, CHEN Shiyuan
Format Journal Article
LanguageChinese
Published Editorial Department of Journal of Soil and Water Conservation 01.10.2024
Subjects
erosion law
erosion resistance
freeze-thaw effect
hydraulic effect
sediment yield
sediment yield rate
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ISSN1009-2242
DOI10.13870/j.cnki.stbcxb.2024.05.022

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Summary:[Objective] This study aims to elucidate the impact of freeze-thaw cycles and hydraulic action on soil erosion in the northern rocky mountain regions under varying conditions. [Methods] Utilizing soil samples from the Jiufeng area in Beijing, we conducted simulation tests using indoor runoff scouring and freeze-thaw equipment. We examined the effects of five key factors—freeze-thaw cycle frequency, slope gradient, flow rate, initial soil moisture content, and freeze-thaw temperature differential—on soil sediment yield and anti-scourability. [Results] (1) The sensitivity of the soil’s anti-scourability coefficient to these factors ranks as follows: slope>flow rate>freeze-thaw temperature difference>freeze-thaw cycles>initial moisture content. Notably, slope and flow rate significantly influence the coefficient (p<0.05). For soil sediment yield, the sensitivity ranking is: flow rate>slope>freeze-thaw temperature difference>soil moisture content>freeze-thaw cycles, with flow rate exhibiting a very significant im
ISSN:1009-2242
DOI:10.13870/j.cnki.stbcxb.2024.05.022