Effects of Freeze-thaw Action on Snowmelt, Wind and Rainfall Erosion in Chinese Typical Mollisol Region

[Objective] Researches on the effects of freeze-thaw action on slope soil erosion in the Chinese typical Mollisol Region can deepen the understanding of the mechanism of slope erosion process and provide important scientific basis for slope erosion control. [Methods] Using snowmelt, wind and rainfal...

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Bibliographic Details
Published inShui tu bao chi xue bao Vol. 38; no. 4; pp. 63 - 71
Main Authors ZHAO Yajun, ZHENG Fenli, WU Binglong, PAN Xuncheng, ZHENG Runhe, ZHAO Luyou, WANG Xuesong, MO Shuaihao
Format Journal Article
LanguageChinese
Published Editorial Department of Journal of Soil and Water Conservation 01.08.2024
Subjects
freeze-thaw action
rainfall erosion
snowmelt erosion
the chinese mollisol region
wind erosion
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Summary:[Objective] Researches on the effects of freeze-thaw action on slope soil erosion in the Chinese typical Mollisol Region can deepen the understanding of the mechanism of slope erosion process and provide important scientific basis for slope erosion control. [Methods] Using snowmelt, wind and rainfall erosion driven by a single erosion forces as controls, the effects of freeze-thaw on snowmelt, wind and rainfall erosion were analyzed by designing simulation experiments of freeze-thaw-snowmelt, freeze-thaw-wind and freeze-thaw-rainfall in the typical Mollisol Region of China. The experiment treatment consisted one freeze-thaw action, two snowmelt runoff flows (1 and 2 L/min), one wind velocity (12 m/s), one rainfall intensity (100 mm/h) and one slope (3°). [Results] (1) The freeze-thaw effect significantly increased the amount of slope snow melt, wind and rainfall erosion (p<0.05). Compared with no freeze-thaw action, the snowmelt erosion under 1,2 L/min snowmelt runoff increased by 2 042.9% and 777.9%, and the
ISSN:1009-2242
DOI:10.13870/j.cnki.stbcxb.2024.04.003