Rheological Evaluation of Soil Mechanical Stability During Vegetation Restoration

[Objective] This study is aiming to evaluate the dynamic evolution of soil microstructure stability during vegetation restoration on the Loess Plateau. [Methods] Soil samples from four stages of vegetation succession in the Ziwuling forest region were examined. Utilizing the amplitude sweep test met...

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Bibliographic Details
Published inShui tu bao chi xue bao Vol. 38; no. 5; pp. 175 - 183
Main Authors WANG Xinyu, ZHOU Lin, MENG Jing, HU Shaojie, LÜ Yinyan, XU Chenyang, HU Feinan
Format Journal Article
LanguageChinese
Published Editorial Department of Journal of Soil and Water Conservation 01.10.2024
Subjects
matric potentials
microstructure stability
rheology
vegetation restoration
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Summary:[Objective] This study is aiming to evaluate the dynamic evolution of soil microstructure stability during vegetation restoration on the Loess Plateau. [Methods] Soil samples from four stages of vegetation succession in the Ziwuling forest region were examined. Utilizing the amplitude sweep test method, soil shear strength and viscoelastic parameters were assessed under various matric potentials (0, -3 and -10 kPa). Correlation analyses between these parameters and soil physicochemical properties were conducted. [Results] (1) Soil shear strength and viscoelasticity exhibited an increasing trend with advancing vegetation succession stages, attributed primarily to the increasing of soil organic carbon, exchangeable Ca2+ and sand content, along with reduced Na+ during vegetation recovery. This augmentation contributed to enhanced interparticle adhesion and frictional forces. (2) The soil shear strength parameter increased with the decreasing of matric potential. Under low matric potential conditions, there was n
ISSN:1009-2242
DOI:10.13870/j.cnki.stbcxb.2024.05.004