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Soil organic carbon induces a decrease in erodibility of black soil with loess parent materials in northeast China

Published online by Cambridge University Press:  12 December 2023

Jingyi Cui
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Licheng Guo*
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
Shangfa Xiong*
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Shiling Yang
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Yongda Wang
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China
Shihao Zhang
Affiliation:
Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
Hui Sun
Affiliation:
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China
*
Corresponding authors: Licheng Guo; Email: guolicheng05@mail.iggcas.ac.cn; Shangfa Xiong; Email: xiongsf@mail.iggcas.ac.cn
Corresponding authors: Licheng Guo; Email: guolicheng05@mail.iggcas.ac.cn; Shangfa Xiong; Email: xiongsf@mail.iggcas.ac.cn

Abstract

Although black soil in northeast China undergoes severe erosion, the contribution of parent materials, mainly Quaternary loess and non-loess sediments, to soil erodibility remains unclear. Considering the inheritance of ferromagnetic materials by parent materials, changes in magnetic parameters can successfully determine soil erodibility on a regional scale with a close climatic background. Here, we analysed the magnetic indicators of 142 samples from the black soil horizon formed on loess and non-loess sediments, covering areas of severe and slight erosion in the region to determine the effects of parent materials on the erodibility of black soil in northeast China. Both low-frequency magnetic susceptibility and frequency magnetic susceptibility (χfd) were proportional to the decrease in erosion rate due to erosion-induced leaching of ferromagnetic materials, and the change in χfd was narrow for black soil with loess parent materials, corresponding to relatively low soil erodibility. Compared with loess, the addition of soil organic matter could stabilise soils against erosion, thereby inducing a decrease in the erodibility of black soil formed on loess. Additionally, sustainable soil management policies to protect black soil from further erosion are necessary and urgent under the pressure of maintaining high grain yields and preventing erosion in northeast China.

Information

Type
Research Article
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Quaternary Research Center

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