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Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China

Wind and water erosion processes can lead to soil degradation. Topographic factors also affect the variation of soil properties. The effect of topographic factors on soil properties in regions where wind and water erosion simultaneously occur remains complicated. To address this effect, we conducted...

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Autores principales: Tuo, Dengfeng, Lu, Qi, Wu, Bo, Li, Qiang, Yao, Bin, Cheng, Leilei, Zhu, Jinlei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10347127/
https://www.ncbi.nlm.nih.gov/pubmed/37447129
http://dx.doi.org/10.3390/plants12132568
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author Tuo, Dengfeng
Lu, Qi
Wu, Bo
Li, Qiang
Yao, Bin
Cheng, Leilei
Zhu, Jinlei
author_facet Tuo, Dengfeng
Lu, Qi
Wu, Bo
Li, Qiang
Yao, Bin
Cheng, Leilei
Zhu, Jinlei
author_sort Tuo, Dengfeng
collection PubMed
description Wind and water erosion processes can lead to soil degradation. Topographic factors also affect the variation of soil properties. The effect of topographic factors on soil properties in regions where wind and water erosion simultaneously occur remains complicated. To address this effect, we conducted this study to determine the relationships between the changes in wind–water erosion and soil properties in different topographic contexts. We collected soil samples from conical landforms with different slope characteristics and positions in the wind–water erosion crisscross region of China. We examined the soil (137)Cs inventory, soil organic carbon (SOC), total nitrogen (TN), soil particles, soil water content (SWC), and biomass. (137)Cs was applied to estimate soil erosion. The results show that the soil erosion rate followed the order of northwest slope > southwest slope > northeast slope > southeast slope. The soil erosion rate on the northwest slope was about 12.06–58.47% higher than on the other. Along the slopes, the soil erosion rate decreased from the upper to the lower regions, and was 65.65% higher at the upper slope than at the lower one. The change in soil erosion rate was closely related to soil properties. The contents of SOC, TN, clay, silt, SWC, and biomass on the northern slopes (northwest and northeast slopes) were lower than those on the southern slopes (southeast and southwest slopes), and they were lower at the upper slope than at the lower one. Redundancy analysis showed that the variation in soil properties was primarily affected by the slope aspect, and less affected by soil erosion, accounting for 56.1% and 30.9%, respectively. The results demonstrate that wind–water erosion accelerates the impact of topographic factors on soil properties under slope conditions. Our research improves our understanding of the mechanisms of soil degradation in gully regions where wind and water erosion simultaneously occur.
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spelling pubmed-103471272023-07-15 Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China Tuo, Dengfeng Lu, Qi Wu, Bo Li, Qiang Yao, Bin Cheng, Leilei Zhu, Jinlei Plants (Basel) Article Wind and water erosion processes can lead to soil degradation. Topographic factors also affect the variation of soil properties. The effect of topographic factors on soil properties in regions where wind and water erosion simultaneously occur remains complicated. To address this effect, we conducted this study to determine the relationships between the changes in wind–water erosion and soil properties in different topographic contexts. We collected soil samples from conical landforms with different slope characteristics and positions in the wind–water erosion crisscross region of China. We examined the soil (137)Cs inventory, soil organic carbon (SOC), total nitrogen (TN), soil particles, soil water content (SWC), and biomass. (137)Cs was applied to estimate soil erosion. The results show that the soil erosion rate followed the order of northwest slope > southwest slope > northeast slope > southeast slope. The soil erosion rate on the northwest slope was about 12.06–58.47% higher than on the other. Along the slopes, the soil erosion rate decreased from the upper to the lower regions, and was 65.65% higher at the upper slope than at the lower one. The change in soil erosion rate was closely related to soil properties. The contents of SOC, TN, clay, silt, SWC, and biomass on the northern slopes (northwest and northeast slopes) were lower than those on the southern slopes (southeast and southwest slopes), and they were lower at the upper slope than at the lower one. Redundancy analysis showed that the variation in soil properties was primarily affected by the slope aspect, and less affected by soil erosion, accounting for 56.1% and 30.9%, respectively. The results demonstrate that wind–water erosion accelerates the impact of topographic factors on soil properties under slope conditions. Our research improves our understanding of the mechanisms of soil degradation in gully regions where wind and water erosion simultaneously occur. MDPI 2023-07-06 /pmc/articles/PMC10347127/ /pubmed/37447129 http://dx.doi.org/10.3390/plants12132568 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tuo, Dengfeng
Lu, Qi
Wu, Bo
Li, Qiang
Yao, Bin
Cheng, Leilei
Zhu, Jinlei
Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title_full Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title_fullStr Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title_full_unstemmed Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title_short Effects of Wind–Water Erosion and Topographic Factor on Soil Properties in the Loess Hilly Region of China
title_sort effects of wind–water erosion and topographic factor on soil properties in the loess hilly region of china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10347127/
https://www.ncbi.nlm.nih.gov/pubmed/37447129
http://dx.doi.org/10.3390/plants12132568
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