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Erosion Transportation Processes as Influenced by Gully Land Consolidation Projects in Highly Managed Small Watersheds in the Loess Hilly–Gully Region, China

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Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
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Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
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School of Civil Engineering, Yangling Vocational & Technical College, Yangling 712100, China
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Research Center on Soil & Water Conservation, Ministry of Water Resources, Yangling 712100, China
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College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China
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State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
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Author to whom correspondence should be addressed.
Academic Editor: Tomáš Dostál
Water 2021, 13(11), 1540; https://doi.org/10.3390/w13111540
Received: 7 April 2021 / Revised: 24 May 2021 / Accepted: 26 May 2021 / Published: 30 May 2021
(This article belongs to the Special Issue Modelling of Soil Conservation, Soil Erosion and Sediment Transport)
The Loess Hilly–Gully region (LHGR) is the most serious soil erosion area in the world. For the small watershed with high management in this area, the scientific problem that has been paid attention to in recent years is the impact of the land consolidation project on the erosion environment in the gully region. In this study, the 3D simulation method of vegetation, eroded sediment and pollutant transport was innovated based on the principles of erosion sediment dynamics and similarity theory, and the impacts of GLCP were analyzed on the erosion environment at different scales. The verification results show that the design method and the scale conversion relationship (geometric scale: λl = 100) were reasonable and could simulate the transport process on the complex underlying surface of a small watershed. Compared with untreated watersheds, a significant change was the current flood peak lagging behind the sediment peak. There were two important critical values of GLCP impact on the erosion environment. The erosion transport in HMSW had no change when the proportion was less than 0.85%, and increased obviously when it was greater than 3.3%. The above results have important theoretical and practical significance for watershed simulation and land-use management in HMSW. View Full-Text
Keywords: gully land consolidation; erosion transport; highly managed small watershed; Loess Hilly–Gully region gully land consolidation; erosion transport; highly managed small watershed; Loess Hilly–Gully region
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MDPI and ACS Style

Ji, Q.; Gao, Z.; Li, X.; Gao, J.; Zhang, G.; Ahmad, R.; Liu, G.; Zhang, Y.; Li, W.; Zhou, F.; Liu, S. Erosion Transportation Processes as Influenced by Gully Land Consolidation Projects in Highly Managed Small Watersheds in the Loess Hilly–Gully Region, China. Water 2021, 13, 1540. https://doi.org/10.3390/w13111540

AMA Style

Ji Q, Gao Z, Li X, Gao J, Zhang G, Ahmad R, Liu G, Zhang Y, Li W, Zhou F, Liu S. Erosion Transportation Processes as Influenced by Gully Land Consolidation Projects in Highly Managed Small Watersheds in the Loess Hilly–Gully Region, China. Water. 2021; 13(11):1540. https://doi.org/10.3390/w13111540

Chicago/Turabian Style

Ji, Qianqian, Zhe Gao, Xingyao Li, Jian’en Gao, Gen’guang Zhang, Rafiq Ahmad, Gang Liu, Yuanyuan Zhang, Wenzheng Li, Fanfan Zhou, and Sixuan Liu. 2021. "Erosion Transportation Processes as Influenced by Gully Land Consolidation Projects in Highly Managed Small Watersheds in the Loess Hilly–Gully Region, China" Water 13, no. 11: 1540. https://doi.org/10.3390/w13111540

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