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Open AccessArticle

Influence of Gully Land Consolidation on Phreatic Water Transformation in the Loess Hilly and Gully Region

by 1,2,3,4, 1,2,3,4,*, 2, 2,3, 2, 5, 6, 2,3 and 7
1
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
2
Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China
3
Research Center of Soil and Water Conservation Engineering and Technology of Ministry of Water Resources, Yangling 712100, China
4
University of Chinese Academy of Sciences, Beijing 100049, China
5
Shaanxi Environmental Protection Group Ecological Construction Management Co., Ltd., Xi’an 710000, China
6
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
7
College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China
*
Author to whom correspondence should be addressed.
Academic Editor: David Widory
Water 2021, 13(4), 538; https://doi.org/10.3390/w13040538
Received: 23 January 2021 / Revised: 14 February 2021 / Accepted: 16 February 2021 / Published: 19 February 2021
(This article belongs to the Special Issue Human Impact on Water Resources)
Gully Land Consolidation (GLC) is a proven method to create farmlands and increase crop yields in the Loess Hilly and Gully Region, China. However, GLC influences phreatic water transformation and might cause the farmlands water disasters, such as salinization and swamping. For exploring the influence of GLC on phreatic water transformation and mitigating disasters, a series of indoor experiments were conducted in the artificial rainfall hall. Then, we simulated the phreatic water transformation patterns under more conditions with HYDRUS-3D. Finally, an engineering demonstration in the field was performed to validate our research. The indoor experiments indicated that GLC could increase phreatic water outflow rate 4.39 times and phreatic water coefficient (PWC) 2.86 times with a considerable delay. After calibration and validation with experimental data, the HYDRUS-3D was used to simulate phreatic water transformation under more soil thickness and rainfall intensities. Accordingly, we summarized the relationship among PWC, rainfall intensities, and soil thickness, and therefore suggested a blind ditch system to alleviate farmlands disasters. Field application showed that a blind ditch system could avoid disasters with 3.2 times the phreatic water transformation rate compared to loess. Our research provides implications for sustainable land uses and management in the region with thick soil covers. View Full-Text
Keywords: Loess Hilly and Gully Region; Gully Land Consolidation; phreatic water transformation; HYDRUS-3D Loess Hilly and Gully Region; Gully Land Consolidation; phreatic water transformation; HYDRUS-3D
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MDPI and ACS Style

Guo, Z.; Gao, J.; Sun, P.; Dou, S.; Li, J.; Lou, X.; Wang, H.; Ahmad, R.; Gao, Z. Influence of Gully Land Consolidation on Phreatic Water Transformation in the Loess Hilly and Gully Region. Water 2021, 13, 538. https://doi.org/10.3390/w13040538

AMA Style

Guo Z, Gao J, Sun P, Dou S, Li J, Lou X, Wang H, Ahmad R, Gao Z. Influence of Gully Land Consolidation on Phreatic Water Transformation in the Loess Hilly and Gully Region. Water. 2021; 13(4):538. https://doi.org/10.3390/w13040538

Chicago/Turabian Style

Guo, Zihao; Gao, Jianen; Sun, Pengcheng; Dou, Shaohui; Li, Juan; Lou, Xianyong; Wang, Hong; Ahmad, Rafiq; Gao, Zhe. 2021. "Influence of Gully Land Consolidation on Phreatic Water Transformation in the Loess Hilly and Gully Region" Water 13, no. 4: 538. https://doi.org/10.3390/w13040538

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