干旱区生态环境知识资源中心(Arid): Simulating water and salt transport in subsurface pipe drainage systems with HYDRUS-2D

Arid

DOI	10.1016/j.jhydrol.2020.125823
	Simulating water and salt transport in subsurface pipe drainage systems with HYDRUS-2D
	Liu, Yi; Ao, Chang; Zeng, Wenzhi; Srivastava, Amit Kumar; Gaiser, Thomas; Wu, Jingwei; Huang, Jiesheng
通讯作者	Ao, C ; Zeng, WZ (corresponding author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	592
英文摘要	Subsurface pipe drainage (SPD) has been widely applied in arid and semiarid regions to control soil salinization. To increase the accuracy of HYDRUS-2D simulations in SPD, three effective strategies, including the resistance layer (RL), actual infiltration surface (AIS), and equivalent radius (ER) treatments, were proposed to replace the standard seepage boundary (SSB) for subsurface pipes in HYDRUS-2D. First, the accuracy of the three strategies was calibrated using laboratory experiments with the multi-objective calibration method of the PEST program. Second, additional laboratory experiments were conducted to validate the three strategies. The RL, AIS, and ER strategies obtained a relatively high simulation accuracy in terms of the soil salt content (SSC), soil water content (SWC), and drainage and salt discharge processes that was significantly higher than that obtained with the standard seepage boundary (SSB) strategy. Moreover, compared with the AIS, ER, and SSB strategies, the RL strategy attained the highest simulation accuracy regarding the water drainage (root mean square error (RMSE) = 3.42 L; mean absolute error (MAE) = 2.91 L) and salt discharge (RMSE = 0.12 kg; MAE = 0.11 kg) in SPD. The relative position of the subsurface pipe has an important effect on the desalting rate of the clay layer (CL). Based on the SPD simulation by HYDRUS-2D with the RL strategy, we recommend placing the subsurface pipe below the clay layer to obtain the best water drainage and salt discharge effects in regions containing CLs. Furthermore, a positive logarithmic relationship between the drainage rate of the subsurface pipe and the CL saturated hydraulic conductivity was found (R-2 = 0.99). Future research should focus on the upper and lower boundary conditions of HYDRUS-2D to further increase the SPD simulation accuracy.
英文关键词	HYDRUS-2D Subsurface pipe boundary Clay layer Soil salinization
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000639844900051
WOS关键词	MULCHED DRIP IRRIGATION ; SOIL-WATER ; HYDRAULIC CONDUCTIVITY ; NUMERICAL-SIMULATION ; AGRICULTURAL SOIL ; FLOW ; TILE ; GROUNDWATER ; DYNAMICS ; COTTON
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369072
作者单位	[Liu, Yi; Ao, Chang; Zeng, Wenzhi; Wu, Jingwei; Huang, Jiesheng] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China; [Srivastava, Amit Kumar; Gaiser, Thomas] Univ Bonn, Inst Crop Sci & Resource Conservat INRES, Crop Sci Grp, Katzenburgweg 5, D-53115 Bonn, Germany
推荐引用方式 GB/T 7714	Liu, Yi,Ao, Chang,Zeng, Wenzhi,et al. Simulating water and salt transport in subsurface pipe drainage systems with HYDRUS-2D[J],2021,592.
APA	Liu, Yi.,Ao, Chang.,Zeng, Wenzhi.,Srivastava, Amit Kumar.,Gaiser, Thomas.,...&Huang, Jiesheng.(2021).Simulating water and salt transport in subsurface pipe drainage systems with HYDRUS-2D.JOURNAL OF HYDROLOGY,592.
MLA	Liu, Yi,et al."Simulating water and salt transport in subsurface pipe drainage systems with HYDRUS-2D".JOURNAL OF HYDROLOGY 592(2021).