干旱区生态环境知识资源中心(Arid): Modelling the salt accumulation and leaching processes in arid agricultural areas with a new mass balance model

Arid

DOI	10.1016/j.jhydrol.2020.125329
	Modelling the salt accumulation and leaching processes in arid agricultural areas with a new mass balance model
	Mao, Wei; Zhu, Yan; Wu, Jingwei; Ye, Ming; Yang, Jinzhong
通讯作者	Zhu, Y (corresponding author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	591
英文摘要	Soil salinization has become a widespread problem that seriously affects the sustainable development of agriculture. To deal with the salt accumulation and leaching problems in practical agricultural systems, a new soil water and solute transport model adopting the mass balance scheme is developed in this study. The soil water movement module is based on a previously published soil water mass balance model, named as UBMOD. The mobile-immobile assumption has been adopted to develop the soil solute transport module, which can describe the obvious anomalous transport phenomenon in practice. The advection, chemical reactions of solute, solute transfer between the mobile and immobile regions, and dispersion in the mobile region are considered in the solute transport module, while only chemical reactions and solute transfer between the mobile and immobile regions are considered in the immobile region. Three cases were designed to evaluate the performance of the model by comparing the simulation results with those obtained by experimental results, HYDRUS-1D, and practical observations. The results demonstrate that the developed model can solve the homogeneous and heterogeneous soil water movement and solute transport effectively, and it has looser restrictions on the discretization of space and time than the numerical solution of Richards' equation and can keep the mass balance well, which make it more suitable for practical conditions. Moreover, the real-world application of salt accumulation and leaching problems in Hetao Irrigation District, Inner Mongolia, China shows that the RMSE of the simulated soil salt content with the immobile present region is about 20% better than that when ignoring the immobile present region. Therefore, it is necessary to take the significant anomalous transport into account when studying the salt accumulation and leaching processes in practical agricultural systems.
英文关键词	Soil water movement Solute transport Mobile-immobile assumption Mass balance model Salt accumulation and leaching
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599757800045
WOS关键词	IRRIGATION WATER SALINITY ; SOLUTE TRANSPORT ; SOIL-SALINITY ; SCALE ; FLOW ; DYNAMICS ; GROUNDWATER ; CALIBRATION ; PREDICTION ; DRAINAGE
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/2XILL650/369237
作者单位	[Mao, Wei; Zhu, Yan; Wu, Jingwei; Yang, Jinzhong] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China; [Ye, Ming] Florida State Univ, Dept Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA
推荐引用方式 GB/T 7714	Mao, Wei,Zhu, Yan,Wu, Jingwei,et al. Modelling the salt accumulation and leaching processes in arid agricultural areas with a new mass balance model[J],2020,591.
APA	Mao, Wei,Zhu, Yan,Wu, Jingwei,Ye, Ming,&Yang, Jinzhong.(2020).Modelling the salt accumulation and leaching processes in arid agricultural areas with a new mass balance model.JOURNAL OF HYDROLOGY,591.
MLA	Mao, Wei,et al."Modelling the salt accumulation and leaching processes in arid agricultural areas with a new mass balance model".JOURNAL OF HYDROLOGY 591(2020).