干旱区生态环境知识资源中心(Arid): Modeling agro-hydrological processes and analyzing water use in a super-large irrigation district (Hetao) of arid upper Yellow River basin

Arid

DOI	10.1016/j.jhydrol.2021.127014
	Modeling agro-hydrological processes and analyzing water use in a super-large irrigation district (Hetao) of arid upper Yellow River basin
	Xiong, Lvyang; Xu, Xu; Engel, Bernard; Huang, Quanzhong; Huo, Zailin; Xiong, Yunwu; Han, Wenguang; Huang, Guanhua
通讯作者	Xu, X ; Huang, GH (corresponding author), China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	603
英文摘要	High water consumption in large irrigation districts has resulted in large river water diversion and serious water use conflicts in the Yellow River basin (YRB). The excessive water applied is also a cause of the dual problems of soil salinity and water logging in the upper YRB, which further negatively impacts crop yields. This study is aimed at modeling and analyzing the agro-ecohydrological processes and water use performance in large irrigation districts of the YRB. The Hetao Irrigation District (Hetao), a super-large irrigation district located in the upper YRB, was selected as a typical research area. A watershed hydrological model (SWAT-AG) with enhanced capacity for simulating regional agro-ecohydrological processes was adopted in this study. We simulated the agro-ecohydrological processes in Hetao and analyzed the regional characteristics of depth to groundwater table, soil moisture and salt content, evapotranspiration and crop yield. Water accounting was further carried out to interpret water cycle processes and evaluate water use performance in Hetao. Results indicated that Hetao was characterized by shallow depth to groundwater table, high soil moisture and high evapotranspiration. For farmland, there was a decreasing trend for both soil moisture and evapotranspiration from the upper to lower regions in Hetao, but this decreasing trend was not found for natural land. Further, results showed soil salt content has strong spatial variations with land use type, crops and shallow groundwater environments. Correspondingly, crop yields presented a decreasing trend from the upper to lower regions of Hetao, with large spatial variabilities closely related to the spatial distribution of soil water and salt conditions across Hetao. It was worth noting that the regional water use efficiency was relatively low in Hetao, especially with large proportions of non-beneficial water consumption to total water consumption. Overall, this study provided a thorough understanding of agro-ecohydrological processes and their regional characteristics, and the current situation of irrigation water use issues in the whole Hetao district, and further provided valuable insights in improving water use and management in large irrigation districts of the upper YRB.
英文关键词	Agro-ecohydrological modeling Water use performance Crop yields Shallow groundwater Arid climate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706318300081
WOS关键词	PRODUCTIVITY ; AREA ; PARAMETERIZATION ; AGROECOSYSTEMS ; MANAGEMENT ; SUNFLOWER ; TRANSPORT ; SALINITY ; IMPACTS ; RUNOFF
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363928
作者单位	[Xiong, Lvyang; Xu, Xu; Huang, Quanzhong; Xiong, Yunwu; Huang, Guanhua] China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China; [Xiong, Lvyang; Xu, Xu; Huang, Quanzhong; Huo, Zailin; Xiong, Yunwu; Huang, Guanhua] China Agr Univ, Coll Water Resources & Civil Engn, Ctr Agr Water Res, Beijing 100083, Peoples R China; [Engel, Bernard] Purdue Univ, Agr & Biol Engn, 225 South Univ St, W Lafayette, IN 47907 USA; [Han, Wenguang] Bur Hetao Irrigat Dist, Yongji Expt Stn, Bayannaoer 015000, Peoples R China
推荐引用方式 GB/T 7714	Xiong, Lvyang,Xu, Xu,Engel, Bernard,et al. Modeling agro-hydrological processes and analyzing water use in a super-large irrigation district (Hetao) of arid upper Yellow River basin[J]. 中国农业大学,2021,603.
APA	Xiong, Lvyang.,Xu, Xu.,Engel, Bernard.,Huang, Quanzhong.,Huo, Zailin.,...&Huang, Guanhua.(2021).Modeling agro-hydrological processes and analyzing water use in a super-large irrigation district (Hetao) of arid upper Yellow River basin.JOURNAL OF HYDROLOGY,603.
MLA	Xiong, Lvyang,et al."Modeling agro-hydrological processes and analyzing water use in a super-large irrigation district (Hetao) of arid upper Yellow River basin".JOURNAL OF HYDROLOGY 603(2021).