干旱区生态环境知识资源中心(Arid): Predicting agroecosystem responses to identify appropriate water-saving management in arid irrigated regions with shallow groundwater: Realization on a regional scale

Arid

DOI	10.1016/j.agwat.2020.106713
	Predicting agroecosystem responses to identify appropriate water-saving management in arid irrigated regions with shallow groundwater: Realization on a regional scale
	Xiong, Lvyang; Xu, Xu; Engel, Bernard; Xiong, Yunwu; Huang, Quanzhong; Huang, Guanhua
通讯作者	Xu, X (corresponding author), China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	247
英文摘要	Scenario analysis is the basis of developing rational water management practices (WMPs) for watersheds. How to predict future hydrological responses on a regional-scale is still a challenge for modeling work in irrigated watersheds with shallow groundwater environments. Therefore, this paper presents an efficient realization of predicting regional agroecosystem responses and searching for appropriate WMPs, through using a water balance-based, semi-distributed hydrological model (SWAT-AG). The scenario case study is carried out in the Jiyuan Irrigation System located in the Hetao of upper Yellow River basin, based on the calibrated and validated modeling work in our previous companion paper. Eight scenarios of water-saving practices (WSPs) are proposed, with consideration for reducing irrigation depth and controlling initial groundwater depth. Then the coupled responses of agroecosystem processes to various WSPs are predicted for the case study region in 2012 and 2013, mainly related to the groundwater depth, root zone soil water and salinity, and crop yield/natural vegetation biomass. Based on the analysis for proposed scenarios, the 100% of present irrigation depth combined with increasing initial GWD by 50 cm are recommended as appropriate WSPs for dry years, and the 80% of present irrigation depth combined with increasing initial GWD by 100 cm are recommended for wet years, in order to maintain good environmental conditions for both crops and natural vegetation. In addition, results show that SWAT-AG could overcome the scale/function limitations of traditional soil/crop models and also avoid computational issues of numerical models. We further point out that the scenarios in reality will be more complicated and comprehensive in time and space, and thus the predictions should be updated accordingly. Overall, this case study fully presents the feasibility and practicality of using the SWAT-AG model to realize the scenario response analysis and water management decision-making on a region scale for irrigated watersheds with shallow groundwater environments.
英文关键词	Ago-ecohydrological modeling Agroecosystem processes Scenario analysis Irrigated watershed Water-saving management
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000617775600004
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; 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/2XILL650/368930
作者单位	[Xiong, Lvyang; Xu, Xu; Xiong, Yunwu; Huang, Quanzhong; Huang, Guanhua] China Agr Univ, Chinese Israeli Int Ctr Res & Training Agr, Beijing 100083, Peoples R China; [Xiong, Lvyang; Xu, Xu; Xiong, Yunwu; Huang, Quanzhong; 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
推荐引用方式 GB/T 7714	Xiong, Lvyang,Xu, Xu,Engel, Bernard,et al. Predicting agroecosystem responses to identify appropriate water-saving management in arid irrigated regions with shallow groundwater: Realization on a regional scale[J]. 中国农业大学,2021,247.
APA	Xiong, Lvyang,Xu, Xu,Engel, Bernard,Xiong, Yunwu,Huang, Quanzhong,&Huang, Guanhua.(2021).Predicting agroecosystem responses to identify appropriate water-saving management in arid irrigated regions with shallow groundwater: Realization on a regional scale.AGRICULTURAL WATER MANAGEMENT,247.
MLA	Xiong, Lvyang,et al."Predicting agroecosystem responses to identify appropriate water-saving management in arid irrigated regions with shallow groundwater: Realization on a regional scale".AGRICULTURAL WATER MANAGEMENT 247(2021).