干旱区生态环境知识资源中心(Arid): Determining water allocation scheme to attain nutrient management objective for a large lake receiving irrigation discharge

Arid

DOI	10.1016/j.jhydrol.2021.126900
	Determining water allocation scheme to attain nutrient management objective for a large lake receiving irrigation discharge
	Liu, Xuemei; Zhang, Guangxin; Xu, Y. Jun; Zhang, Jingjie; Wu, Yao; Ju, Hanyu
通讯作者	Zhang, GX (corresponding author), Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, 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	Irrigation discharge is a relevant water resource for lake ecosystems in arid and semi-arid regions. However, high concentrations of nitrogen and phosphorus in the irrigation discharge raise concerns over potential lake eutrophication in these regions. A Delft3D hydrodynamic-water quality model was used to explore the effects of multiple water sources on water quality of a large shollow lake in the semi-arid west of Northeast China, which is surrounded by irrigated rice paddies. Eighteen scenarios in a combination of different precipitation rates, irrigation discharge operations, and flow conditions were simulated to analyze time and water allocation required in order to achieve nutrient standards of total nitrogen (TN) <= 1.5 mg/L and total phosphorus (TP) <= 0.1 mg/L. The results showed that time required for the optimal combination to achieve nutrient management objectives displayed an increasing trend from the east to west. In the best control scenario where the irrigation discharge was regulated into the lake, TN and TP concentrations could be reduced by 60% and 70%, respectively. Water diversion from a freshwater reservoir can effectively improve lake water quality even though sediment nutrient resuspension could occur in the eastern region of lake. The findings suggest that using multi-source water supplies can attain nutrient management objectives in order to reduce eutmphication risk for a lake that receives nutrient-rich irrigation discharge. The study also demonstrates the great usefulness of hydrodynamic-water quality modeling for assessing water resource allocation and science-based decision making in intensive agriculture practices.
英文关键词	Water quality Multiple water source supply Water diversion Agricultural irrigation discharge Nutrient management Chagan Lake
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706313000081
WOS关键词	CONTROLLING EUTROPHICATION ; YANGTZE-RIVER ; QUALITY ; BASIN ; TAIHU ; PHOSPHORUS ; SEDIMENT ; DYNAMICS ; MODEL ; RELEASE
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/2XILL650/368142
作者单位	[Liu, Xuemei; Zhang, Guangxin; Zhang, Jingjie; Wu, Yao; Ju, Hanyu] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China; [Liu, Xuemei; Ju, Hanyu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Xu, Y. Jun] Louisiana State Univ, Sch Renewable Nat Resources, Ctr Agr, 227 Highland Rd, Baton Rouge, LA 70803 USA; [Zhang, Jingjie] Natl Univ Singapore, Environm Res Inst, Kent Ridge 117576, Singapore
推荐引用方式 GB/T 7714	Liu, Xuemei,Zhang, Guangxin,Xu, Y. Jun,et al. Determining water allocation scheme to attain nutrient management objective for a large lake receiving irrigation discharge[J],2021,603.
APA	Liu, Xuemei,Zhang, Guangxin,Xu, Y. Jun,Zhang, Jingjie,Wu, Yao,&Ju, Hanyu.(2021).Determining water allocation scheme to attain nutrient management objective for a large lake receiving irrigation discharge.JOURNAL OF HYDROLOGY,603.
MLA	Liu, Xuemei,et al."Determining water allocation scheme to attain nutrient management objective for a large lake receiving irrigation discharge".JOURNAL OF HYDROLOGY 603(2021).