干旱区生态环境知识资源中心(Arid): Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits

Arid

DOI	10.3390/agriculture11020116
	Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits
	Pang, Aiping; Zhao, Fen; Li, Chunhui; Yi, Yujun
通讯作者	Li, CH (corresponding author), Beijing Normal Univ, Sch Environm, Minist Educ, Key Lab Water & Sediment Sci, Beijing 100875, Peoples R China.
来源期刊	AGRICULTURE-BASEL
EISSN	2077-0472
出版年	2021
卷号	11 期号:2
英文摘要	To solve the water use conflicts between agriculture and ecosystems in arid and semiarid areas, a multi-objective trade-off analysis method was applied to determine the environmental flows (e-flows) for the Yellow River Estuary, by considering the temporal and spatial discrepancies in water allocation. The results showed that during average years, a loss of 3.7 x 10(8) yuan was caused with every 1 x 10(8) m(3) of e-flows under the baseline scenario. The crop growth stages of April-July are sensitive periods for water requirements, and over 5000 yuan/ha production losses were caused by prioritizing e-flows during this time in dry years. The stages from July-October require more water by ecosystems than other stages, and the recommended e-flows during this time accounted for 57% of the e-flows during the total year. Under scenarios 1-3, which represent the short-term, medium-term and long-term scenarios, more water resources were supplied by underground water and water diversion projects; however, alleviating the water use contradiction remained difficult in dry years. During average years, e-flows between 148 and 168 x 10(8) m(3) are recommended to meet the ecological objectives of survival, reproduction and biological integrity of species for the Yellow River Estuary. The recommended e-flows in wet years could meet higher ecological objectives but still barely achieve the targets of sediment transport and ecosystem dynamic balance. In dry years, the economic losses may be beyond the acceptance of irrigation stakeholders if more water is allocated to improve e-flows. In this case, 71 x 10(8) yuan would be paid to them to compensate for their losses. This study proposes an e-flow recommendation framework that is economically and ecologically optimal in areas with irreconcilable water-use contradictions.
英文关键词	environmental flows water-use efficiency temporal and spatial discrepancies trading off the Yellow River Estuary
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000622002400001
WOS类目	Agronomy
WOS研究方向	Agriculture
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369032
作者单位	[Pang, Aiping; Zhao, Fen; Li, Chunhui; Yi, Yujun] Beijing Normal Univ, Sch Environm, Minist Educ, Key Lab Water & Sediment Sci, Beijing 100875, Peoples R China; [Pang, Aiping] Nanjing Acad Adm, Dept Publ Management, Nanjing 210046, Peoples R China
推荐引用方式 GB/T 7714	Pang, Aiping,Zhao, Fen,Li, Chunhui,et al. Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits[J]. 北京师范大学,2021,11(2).
APA	Pang, Aiping,Zhao, Fen,Li, Chunhui,&Yi, Yujun.(2021).Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits.AGRICULTURE-BASEL,11(2).
MLA	Pang, Aiping,et al."Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits".AGRICULTURE-BASEL 11.2(2021).