气候变化领域集成服务门户(CCPortal): Evaluating Distributed Policies for Conjunctive Surface Water-Groundwater Management in Large River Basins: Water Uses Versus Hydrological Impacts

CCPortal

DOI	10.1029/2021WR031352
	Evaluating Distributed Policies for Conjunctive Surface Water-Groundwater Management in Large River Basins: Water Uses Versus Hydrological Impacts
	Du, Erhu; Tian, Yong; Cai, Ximing; Zheng, Yi; Han, Feng; Li, Xin; Zhao, Mohan; Yang, Yi; Zheng, Chunmiao
通讯作者	Zheng, CM (通讯作者)
发表日期	2022
ISSN	0043-1397
EISSN	1944-7973
卷号	58 期号:1
英文摘要	It is imperative to understand the interconnectedness of water use and hydrological impacts for water policy design underlying varying hydrological conditions across space and over time. However, such analysis remains difficult, constrained by the lack of appropriate modeling tools that fully integrate water policies, water use, and hydrological processes with high spatiotemporal resolutions. To address this challenge, this study proposes a distributed policy design scheme featuring spatially variable and temporally dynamic policies for conjunctive surface water-groundwater management in large river basins. A fully integrated modeling framework is developed to tightly couple (a) an agent-based model for farmers' water use under distributed water policies and (b) a physically based hydrological model for surface water-groundwater processes. The modeling framework is applied to the Heihe River Basin to assess water use and hydrological impacts under distributed water policies. By using the distributed policy scheme to adjust a water policy (e.g., groundwater tax) across space and over time, we found that hydrological outcomes can be improved without adversely reducing agricultural water supply. For example, by shifting the implementation of a high groundwater tax from dry to wet years, a rise of the water table by 0.28 m (0.03-0.95 m across different irrigation districts) can be achieved while the total water supply is maintained at a similar level. Furthermore, hydrological externality effects among nearby districts can be explicitly identified and quantified based on assessments of spatially varying water policies. This study highlights the need for water policy design to consider spatiotemporal variations in the physical hydrological system.
关键词	ENERGY-FOOD NEXUS RESOURCE-MANAGEMENT SURROGATE MODEL MULTIOBJECTIVE OPTIMIZATION SYSTEM-ANALYSIS AGRICULTURE CONNECTIVITY EXTERNALITY DESIGN
英文关键词	hydrological impacts; agent-based model; HEIFLOW; distributed water policy; coupled human-natural systems
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS记录号	WOS:000751310200024
来源期刊	WATER RESOURCES RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260736
推荐引用方式 GB/T 7714	Du, Erhu,Tian, Yong,Cai, Ximing,et al. Evaluating Distributed Policies for Conjunctive Surface Water-Groundwater Management in Large River Basins: Water Uses Versus Hydrological Impacts[J]. 中国科学院青藏高原研究所,2022,58(1).
APA	Du, Erhu.,Tian, Yong.,Cai, Ximing.,Zheng, Yi.,Han, Feng.,...&Zheng, Chunmiao.(2022).Evaluating Distributed Policies for Conjunctive Surface Water-Groundwater Management in Large River Basins: Water Uses Versus Hydrological Impacts.WATER RESOURCES RESEARCH,58(1).
MLA	Du, Erhu,et al."Evaluating Distributed Policies for Conjunctive Surface Water-Groundwater Management in Large River Basins: Water Uses Versus Hydrological Impacts".WATER RESOURCES RESEARCH 58.1(2022).