干旱区生态环境知识资源中心(Arid): Combining Crop and Water Decisions to Manage Groundwater Overdraft over Decadal and Longer Timescales

Arid

DOI	10.3390/w16091223
	Combining Crop and Water Decisions to Manage Groundwater Overdraft over Decadal and Longer Timescales
	Yao, Yiqing; Lund, Jay R.; Medellin-Azuara, Josue
通讯作者	Yao, YQ
来源期刊	WATER
EISSN	2073-4441
出版年	2024
卷号	16 期号:9
英文摘要	Coordinating management of groundwater, surface water, and irrigated crops is fundamental economically for many arid and semi-arid regions. This paper examines conjunctive water management for agriculture using hydro-economic optimization modeling. The analysis is integrated across two timescales: a two-stage stochastic decadal model for managing annual and perennial crops spanning dry and wet years and a far-horizon dynamic program embedding the decadal model into a longer groundwater policy setting. The modeling loosely represents California's San Joaquin Valley and has insights for many irrigated arid and semi-arid regions relying on groundwater with variable annual hydrology. Results show how conjunctive water management can stabilize crop decisions and improve agricultural profitability across different water years by pumping more in dry years and increasing recharging groundwater in wetter years. Using groundwater as a buffer for droughts allows growing more higher-value perennial crops, which maximizes profit even with water-scarce conditions. Nevertheless, ending overdraft in basins with declining groundwater for profit-maximizing farming reduces annual crops to maintain more profitable perennial crops through droughts. Results are affected by economic discount rates and future climates. Operating and opportunity costs from forgone annual crops can reduce aquifer recharge early in regulatory periods.
英文关键词	groundwater management water supply climate change hydro-economic modeling optimization conjunctive water use aquifer recharge
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:001219982000001
WOS关键词	CONJUNCTIVE-USE ; SURFACE-WATER ; RESERVOIR MANAGEMENT ; MODEL ; OPTIMIZATION ; ALLOCATION ; RESOURCES ; OPERATIONS ; DESIGN ; SYSTEM
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405870
推荐引用方式 GB/T 7714	Yao, Yiqing,Lund, Jay R.,Medellin-Azuara, Josue. Combining Crop and Water Decisions to Manage Groundwater Overdraft over Decadal and Longer Timescales[J],2024,16(9).
APA	Yao, Yiqing,Lund, Jay R.,&Medellin-Azuara, Josue.(2024).Combining Crop and Water Decisions to Manage Groundwater Overdraft over Decadal and Longer Timescales.WATER,16(9).
MLA	Yao, Yiqing,et al."Combining Crop and Water Decisions to Manage Groundwater Overdraft over Decadal and Longer Timescales".WATER 16.9(2024).