Arid
DOI10.1016/j.jenvman.2013.04.037
Integrated assessment of policy interventions for promoting sustainable irrigation in semi-arid environments: A hydro-economic modeling approach
Blanco-Gutierrez, Irene1; Varela-Ortega, Consuelo1; Purkey, David R.2
通讯作者Blanco-Gutierrez, Irene
来源期刊JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
EISSN1095-8630
出版年2013
卷号128页码:144-160
英文摘要

Sustaining irrigated agriculture to meet food production needs while maintaining aquatic ecosystems is at the heart of many policy debates in various parts of the world, especially in arid and semi-arid areas. Researchers and practitioners are increasingly calling for integrated approaches, and policy-makers are progressively supporting the inclusion of ecological and social aspects in water management programs. This paper contributes to this policy debate by providing an integrated economic-hydrologic modeling framework that captures the socio-economic and environmental effects of various policy initiatives and climate variability. This modeling integration includes a risk-based economic optimization model and a hydrologic water management simulation model that have been specified for the Middle Guadiana basin, a vulnerable drought-prone agro-ecological area with highly regulated river systems in southwest Spain. Namely, two key water policy interventions were investigated: the implementation of minimum environmental flows (supported by the European Water Framework Directive, EU WFD), and a reduction in the legal amount of water delivered for irrigation (planned measure included in the new Guadiana River Basin Management Plan, GRBMP, still under discussion). Results indicate that current patterns of excessive water use for irrigation in the basin may put environmental flow demands at risk, jeopardizing the WFD’s goal of restoring the ’good ecological status’ of water bodies by 2015. Conflicts between environmental and agricultural water uses will be stressed during prolonged dry episodes, and particularly in summer low-flow periods, when there is an important increase of crop irrigation water requirements. Securing minimum stream flows would entail a substantial reduction in irrigation water use for rice cultivation, which might affect the profitability and economic viability of small rice-growing farms located upstream in the river. The new GRBMP could contribute to balance competing water demands in the basin and to increase economic water productivity, but might not be sufficient to ensure the provision of environmental flows as required by the WFD. A thoroughly revision of the basin’s water use concession system for irrigation seems to be needed in order to bring the GRBMP in line with the WFD objectives. Furthermore, the study illustrates that social, economic, institutional, and technological factors, in addition to bio-physical conditions, are important issues to be considered for designing and developing water management strategies. The research initiative presented in this paper demonstrates that hydro-economic models can explicitly integrate all these issues, constituting a valuable tool that could assist policy makers for implementing sustainable irrigation policies. (C) 2013 Elsevier Ltd. All rights reserved.


英文关键词Water management Sustainable irrigation Hydro-economic modeling Policy analysis Semi-arid regions
类型Article
语种英语
国家Spain ; USA
收录类别SCI-E ; SSCI
WOS记录号WOS:000326203400017
WOS关键词CLIMATE-CHANGE ; WATER-RESOURCES ; FARMING SYSTEMS ; RIVER-BASIN ; MANAGEMENT ; FRAMEWORK ; SCALE ; REQUIREMENTS ; STRATEGIES ; CALIFORNIA
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178286
作者单位1.Univ Politecn Madrid, ETSI Agronomos, Dept Agr Econ & Social Sci, E-28040 Madrid, Spain;
2.Stockholm Environm Inst US Ctr, Davis, CA 95616 USA
推荐引用方式
GB/T 7714
Blanco-Gutierrez, Irene,Varela-Ortega, Consuelo,Purkey, David R.. Integrated assessment of policy interventions for promoting sustainable irrigation in semi-arid environments: A hydro-economic modeling approach[J],2013,128:144-160.
APA Blanco-Gutierrez, Irene,Varela-Ortega, Consuelo,&Purkey, David R..(2013).Integrated assessment of policy interventions for promoting sustainable irrigation in semi-arid environments: A hydro-economic modeling approach.JOURNAL OF ENVIRONMENTAL MANAGEMENT,128,144-160.
MLA Blanco-Gutierrez, Irene,et al."Integrated assessment of policy interventions for promoting sustainable irrigation in semi-arid environments: A hydro-economic modeling approach".JOURNAL OF ENVIRONMENTAL MANAGEMENT 128(2013):144-160.
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