灌溉技术与节水:理论与证据综述

IF 7.8 3区 经济学 Q1 ECONOMICS
C. Pérez-Blanco, Arthur Hrast-Essenfelder, C. Perry
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引用次数: 58

摘要

农业约占全球淡水取取量的70%,它往往是淡水价值最低的使用方式。在缺水地区,诸如滴灌和管道输送系统等先进灌溉技术作为“节水技术”得到推广,这些技术可以减少农业用水,从而将水释放到其他用途(例如环境)。本文探讨了这一观点是否正确,并讨论了wct在理论和实践上对水资源保护的贡献。基于对230多篇理论和实证论文的广泛回顾,我们认为WCTs不应被视为实现节水的工具,而应被视为稳定和提高缺水地区农业用水生产率和农民收入的手段。我们的结论是,如果最终目标是水资源保护,就必须采用水资源保护政策,即旨在在不同用途(例如,从灌溉到环境)之间重新分配可用资源的治理工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Irrigation Technology and Water Conservation: A Review of the Theory and Evidence
Farming accounts for approximately 70 percent of freshwater withdrawals worldwide, and it often constitutes the lowest value use of freshwater. Where water is scarce, advanced irrigation technologies such as drip and piped delivery systems have been promoted as “water conservation technologies” (WCTs) that reduce agricultural water consumption, thus releasing water to alternative uses (e.g., the environment). This article examines whether this is true, discussing how WCTs contribute, in theory and practice, to water conservation. Based on an extensive review of more than 230 theoretical and empirical papers, we argue that WCTs should not be viewed as a tool for achieving water conservation, but rather as a means for stabilizing and increasing agricultural water productivity and farmers’ income in places where water is scarce. We conclude that, if the ultimate objective is water conservation, it is essential to adopt water conservation policies—that is, governance instruments aimed at reallocating available resources among uses (e.g., from irrigation to the environment)
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来源期刊
CiteScore
10.80
自引率
0.00%
发文量
25
期刊介绍: The Review of Environmental Economics and Policy fills the gap between traditional academic journals and the general interest press by providing a widely accessible yet scholarly source for the latest thinking on environmental economics and related policy. The Review publishes symposia, articles, and regular features that contribute to one or more of the following goals: •to identify and synthesize lessons learned from recent and ongoing environmental economics research; •to provide economic analysis of environmental policy issues; •to promote the sharing of ideas and perspectives among the various sub-fields of environmental economics;
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