Opportunities for saving and reallocating agricultural water to alleviate water scarcity
Opportunities for saving and reallocating agricultural water to alleviate water scarcity
复制标题
节约和重新分配农业用水以缓解水资源短缺的机会
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Ryu
中科院分区：
文献类型：
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作者：
B. Richter;James D. Brown;Rachel DiBenedetto;A. Gorsky;E. Keenan;Chantal Madray;Martha Morris;Devin A. Rowell;S. Ryu
随着水资源短缺在全球范围内蔓延，人们越来越关注如何减少水资源消耗，并将节省下来的水资源重新分配给其他用途，包括环境恢复。由于灌溉农业占缺水地区所有用水量的90%以上，因此人们将注意力集中在灌溉农场节水的机会上。与此同时，最近许多期刊文章表示关切的是，灌溉系统节水潜力的说法缺乏技术可信度，或者至少是夸大了，因为没有适当考虑到水预算的关键因素，如回流。批评者还断言，将灌溉节省的资金重新分配给其他用途的机会是有限的，因为任何释放出来的水都被其他农民占用了。进行了一项全面的文献和互联网调查，以确定有关灌溉农业节水策略的有据可查的研究，并审查了已成功将节水转移到其他用途的案例研究。我们的研究结果表明，事实上有相当大的潜力，以减少消耗性的水使用在灌溉系统时，适当考虑到水预算会计，这些节省可以有益地重新分配给其他目的。
As water scarcity worsens globally, there is growing interest in finding ways to reduce water consumption, and for reallocating water savings to other uses including environmental restoration. Because irrigated agriculture is responsible for more than 90% of all consumptive water use in water-scarce regions, much attention is being focused on opportunities to save water on irrigated farms. At the same time, many recent journal articles have expressed concern that claims of water-saving potential in irrigation systems lack technical credibility, or are at least exaggerated, due to failures to properly account for key elements of water budgets such as return flows. Critics have also asserted that opportunities for reallocating irrigation savings to other uses are limited because any freed-up water is taken up by other farmers. A comprehensive literature and internet survey was undertaken to identify well-documented studies of water-saving strategies in irrigated agriculture, as well as a review of case studies in which water savings have been successfully transferred to other uses. Our findings suggest that there is in fact considerable potential to reduce consumptive water use in irrigation systems when proper consideration is given to water budget accounting, and those savings can be beneficially reallocated to other purposes.