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首页> 外文期刊>Agricultural Water Management >Irrigation evaluation based on performance analysis and water accounting at the Bear River Irrigation Project (U.S.A.).
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Irrigation evaluation based on performance analysis and water accounting at the Bear River Irrigation Project (U.S.A.).

机译：根据熊河灌溉项目（美国）的性能分析和水核算进行灌溉评估。

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The purpose of this work is to contribute to the development of a combined approach to evaluate irrigated areas based on: (1) irrigation performance analysis intended to assess the productive impacts of irrigation practices and infrastructures, and (2) water accounting focused on the hydrological impacts of water use. Ador-Simulation, a combined model that simulates irrigation, water delivery, and crop growth and production was applied in a surface irrigated area (1213 ha) located in the Bear River Irrigation Project, Utah, U.S.A.. A soil survey, a campaign of on-farm irrigation evaluations and an analysis of the database from the Bear River Canal Company and other resources were performed in order to obtain the data required to simulate the water flows of the study area in 2008. Net land productivity (581 US$ ha-1) was 20% lower than the potential value, whereas on-farm irrigation efficiency (IE) averaged only 60%. According to the water accounting, water use amounted to 14.24 Mm3, 86% of which was consumed through evapotranspiration or otherwise non-recoverable. Gross water productivity over depleted water reached 0.132 US$ m-3. In addition, two strategies for increasing farm productivity were analyzed. These strategies intended to improve water management and infrastructures raised on-farm IE to 90% reducing the gap between current and potential productivities by about 50%. Water diverted to the project was reduced by 2.64 Mm3. An analysis based on IE could lead to think that this volume would be saved. However, the water accounting showed that actually only 0.91 Mm3 would be available for alternative uses. These results provide insights to support the decision-making processes of farmers, water user associations, river basin authorities and policy makers. Water accounting overcomes the limitations and hydrological misunderstandings of traditional analysis based on irrigation efficiency to assess irrigated areas in the context of water scarcity and competitive agricultural markets.
机译：这项工作的目的是基于以下方面促进开发一种评估灌溉面积的综合方法：（1）灌溉性能分析，旨在评估灌溉实践和基础设施的生产影响，以及（2）以水文为重点的用水核算用水的影响。在美国犹他州贝尔河灌溉项目的地表灌溉区域（1213公顷）中采用了模拟灌溉，水输送以及作物生长和生产的组合模型Ador-Simulation。进行了农田灌溉评估以及对熊河运河公司和其他资源的数据库进行了分析，以获得模拟研究区域2008年水流量所需的数据。土地净生产率（581美元/公顷） > -1 ）比潜在价值低20％，而农田灌溉效率（IE）平均仅为60％。根据用水核算，用水量为14.24 Mm 3 ，其中86％是通过蒸散或其他不可回收的方式消耗的。贫水的总水生产率达到0.132 US $ m -3 。此外，分析了两种提高农场生产力的策略。这些旨在改善水管理和基础设施的策略将农场的工业化程度提高到90％，从而将当前和潜在生产率之间的差距减少了约50％。转移到项目的水减少了2.64 Mm 3 。基于IE的分析可能会导致认为可以节省该数量。但是，水资源核算表明，实际上只有0.91 Mm 3 可用于替代用途。这些结果为支持农民，用水户协会，流域当局和政策制定者的决策过程提供了见识。水资源核算克服了传统的基于灌溉效率的分析的局限性和对水文的误解，以在缺水和竞争性农业市场的背景下评估灌溉面积。

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