Are we saving water? Simple methods for assessing the effectiveness of groundwater conservation measures
Are we saving water? Simple methods for assessing the effectiveness of groundwater conservation measures
复制标题
我们节约用水了吗？
DOI：
10.1016/j.agwat.2023.108408
复制
发表时间：
2023
影响因子：
6.7
通讯作者：
Wilson, Blake B.
中科院分区：
文献类型：
--
作者：
Whittemore, Donald O.;Butler, James J.;Bohling, Geoffrey C.;Wilson, Blake B.
世界上许多主要含水层的灌溉抽水大量减少了蓄水量，危及未来的粮食生产。因此，正在采用新的养护措施，以减少抽水，延长含水层寿命。关键问题是这些做法在实现真正的节水方面有多有效（即，减少水资源的使用量？抽水和降水之间的关系有助于提供一个答案，因为在地表水供应有限的半干旱至亚湿润气候中，降水解释了含水层年度灌溉用水量的大部分变化。我们的目标是利用雷达降水和灌溉地下水利用在一系列的空间尺度之间的相关性，以评估在美国中部的高平原含水层的保护方法的有效性。2013年在堪萨斯西北部建立的一个保护区的抽水量和降水量之间的线性回归表明，与2005-2012年相同的气候条件相比，2013-2021年期间的用水量和每个灌溉面积的用水量分别减少了27%和25%以上。类似的回归发现，与2005-2017年中西部堪萨斯县的保护区相比，2018-2021年期间灌溉用水量和每个灌溉面积的用水量分别减少了38%和23%。灌溉面积的减少是造成这些减少的主要原因。较高的R2值后，保护区的建立意味着灌溉跟踪降水更好地由于使用土壤水分传感器和其他措施的一部分，提高灌溉效率和加强水资源管理。降水量和用水量的关系，这是统计上显着的范围广泛的空间尺度，有很大的潜力，以评估高质量的用水和降水数据的地区的保护措施的有效性。
Substantial storage reductions by irrigation pumping in many of the world’s major aquifers jeopardize future food production. As a result, new conservation measures are being utilized to reduce pumping and extend aquifer lifespans. The key question is how effective are these practices in attaining true water conservation (i.e., water use reduction) for a given area? Relationships between pumping and precipitation help provide an answer, as precipitation explains most of the variation in annual irrigation water use for aquifers in semi-arid to sub-humid climates when surface water supplies are limited. Our objective is to utilize correlations between radar precipitation and irrigation groundwater use at a range of spatial scales to assess the effectiveness of conservation approaches in the High Plains aquifer in the central USA. Linear regressions between pumping and precipitation for a conservation area established in 2013 in northwest Kansas indicate that water use and water use per irrigated area were over 27 % less and 25 % less, respectively, during 2013–2021 compared to the same climatic conditions during 2005–2012. Similar regressions found over a 38 % reduction and 23 % reduction in irrigation water use and use per irrigated area, respectively, during 2018–2021 compared to the same conditions during 2005–2017 in a west-central Kansas county with conservation areas. A decrease in irrigated area accounted for most of the difference between these reductions. Higher R2values after conservation area establishment imply that irrigation tracks precipitation better due to use of soil moisture sensors and other measures as part of increased irrigation efficiency and enhanced water management. The precipitation and water use relationships, which are statistically significant for a wide range of spatial scales, have great potential for assessing the effectiveness of conservation practices in areas with high-quality water use and precipitation data.
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2015 年美国主要含水层地下水抽取量估计
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
J. Lovelace;M. Nielsen;Amy L. Read;C. J. Murphy;M. A. Maupin
通讯作者：
M. A. Maupin
影响因子：
5.2
作者：
Butler, James J., Jr.;Whittemore, Donald O.;Bohling, Geoffrey C.
通讯作者：
Bohling, Geoffrey C.
影响因子：
2.6
作者：
Butler, J. J.;Bohling, G. C.;Wilson, B. B.
通讯作者：
Wilson, B. B.
支持灌溉农业的含水层评估的数据需求评估
影响因子：
5.4
作者：
G. Bohling;J. Butler;D. Whittemore;B. Wilson
通讯作者：
B. Wilson
影响因子：
4.8
作者：
G. Ou;F. Muñoz-Arriola;D. R. Uden;D. Martin;C. Allen;Nancy Shank
通讯作者：
G. Ou;F. Muñoz-Arriola;D. R. Uden;D. Martin;C. Allen;Nancy Shank