《AJAE》| 高平原含水层灌溉水的使用价值是什么?
摘要:
这项研究估计了美国高平原含水层灌溉水的总价值。基于1960 -2007年的县级观测数据,我们估算了作物总生物量生产的产量函数。这项研究发现,灌溉增加了该地区总生物量产量平均值的51%。我们估计,到2007年,平均每年灌溉总值为每英亩196美元,整个含水层的总价值约为30亿美元。我们还计算出在2007年含水层在暴露在33摄氏度以上的24小时(每天一度)的情况下,生物产量平均减少3%,减少的价值约为每英亩10美元。
关键词:地下水,高平原含水层,灌溉反应,生产函数,产量。
Abstract:
This study provides an estimate of the gross value of irrigation water from the U.S. High Plains Aquifer. We estimate a yield function for aggregated crop biomass production, based on county-level observations for 1960–2007. This study found that irrigation increases total biomass yield in this region by an average of 51%. We estimate the average gross annual value of irrigation as of 2007 to be $196 per acre, for a total of about $3 billion across the aquifer. We also estimate that on average across the aquifer, exposure to 24 hours of temperatures above 33°C (one degree day) reduces biomass yield by 3%, with a value in 2007 of about $10 per acre.
Keywords : Groundwater, High Plains Aquifer, irrigation response, production function, yields.
《AJAE》全称为《American Journal of Agricultural Economics》,《美国农业经济学杂志》旨在为世界各地的农业和食品经济学、自然资源和环境、以及农村和社区发展等领域的创造性学术工作讨论提供平台。最新影响因子为4.082,刊载方向为管理科学-农业经济与政策。
原文链接:
https://onlinelibrary.wiley.com/doi/10.1093/ajae/aay062