What Is the Use Value of Irrigation Water from the High Plains Aquifer?
基于1960-2007年美国高平原含水层县级数据，估计灌溉使作物生物量总产量平均增加51%，2007年每英亩灌溉毛价值196美元，总价值约30亿美元。
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.