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首页> 外文期刊>Journal of the Association of Environmental and Resource Economists >Potential Benefits from Innovations to Reduce Heat and Water Stress in Agriculture
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Potential Benefits from Innovations to Reduce Heat and Water Stress in Agriculture

机译：减少农业热量和水分压力的创新可能带来的好处

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摘要

A key challenge in determining the optimal research and development (R&D) investment portfolio for adapting to climate change in agriculture is to understand the potential benefits from reducing alternative sources of climate damages. Existing econometric studies are not able to separately identify the impacts of heat and water stress because higher temperatures cause damages through both mechanisms. To resolve the identification problem, I introduce measures of water deficit and water surplus into a regression analysis that estimates the nonlinear impacts of heat and water stress on nonirrigated rental rates in the central United States. The results indicate rental rate losses of 33% ($9.5 billion annually) by mid-century due to climate change in scenario RCP 4.5. I find that 65% of the projected damages are due to heat stress, 32% due to increasing water deficit, and 3% due to increasing water surplus. However, the source of damages varies spatially.
机译：确定适应农业气候变化的最佳研发投资组合的关键挑战是了解减少气候损害替代来源的潜在收益。现有的计量经济学研究无法单独确定热量和水分胁迫的影响，因为较高的温度会通过这两种机制造成损害。为了解决识别问题，我将缺水和缺水量的测量方法引入回归分析中，以估算热量和水分压力对美国中部非灌溉租金的非线性影响。结果表明，由于情景RCP 4.5中的气候变化，到本世纪中叶，租金率损失了33％（每年95亿美元）。我发现，预计的损害中有65％是由于热应力造成的，32％是由于缺水现象的增加，3％是由于水的剩余量的增加。但是，损害的来源在空间上有所不同。

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