The impact of climate extremes and irrigation on US crop yields
By T. Troy, C. Kipgen, I. Pal. 2015
292 citations recorded by the source corpus.
Climate variability and extremes are expected to increase due to climate change; this may have significant negative impacts for agricultural production. Previous work has primarily focused on the impact of mean growing season temperature and precipitation on rainfed crop yields with little work on irrigated crop yields or climate extremes and their timing. County-level crop yields and daily precipitation and temperature data are pooled to quantify the impact of climate variability and extremes on four major staple crops in the United States. Conditional density plots are used to graphically explore the relationship between climate extremes and crop yields, thereby avoiding assumptions about linearity or underlying probability distributions. Non-linear and threshold-type relationships exist between yields and both precipitation and temperature climate indices; irrigation significantly reduces the impact of all climate indices. In some cases, this occurs by shifting the threshold, such that a more extreme weather event is necessary to negatively impact yields. In other cases, irrigation essentially decouples the crop yields from climate. This work demonstrates that irrigation may be a beneficial adaptation mechanism to changes in climate extremes in coming decades.
Subfields: Ecology, Evolution, Behavior and Systematics, Global and Planetary Change, Soil Science
View Paper: https://www.semanticscholar.org/paper/f8d9923dc6758a271c313bb7a2d59b8617152494
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In Ecology, Evolution, Behavior and Systematics
In Global and Planetary Change
Citations in the corpus
- Severity of drought and heatwave crop losses tripled over the last five decades in Europe (2021, background): “A common approach is to link impacts to climatological and/or hydrological threshold-based events (Lobell et al 2013, Troy et al 2015, Powell and Reinhard 2016, Lüttger and Feike 2018, Ajaz et al 2019, Vogel et al 2019).”
- The effects of climate extremes on global agricultural yields (2019, background): “Published by IOPPublishing Ltd Previous studies have investigated the impacts of extreme events on crop yields for individual regions for which high-resolution yield and climate data were available (Schlenker and Roberts 2009, Troy et al 2015, Lüttger and Feike 2017).”
- Wheat yield loss attributable to heat waves, drought and water excess at the global, national and subnational scales (2017, background): “The thermal vertical structure of the atmospheric surface layer can also be altered by evaporative cooling due to irrigation (Tack et al 2015, Troy et al 2015, Mueller et al 2016).”