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Title: Crop yield response to climate change varies with crop spatial distribution pattern

Journal Article · · Scientific Reports

The linkage between crop yield and climate variability has been confirmed in numerous studies using statistical approaches. A crucial assumption in these studies is that crop spatial distribution pattern is constant over time. Here, we explore how changes in county-level corn spatial distribution pattern modulate the response of its yields to climate change at the state level over the Contiguous United States. Our results show that corn yield response to climate change varies with crop spatial distribution pattern, with distinct impacts on the magnitude and even the direction at the state level. Corn yield is predicted to decrease by 20~40% by 2050s when considering crop spatial distribution pattern changes, which is 6~12% less than the estimates with fixed cropping pattern. The beneficial effects are mainly achieved by reducing the negative impacts of daily maximum temperature and strengthening the positive impacts of precipitation. Our results indicate that previous empirical studies could be biased in assessing climate change impacts by ignoring the changes in crop spatial distribution pattern. As a result, this has great implications for understanding the increasing debates on whether climate change will be a net gain or loss for regional agriculture.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1363996
Report Number(s):
PNNL-SA-125055; KP1703030
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 52 works
Citation information provided by
Web of Science

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Exposure of the EU-28 food imports to extreme weather disasters in exporting countries journal October 2019
A fuzzy logic decision support model for climate-driven biomass loss risk in western Oregon and Washington journal October 2019
Projected climate and agronomic implications for corn production in the Northeastern United States journal June 2018
Climate change and geographic shifts in rice production in China journal February 2019
Effect of Climate Change on the Yield of Cereal Crops: A Review journal May 2018
Climate change decreases suitable areas for rapeseed cultivation in Europe but provides new opportunities for white mustard as an alternative oilseed for biofuel production journal November 2018
Changes in daily maximum temperature extremes across India over 1951–2014 and their relation with cereal crop productivity journal September 2018
Climate-Driven Crop Yield and Yield Variability and Climate Change Impacts on the U.S. Great Plains Agricultural Production journal February 2018
Climate adaptation by crop migration journal March 2020
When Will Current Climate Extremes Affecting Maize Production Become the Norm? journal February 2019