What question did this study set out to answer?

Determine whether rising atmospheric carbon dioxide concentrations stimulate crop yields enough under real-world field conditions to offset projected agricultural losses caused by climate change.

June 30, 2006Science

Food for Thought: Lower-Than-Expected Crop Yield Stimulation with Rising CO 2 Concentrations

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Authors

SLStephen P. LongUniversity of Essex EAElizabeth A. AinsworthUniversity of Illinois Urbana-Champaign ALAndrew D. B. LeakeyUniversity of Illinois Urbana-Champaign

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Implication

Open-air field trials reveal reduced crop yield stimulation under elevated carbon dioxide in major grain crops, indicating rising emissions may fail to offset climate-driven agricultural losses.

Key Points

Determine whether rising atmospheric carbon dioxide concentrations stimulate crop yields enough under real-world field conditions to offset projected agricultural losses caused by climate change.
Evaluated the yield response of major grain crops grown under elevated carbon dioxide concentrations using free-air concentration enrichment (FACE) technology in open-air conditions.
Compared open-air yield fertilization responses against established estimates derived from historical enclosure experiments used in predictive climate models.
Elevated carbon dioxide enhanced grain crop yields by approximately 50% less in open-air field conditions than in earlier enclosure studies.
The observed yield stimulation is insufficient to support climate model projections that rising carbon dioxide will fully counterbalance global yield reductions driven by higher temperatures and decreased soil moisture.

Cite This Study

Long et al. (2006) studied this question.

synapsesocial.com/papers/6a01d4f20ed7d2e5335c9b60 https://doi.org/10.1126/science.1114722

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Implication

Open-air field trials reveal reduced crop yield stimulation under elevated carbon dioxide in major grain crops, indicating rising emissions may fail to offset climate-driven agricultural losses.

Food for Thought: Lower-Than-Expected Crop Yield Stimulation with Rising CO 2 Concentrations

Discussion

Member takes

Implication

Key Points

Cite This Study

Food for Thought: Lower-Than-Expected Crop Yield Stimulation with Rising CO 2 Concentrations

Discussion

Member takes

Implication

Key Points

Cite This Study

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