Increased atmospheric CO2 and rising temperatures are expected to affect rice yields and greenhouse-gas (GHG) emissions from rice paddies1,2,3,4. This is important, because rice cultivation is one of the largest human-induced sources of the potent GHG methane5 (CH4) and rice is the world’s second-most produced staple crop6. The need for meeting a growing global food demand7 argues for assessing GHG emissions from croplands on the basis of yield rather than land area8,9,10, such that efforts to reduce GHG emissions take into consideration the consequences for food production. However, it is unclear whether or how the GHG intensity (that is, yield-scaled GHG emissions) of cropping systems will be affected by future atmospheric conditions. Here we show, using meta-analysis, that increased atmospheric CO2 (ranging from 550 to 743 ppmV) and warming (ranging from +0.8 °C to +6 °C) both increase the GHG intensity of rice cultivation. Increased atmospheric CO2 increased GHG intensity by 31.4%, because CH4 emissions are stimulated more than rice yields. Warming increased GHG intensity by 11.8% per 1 °C, largely owing to a decrease in yield. This analysis suggests that rising CO2 and warming will approximately double the GHG intensity of rice production by the end of the twenty-first century, stressing the need for management practices that optimize rice production while reducing its GHG intensity as the climate continues to change.
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Van Groenigen, K. J., Osenberg, C. W. & Hungate, B. A. Increased soil emissions of potent greenhouse gases under increased atmospheric CO2 . Nature 475, 214–216 (2011).
Lobell, D. B. & Field, C. B. Global scale climate—crop yield relationships and the impacts of recent warming. Environ. Res. Lett. 2, 014002 (2007).
Ainsworth, E. A. Rice production in a changing climate: A meta-analysis of responses to elevated carbon dioxide and elevated ozone concentration. Glob. Change Biol. 14, 1642–209 (2008).
Peng, S. et al. Rice yields decline with higher night temperature from global warming. Proc. Natl Acad. Sci. USA 101, 9971–9975 (2004).
EPA Global Anthropogenic non-CO 2 Greenhouse Gas Emissions: 1990–2020, EPA 430-R-06-003 (United States Environmental Protection Agency, 2006).
Cassman, K. G., Dobermann, A., Walters, D. T. & Yang, H. Meeting cereal demand while protecting natural resources and improving environmental quality. Annu. Rev. Environ. Resour. 28, 315–358 (2003).
Van Groenigen, J. W., Velthof, G. L., Oenema, O., van Groenigen, K. J. & van Kessel, C. Towards an agronomic assessment of N2O emissions: A case study for arable crops. Eur. J. Soil Sci. 61, 903–913 (2010).
Mosier, A. R., Halvorson, A. D., Reule, C.A. & Liu, X. J. J. Net global warming potential and greenhouse gas intensity in irrigated cropping systems in northeastern Colorado. J. Environ. Qual. 35, 1584–1598 (2006).
Grassini, P. & Cassman, K. G. High-yield maize with large net energy yield and small global warming intensity. Proc. Natl Acad. USA 109, 1074–1079 (2012).
Smith, P. et al. in Climate Change 2007: Mitigation (eds Metz, B., Davidson, O. R., Bosch, P. R., Dave, R. & Meyer, L. A.) 497–540 (Cambridge Univ. Press, 2007).
Maclean, J. L., Dawe, D. C., Hardy, B. & Hettel, G. P. Rice Almanac: Source Book for the Most Important Economic Activity on Earth 3rd edn (CABI Publishing, 2002).
Linquist, B., van Groenigen, K. J., Adviento-Borbe, M. A., Pittelkow, C. & van Kessel, C. An agronomic assessment of greenhouse gas emissions from major cereal crops. Glob. Change Biol. 18, 194–209 (2012).
Forster, P. et al. in Climate Change 2007: The Physical Science Basis (eds Solomon, S. et al.) 129–234 (Cambridge Univ. Press, 2007).
Osenberg, C. W., Sarnelle, O., Cooper, S. D. & Holt, R. D. Resolving ecological questions through meta-analysis: Goals, metrics and models. Ecology 80, 1105–1117 (1999).
Meehl, G. A. et al. in Climate Change 2007: The Physical Science Basis (eds Solomon, S. et al.) 747–845 (Cambridge Univ. Press, 2007).
Easterling, W. E. et al. in Climate Change 2007: Impacts, Adaptation and Vulnerability (eds Parry, M. L., Canziani, O. F., Palutikof, J. P., van der Linden, P. J. & Hanson, C. A.) 273–313 (Cambridge Univ. Press, 2007).
Le Mer, J. & Roger, P. Production, oxidation, emission and consumption of methane by soils: A review. Eur. J. Soil Biol. 37, 25–50 (2001).
Radmer, R. J. & Kok, B. Rate-temperature curves as an unambiguous indicator of biological activity in soil. Appl. Environ. Microb. 38, 224–228 (1979).
Yao, H. & Conrad, R. Effect of temperature on reduction of iron and production of carbon dioxide and methane in anoxic wetland rice soils. Biol. Fert. Soils 32, 135–141 (2000).
Matsui, T., Namuco, O. S., Ziska, L. H. & Horie, T. Effects of high temperature and CO2 concentration on spikelet sterility in indica rice. Field Crops Res. 51, 213–219 (1997).
Wassman, R. et al. Climate change affecting rice production: The physiological and agronomic basis for possible adaptation strategies. Adv. Agron. 101, 59–122 (2009).
Cheng, W., Yagi, K., Sakai, H. & Kobayashi, K. Effects of elevated atmospheric CO2 concentrations on CH4 and N2O emission from rice soil: An experiment in controlled-environment chambers. Biogeochemistry 77, 351–373 (2006).
Li, C. et al. Modeling greenhouse gas emissions from rice-based production systems: Sensitivity and upscaling. Glob. Biogeochem. Cycles 18, GB1043 (2004).
Sheehy, J. E., Mitchell, P. L. & Ferrer, A. B. Decline in rice grain yields with temperature: Models and correlations can give different estimates. Field Crop. Res. 98, 151–156 (2006).
Yan, X., Yagi, K., Akiyama, H. & Akimoto, H. Statistical analysis of the major variables controlling methane emissions from rice fields. Glob. Change Biol. 11, 1131–1141 (2005).
Linquist, B., Adviento-Borbe, M. A., Pittelkow, C. & van Groenigen, K. J. Fertilizer management practices and greenhouse gas emissions from rice systems: A quantitative analysis and review of the literature. Field Crop. Res. 135, 10–21 (2012).
Beach, R. H. et al. Mitigation potential and costs for global agricultural greenhouse gas emissions. Agr. Econ. 38, 109–115 (2008).
Clarke, L. et al. International climate policy architectures: Overview of the EMF 22 International Scenarios. Energ. Econ. 31, S64–S81 (2009).
Von Caemmerer, S., Quick, W. P. & Furbank, R. T. The development of C4 rice: Current progress and future challenges. Science 336, 1671–1672 (2012).
Hedges, L. V., Gurevitch, J. & Curtis, P. S. The meta-analysis of response ratios in experimental ecology. Ecology 80, 1150–1156 (1999).
Hungate, B. A. et al. Assessing the effect of elevated CO2 on soil carbon: A comparison of four meta-analyses. Glob. Change Biol. 15, 2020–2034 (2009).
Rosenberg, M. S., Adams, D. C. & Gurevitch, J. METAWIN, Statistical Software for Meta-Analysis (Sinauer, Sunderland, MA), Version 2 (2000).
Many thanks to C. Osenberg for advice on the statistical analysis and for valuable feedback on earlier versions of this manuscript. We thank W. Cheng for sharing unpublished data with us. Financial support for this study was provided by the US National Science Foundation Division of Environmental Biology (DEB-0949460), the US Department of Energy’s Office of Science (BER) through the Western Regional Center of the National Institute for Climatic Change Research at Northern Arizona University, and the Irish Research Council co-funded by Marie Curie Actions under FP7.
The authors declare no competing financial interests.
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van Groenigen, K., van Kessel, C. & Hungate, B. Increased greenhouse-gas intensity of rice production under future atmospheric conditions. Nature Clim Change 3, 288–291 (2013). https://doi.org/10.1038/nclimate1712
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