Rice yields in tropical/subtropical Asia exhibit large but opposing sensitivities to minimum and maximum temperatures
- 9 August 2010
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 107 (33), 14562-14567
- https://doi.org/10.1073/pnas.1001222107
Abstract
Data from farmer-managed fields have not been used previously to disentangle the impacts of daily minimum and maximum temperatures and solar radiation on rice yields in tropical/subtropical Asia. We used a multiple regression model to analyze data from 227 intensively managed irrigated rice farms in six important rice-producing countries. The farm-level detail, observed over multiple growing seasons, enabled us to construct farm-specific weather variables, control for unobserved factors that either were unique to each farm but did not vary over time or were common to all farms at a given site but varied by season and year, and obtain more precise estimates by including farm-and site-specific economic variables. Temperature and radiation had statistically significant impacts during both the vegetative and ripening phases of the rice plant. Higher minimum temperature reduced yield, whereas higher maximum temperature raised it; radiation impact varied by growth phase. Combined, these effects imply that yield at most sites would have grown more rapidly during the high-yielding season but less rapidly during the low-yielding season if observed temperature and radiation trends at the end of the 20th century had not occurred, with temperature trends being more influential. Looking ahead, they imply a net negative impact on yield from moderate warming in coming decades. Beyond that, the impact would likely become more negative, because prior research indicates that the impact of maximum temperature becomes negative at higher levels. Diurnal temperature variation must be considered when investigating the impacts of climate change on irrigated rice in Asia.Keywords
This publication has 27 references indexed in Scilit:
- Evaluation of NASA Satellite‐ and Model‐Derived Weather Data for Simulation of Maize Yield Potential in ChinaAgronomy Journal, 2010
- Nonlinear temperature effects indicate severe damages to U.S. crop yields under climate changeProceedings of the National Academy of Sciences of the United States of America, 2009
- Impact of Climate Change on Rice Production in ThailandAmerican Economic Review, 2009
- Bootstrap-Based Improvements for Inference with Clustered ErrorsThe Review of Economics and Statistics, 2008
- Phenotyping Parents of Mapping Populations of Rice for Heat Tolerance during AnthesisCrop Science, 2008
- Observational evidence of solar dimming: Offsetting surface warming over IndiaGeophysical Research Letters, 2007
- Changes in diurnal temperature range and national cereal yieldsAgricultural and Forest Meteorology, 2007
- Integrated model shows that atmospheric brown clouds and greenhouse gases have reduced rice harvests in IndiaProceedings of the National Academy of Sciences of the United States of America, 2006
- Maximum and minimum temperature trends for the globe: An update through 2004Geophysical Research Letters, 2005
- Response of Rice to Solar Radiation and Temperature Estimated from International Yield Trials 1Crop Science, 1984