The study examined the impacts of climate change on food production, particularly on rice production and growth under projected temperature rise and increased CO2 levels in the atmosphere. The study aims to develop adaptive rice production technologies which would enhance food security in Asia.
A model called SIMRIW (Simulation Model for Rice-Weather Relationships) is used in the study “to predict growth and yields of irrigated rice, based on physiological and physical processes or rice response to climate.”
Using this model, researchers can predict the effects of global warming on irrigated rice, identify characteristics and explore genetic traits that make it heat tolerant able to produce high yields. Armed with this knowledge, it will allow researchers to develop adaptive rice cultivars resilient to climate change-induced heat.
A projected mean temperature rise of 4°C can have a detrimental effect in agriculture, particularly rice yields. Rice is a major crop in Asia, providing food and work for more than 40 billion people.
Population growth and economic development are increasing demands for rice. With global warming threatens rice yields, there is a need to develop climate-adaptive rice production technologies to meet increasing requirements.
The study also discussed the following: current rice production situation in Asia, one under projected global warming; measurements of rice responses to CO2 and temperature elevations; and the development of temperature gradient chamber (TGC) to study effects of CO2 enrichment and high temperatures on rice growth and yields.
There is a need for further research on the measure of temperature and CO2 effects on rice. Modelling the growth and yield of rice in response to global warming is also needed.
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Source citation:
Horie T. (2019). Global warming and rice production in Asia: Modeling, impact prediction and adaptation. Proceedings of the Japan Academy. Series B, Physical and biological sciences, 95(6), 211–245. https://doi.org/10.2183/pjab.95.016
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