The study focuses on what may happen to wheat production globally, and also global prices for the grain. Read more at straitstimes.com.
SINGAPORE - Global warming is likely to boost crop yields in some countries, helped in part by higher carbon dioxide levels, which increases plant growth and helps them become more efficient in using water.But there's a catch - despite higher yields, future global wheat price spikes are set to become more severe, a recent study by an international team of researchers found.
An agrometeorologist looks at the relationship between weather and climate to crop and livestock production and soil management. High temperatures hurt wheat yields, but higher CO2 levels can offset this, the authors said in the study published in the journal One Earth. Plants need CO2 as part of photosynthesis to make sugars. More CO2 tends to boost plant productivity, at least up to a point, they said.
Prof Zhang explained that the team ran complex computer models simulating a large number of wheat-growing seasons that mimicked all combinations of climate stresses at present climate conditions and for a 2 deg C warmer climate.The data from these two climate ensembles were then added to separate wheat yield and economic models.
Dr Pep Canadell, executive director of the Global Carbon Project and who was not involved in the wheat study, told ST:"All computer models have a strong CO2 fertilisation effect, such as crop models, forest models, et cetera. So we expect that CO2 alone will lead to - and has led to - higher crop yields.
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