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Better Farming Ontario Featured Articles

Better Farming Ontario magazine is published 11 times per year. After each edition is published, we share featured articles online.


Global warming speeds tree growth

Tuesday, October 2, 2012

A 22-year study of 55 mixed hardwood forest plots has yielded unexpected results. The trees appear to have accelerated growth rates, and are probably growing faster now than they have ever done for the past 225 years (the age of the oldest trees in the study).

Geoffrey Parker, a forest ecologist at the Smithsonian Environmental Research Center in Edgewater, Md., points out that, over the course of the study, the concentration of carbon dioxide in the forest air has risen by 12 per cent, the average temperature has increased by three-tenths of a degree and the growing season has lengthened by 7.8 days.

Higher concentrations of carbon dioxide and a longer growing season could create favourable conditions for agriculture in the northern hemisphere, and larger trees could become a carbon sink for excess atmospheric carbon dioxide created by burning fossil fuels. BF

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Image by PublicDomainPictures from Pixabay First Tapping Ceremonies are a symbolic way to celebrate the beginning of every new maple syrup season. To celebrate in the Grey Bruce and District, area maple syrup producers have invited several local politicians and political candidates... Read this article online

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