Weizmann Institute study suggests that rising carbon dioxide levels might cause forests to spread into dry environments
Missing: around 7 billion tons of carbon dioxide (CO2), the main greenhouse gas charged with global warming. Every year, industry releases about 22 billion tons of carbon dioxide into the atmosphere. And every year, when scientists measure the rise of carbon dioxide in the atmosphere, it doesn’t add up – about half goes missing. Figuring in the amount that could be soaked up by oceans, some 7 billion tons still remain unaccounted for. Now, a study conducted at the edge of Israel’s Negev Desert has come up with what might be a piece of the puzzle.
A group of scientists headed by Prof. Dan Yakir of the Weizmann Institute’s Environmental Sciences and Energy Department found that the Yatir forest, planted at the edge of the Negev Desert 35 years ago, is expanding at an unexpected rate. The findings, published in the current issue of Global Change Biology, suggest that forests in other parts of the globe could also be expanding into arid lands, absorbing carbon dioxide in the process.
Alex Smith | EurekAlert!
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