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Could planting trees in the desert mitigate climate change ?

Phys.org/news (JULY 31, 2013 )

Titre : Could planting trees in the desert mitigate climate change ?

As the world starts feeling the effects of increasing atmospheric carbon dioxide and consequent global temperature rise, researchers are looking for a Plan B to mitigate climate change. A group of German scientists has now come up with an environmentally friendly method that they say could do just that. The technique, dubbed carbon farming, consists in planting trees in arid regions on a large scale to capture CO2. They publish their study today in Earth System Dynamics, a journal of the European Geosciences Union (EGU).

Phys.org/news (JULY 31, 2013 )

Présentation
The new Earth System Dynamics study shows that one hectare of Jatropha curcas could capture up to 25 tonnes of atmospheric carbon dioxide per year, over a 20 year period. A plantation taking up only about 3% of the Arabian Desert, for example, could absorb in a couple of decades all the CO2 produced by motor vehicles in Germany over the same period. With about one billion hectares suitable for carbon farming, the method could sequester a significant portion of the CO2 added to the atmosphere since the industrial revolution.

But there are more advantages. Carbon farming’s price tag ranges from 42 to 63 euros per tonne of CO2, making it competitive with other CO2-reduction techniques such as carbon capture and storage. Further, after a few years, the plants would produce bioenergy (in the form of tree trimmings) to support the power production required for the desalination and irrigation systems.

Source  : European Geosciences Union

Annonce (Phys.org/news)

Page publiée le 26 juin 2021