The counting of 9.9 billion trees could help manage climate credits and nature restoration uni_copenhagen nature
emissions is gaining steam among global corporations. Carbon offset credits allow companies to emit a given amount of COBut with billions upon billions of trees across the planet, keeping track of how many are added and how many are disappearing is tough, to say the least.
"There are many indications that carbon credit trading will become more and more extensive in the future—not just for earth's forests, but for billions of trees beyond forests. Therefore, it is critical for us to be able to monitor whether carbon trading reflects the actual number of trees in nature and whether it has a positive effect on climate. This is what we are coming with a solution to," he says.
The mapping shows that the Sahel, one of the world's driest regions without being outright desert, is home to nearly 10 billion trees. These trees currently store 840,000,000 tons of carbon according to the researchers' measurements, a number based on the weight of individual trees. "Over the past 10 to 15 years, considerable resources have been spent on large-scale tree planting projects in arid regions of the world, including those financed by the World Bank. Have they worked? Have the trees survived? Our method can be used to help map this," says Rasmus Fensholt, adding that the next research project in the pipeline will be to look at how the number of trees has evolved over past decades.
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