Children planting trees in Ethiopia, a country which has embraced new forests as part of its climate plan
Rather than benefiting the environment, large-scale tree planting may do the opposite, two new studies have found.
One paper says that financial incentives to plant trees can backfire and reduce biodiversity with little impact on carbon emissions.
A separate project found that the amount of carbon that new forests can absorb may be overestimated.
The key message from both papers is that planting trees is not a simple climate solution.
Over the past few years, the idea of planting trees as a low cost, high impact solution