资源环境科技发展态势分析平台

By Adam Vaughan

Sharon Seretlo/Gallo Images via Getty Images

In January, the World Economic Forum, backed by US president Donald Trump, announced the One Trillion Trees initiative to plant or protect a trillion trees by 2030, bolstering the estimated 3 trillion that already exist. The scheme joins existing reforestation efforts such as the “Trillion Trees” project launched by conservation groups in 2017.

One Trillion Trees didn’t respond to requests for comment on progress, but a US version of its website says that 855 million trees have been pledged by US-based authorities and other bodies. It is unclear how many of those have …