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sur le développement des zones arides et semi-arides

Titre : Beyond ’plant trees !’ : Research finds tree plantations encroaching on essential ecosystems

Trees planted in the tropics as part of nations’ reforestation commitments can have unintended consequences, sometimes degrading biodiversity hotspots, damaging ecosystems like grasslands, or encroaching on protected areas.

ScienceDaily (June 6, 2022)

Résumé
Trees can supply a host of benefits for animals and people, but some trees planted in the tropics may be doing more harm than good. New research finds that 92 percent of new tree plantations planted in the tropics between 2000 and 2012 were in biodiversity hotspots, and 14 percent were in arid biomes, where trees are unlikely to thrive and likely to damage existing ecosystems. Tree plantations had also encroached into 9 percent of accessible protected areas in the humid tropics, such as national parks. Especially because 45 percent of reforestation commitments to the Bonn Challenge come in the form of tree plantations, it’s critical to understand their full impact.

Story Source  : University of Maryland Baltimore County

Annonce (ScienceDaily)