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Recent research published in Nature Geoscience has raised alarm over proposals to plant trees in Arctic regions such as Alaska, Greenland, and Iceland for carbon storage. The study, led by Marc Macias-Fauria, asserts that this practice could exacerbate climate issues instead of mitigating them. According to the research, snow-covered Arctic ground reflects about 75% of solar radiation back into space, but trees can darken the surface, causing increased heat absorption.
Furthermore, the study highlights that Arctic soils contain more carbon than all the trees on Earth combined. The introduction of trees could stimulate microbial activity in the soil, leading to the breakdown of ancient carbon stores and releasing more greenhouse gases into the atmosphere.
Indigenous communities that depend on the tundra for their traditional livelihoods could also be adversely affected by these initiatives. The findings suggest that preserving existing ecosystems and protecting large grazing animals, like caribou, may be a more effective strategy for Arctic conservation.