Forest soils are running short of nutrients as CO2 emissions rise

Nature

by Christine L. Goodale

February 19, 2026

Analyses of a Swedish tree-ring archive suggest that increased atmospheric carbon dioxide has lowered soil-nitrogen supply, which could cap carbon storage by land ecosystems. Analyses of a Swedish tree-ring archive suggest that increased atmospheric carbon dioxide has lowered soil-nitrogen supply, which could cap carbon storage by land ecosystems.

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Originally published on Nature on 2/19/2026