Archived tree cores reveal why boreal forests are getting starved for nitrogen

PHYSorg
Feb 19, 2026, 8:27 am125 pts
Despite decades of industrial deposition, nitrogen availability in the boreal forest is steadily declining. In a new study published in Nature, researchers from the Swedish University of Agricultural Sciences using decades of unique, stored data have found that atmospheric CO₂ is the main driver.

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Archived tree cores reveal why boreal forests are getting starved for nitrogen

PHYSorg

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