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Published on: June 30, 2020
The impact of anthropogenic nitrogen deposition on global forests: Negative impacts far exceed the carbon benefits
1Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, SLU, Umeå, Sweden.
Abstract:
Humans have drastically altered the nitrogen (N) cycle during the past century, enriching ecosystems from the tropics to the tundra with unpresented inputs of novel nitrogen. The study by Schulte-Uebbing et al. (2021) quantified the impact of atmospheric N deposition on C uptake by forests globally, and weighed this climate benefit against the global warming impact of N2 O emissions. A major conclusion was that the C benefits of atmospheric deposition in global forests are smaller than previously estimated (only 41 Tg C year-1 ), accounting for only 2% of the net annual forest C uptake.
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