Low historical nitrogen deposition effect on carbon sequestration in the boreal zone

K. Fleischer, D. Wårlind, M.K. van der Molen, K.T. Rebel, A. Arneth, J.W. Erisman, M.J. Wassen, B. Smith, C.M. Gough, A. Margolis, A. Cescatti, L. Montagnani, A. Arain, A.J. Dolman

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Nitrogen (N) cycle dynamics and N deposition play an important role in determining the terrestrial biosphere's carbon (C) balance. We assess global and biome-specific N deposition effects on C sequestration rates with the dynamic global vegetation model LPJ-GUESS. Modeled CN interactions are evaluated by comparing predictions of the C and CN version of the model with direct observations of C fluxes from 68 forest FLUXNET sites. N limitation on C uptake reduced overestimation of gross primary productivity for boreal evergreen needleleaf forests from 56% to 18%, presenting the greatest improvement among forest types. Relative N deposition effects on C sequestration (dC/dN) in boreal, temperate, and tropical sites ranged from 17 to 26 kg C kg N
Original languageEnglish
JournalJournal of Geophysical Research. Biogeosciences
Issue number120
DOIs
Publication statusPublished - 2015

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