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Sammanfattning

Nitrogen (N) fertilization increases biomass and soil organic carbon (SOC) accumulation in boreal pine forests, but the underlying mechanisms remain uncertain. At two Scots pine sites, one undergoing annual N fertilization and the other a reference, we sought to explain these responses.We measured component fluxes, including biomass production, SOC accumulation, and respiration, and summed them into carbon budgets. We compared the resulting summations to ecosystem fluxes measured by eddy covariance.N fertilization increased most component fluxes (P  0.05), but the components detected an increase in net ecosystem production (NEP) (190 (54) g C m−2 yr−1; P 

Nyckelord

canopy photosynthesis; carbon flux partitioning; carbon sequestration; carbon-use efficiency; eddy covariance; nitrogen fertilization

Publicerad i

New Phytologist
2023, volym: 239, nummer: 6, sidor: 2166-2179
Utgivare: WILEY

SLU författare

UKÄ forskningsämne

Skogsvetenskap
Markvetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.1111/nph.18939

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/122322