Atmospheric deposition, CO₂, and change in the land carbon sink.

ABSTRACT: Concentrations of atmospheric carbon dioxide (CO₂) have continued to increase whereas atmospheric deposition of sulphur and nitrogen has declined in Europe and the USA during recent decades. Using time series of flux observations from 23 forests distributed throughout Europe and the USA, and generalised mixed models, we found that forest-level net ecosystem production and gross primary production have increased by 1% annually from 1995 to 2011. Statistical models indicated that increasing atmospheric CO₂ was the most important factor driving the increasing strength of carbon sinks in these forests. We also found that the reduction of sulphur deposition in Europe and the USA lead to higher recovery in ecosystem respiration than in gross primary production, thus limitin

SUBMITTER: Fernandez-Martinez M 

PROVIDER: S-EPMC5574890 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature