Increasing trends of soil greenhouse gas fluxes in Japanese forests from 1980 to 2009.

ABSTRACT: Forest soils are a source/sink of greenhouse gases, and have significant impacts on the budget of these terrestrial greenhouse gases. Here, we show climate-driven changes in soil GHG fluxes (CO₂ emission, CH₄ uptake, and N₂O emission) in Japanese forests from 1980 to 2009, which were estimated using a regional soil GHG model that is data-oriented. Our study reveals that the soil GHG fluxes in Japanese forests have been increasing over the past 30 years at the rate of 0.31 Tg C yr⁻² for CO₂ (0.23 % yr⁻¹, relative to the average from 1980 to 2009), 0.40 Gg C yr⁻² for CH₄ (0.44 % yr⁻¹), and 0.0052 Gg N yr⁻² for N₂O (0.27 % yr⁻¹). Our estimates also show large interannual variations in soil GHG fluxes. The increasing trends and large interannual variations in soil GHG fluxes seem to substantia

SUBMITTER: Hashimoto S 

PROVIDER: S-EPMC3216597 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature