Nine years of continuous observation on soil carbon fluxes in a cool temperate forest following a massive windthrow disturbance

Sun, L.*; Liang, N.*; Hirano, Takashi*; Takahashi, Yoshiyuki*; Takagi, Kentaro*; Teramoto, Munemasa*; Ishida, Sachinobu*; Takagi, Masahiro*; Kondo, Toshiaki*; Koarashi, Jun   ; Atarashi-Andoh, Mariko  ; Yazaki, Tomotsugu*

Forests constitute approximately 30% of terrestrial ecosystems, thus playing a significant role as carbon sink. Windthrow is a typical disturbance affecting monsoon Asian forest carbon balance. Both frequency and intensity of windthrow have increased in recent years caused by climate extreme. Therefore, clarifying the response of carbon budget of forest ecosystems to the impacts of windthrow disturbance is essential for accurate prediction of the global carbon budget and forest management strategies under climate change. Tomakomai flux research site was a 45-year-old larch plantation that was severely disturbed by Typhoon Songda in 2004, resulting in the blowdown of over 90% of overstory trees. To assess the variation of soil carbon fluxes during the early succession stage, we continuously measured soil respiration from 2010 to 2019. In this presentation, we will clarify how soil carbon fluxes varied, and what environmental factors controlled the changes in soil carbon fluxes after windthrow disturbance.