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Long-term warming effect on soil carbon fluxes in a red pine forest in Tsukuba

Teramoto, Munemasa*; Liang, N.*; Jiye, Z.*; Koarashi, Jun   ; Kondo, Toshiaki*; Atarashi-Andoh, Mariko  ; Aramaki, Takafumi*; Zhao, X.*

Forest soils are a large source for CO$$_{2}$$ and sink for CH$$_{4}$$. Understanding long-term response of these soil carbon fluxes to warmer environment is the key to mitigation and adaptation for future climate change. To examine the long-term response of CO$$_{2}$$ flux to global warming in Asian monsoon forests, we set multi-channel automated chamber measurement system in a red pine forest in Tsukuba. Half of the chambers were artificially warmed by infrared heaters. Recently, we started continuous measurement of soil CH$$_{4}$$ flux using a control unit with CH$$_{4}$$ analyzer. Results showed that soil temperature is the primary factor controlling soil CO$$_{2}$$ fluxes, whereas soil moisture is the main factor controlling soil CH$$_{4}$$ uptake in our study site.

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