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Oral presentation

Synthesis and Cs-adsorption behavior of phyllosilicates in saponite-phlogopite system

Yamada, Hirohisa*; Yokoyama, Shingo*; Watanabe, Yujiro*; Morimoto, Kazuya*; Suzuki, Shinichi; Yaita, Tsuyoshi; Hatta, Tamao*

no journal, , 

Oral presentation

Soil warming effect on the heterotrophic respiration rate during a decadal experiment in a cool-temperate forested peatland

Takagi, Kentaro*; Liang, N.*; Aguilos, M.*; Rythi, K.*; Teramoto, Munemasa*; Kobayashi, Makoto*; Sun, L.*; Kondo, Toshiaki*; Koarashi, Jun; Atarashi-Andoh, Mariko

no journal, , 

Oral presentation

Warming effects on the quantity and quality of organic carbon in Japanese forest surface soils

Koarashi, Jun; Atarashi-Andoh, Mariko; Takagi, Kentaro*; Kondo, Toshiaki*; Teramoto, Munemasa*; Nagano, Hirohiko; Kokubu, Yoko; Takagi, Masahiro*; Ishida, Sachinobu*; Hiradate, Shuntaro*; et al.

no journal, , 

It is possible that global warming will promote the decomposition of soil organic carbon (SOC) and cause further global warming. In this study, the quantity and quality of SOC (carbon and nitrogen content, stable and radioactive carbon isotope composition, etc.) were investigated in warming and control plots at five forest sites in Japan, where long-term soil warming experiments have been conducted. Results show no remarkable difference in the quantity and quality of SOC stored in surface (0-20 cm) soils between the warming and control plots, suggesting the warming-induced increase in the soil respiration will continue over the next decade, probably due to the abundant SOC storage in Japanese forest surface soils.

Oral presentation

An Investigation of carbon dynamics in forest soils using carbon and nitrogen isotopic signatures

Atarashi-Andoh, Mariko; Koarashi, Jun; Takagi, Kentaro*; Kondo, Toshiaki*; Teramoto, Munemasa*; Nagano, Hirohiko; Kokubu, Yoko; Takagi, Masahiro*; Ishida, Sachinobu*; Liang, N.*

no journal, , 

Profiles of soil organic matter (SOM) can show striking patterns of carbon and nitrogen isotopic enrichment with increasing depth. Although various factors are involved in the distribution of stable isotope ratios in forest ecosystems, the variation in isotope ratios in SOM is caused by isotopic discrimination during microbially driven processing. Therefore, analyses of the carbon and nitrogen isotope ratios in SOM provide insights into the dynamics and accumulation of the SOM. This study measured the carbon and nitrogen isotope ratios of soil collected in warming and control plots in five forests in Japan, where long-term warming experiments have been conducted. This showed clear differences in SOM quality among the five forests. There was no remarkable difference in the isotope compositions of the warming and control plots, indicating that there has been no marked change in SOM after a decade of warming, probably due to the abundant SOM storage in Japanese forest surface soils.

Oral presentation

Long-term response and feedback of Asian terrestrial ecosystems carbon cycle to global warming

Liang, N.*; Zhang, Y.*; Chiang, P.-N.*; Lai, D.*; Teramoto, Munemasa*; Takagi, Kentaro*; Kondo, Toshiaki*; Koarashi, Jun; Wang, Y.*; Li, S.*; et al.

no journal, , 

Oral presentation

Long-term soil warming effect on soil organic carbon decomposition in Asian Monsoon forests

Teramoto, Munemasa*; Liang, N.*; Takagi, Kentaro*; Kondo, Toshiaki*; Kondo, Toshiaki*; Koarashi, Jun; Atarashi-Andoh, Mariko; Takagi, Masahiro*; Ishida, Sachinobu*; Naramoto, Masaaki*; et al.

no journal, , 

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