Go to AGRIS search. Eurasian Journal of Forest Research - Hokkaido University (Feb 2005). Plant b... more Go to AGRIS search. Eurasian Journal of Forest Research - Hokkaido University (Feb 2005). Plant biomass and productivity of Larix gmelinii forest ecosystems in Northeast China: Intra-and inter-species comparison. ... This relationship was also influenced by forest management. ...
The effects of infection by the ectomyeorrhiza, Pisolithus tinctorius (Pt), on the growth and pho... more The effects of infection by the ectomyeorrhiza, Pisolithus tinctorius (Pt), on the growth and photosynthetic characteristics ofPinus densiflora, P. koraiensis and Larix kaempferi were studied. Seedlings of these species were grown at ambient (36 pa) and elevated (72 pa) CO 2 concentrations [CO 2 ] with and without Pt infection. After 180 days, Pt inoculation had given rise to significant increases in dry mass and stem diameter of each species at both [CO 2 ], compared with non-inoculated (control) seedlings. Moreover, Pt inoculation at elevated [CO 2 ] (72 Pa) significantly increased ectomycorrhizal development. The phosphorus (P) concentration in needles inoculated with Pt was significantly higher than in non-inoculated seedlings at both [CO 2 ] concentrations. The maximum net photosynthetic rate at saturated CO 2 concentration (P max ) and the carboxylation efficiency (CE) of each species inoculated with Pt were higher than for non-inoculated seedlings at both [CO 2 ] concentratio...
Soil respiration is an important component process of the carbon cycle (Schlesinger and Andrews 2... more Soil respiration is an important component process of the carbon cycle (Schlesinger and Andrews 2000). It is derived from both soil microbial respiration and plant root respiration (Luo and Zhou 2006). In boreal forests, substrate supply, soil temperature, and soil moisture control the soil respiration (Luo and Zhou 2006). The litterfall on the soil surface was found to have a
The Science of the total environment, Jan 15, 2018
The primary objective of this study was to describe parameters related to the leaf biochemical as... more The primary objective of this study was to describe parameters related to the leaf biochemical assimilation capacity of photosynthesis, such as the maximum rates of carboxylation (V) and electron transport (J), as a function of the leaf nitrogen content throughout a canopy of Siebold's beech and Japanese oak grown under elevated ozone (O) conditions during a growing season. To this end, we investigated the relationship between photosynthetic traits and leaf nitrogen content in various canopy positions of two tree species under free-air O exposure (60 nmol mol, during daylight hours) in June, August, and October 2012. We observed O-induced reduction in V and J without reduction of leaf nitrogen content in both tree species. In Siebold's beech, V and J in leaves with higher N were largely decreased by O from August, while little effect of O was observed in leaves with lower N. On the other hand, there was no difference in the extent of O-induced reduction in V and J across the...
Go to AGRIS search. Eurasian Journal of Forest Research - Hokkaido University (Feb 2005). Plant b... more Go to AGRIS search. Eurasian Journal of Forest Research - Hokkaido University (Feb 2005). Plant biomass and productivity of Larix gmelinii forest ecosystems in Northeast China: Intra-and inter-species comparison. ... This relationship was also influenced by forest management. ...
The effects of infection by the ectomyeorrhiza, Pisolithus tinctorius (Pt), on the growth and pho... more The effects of infection by the ectomyeorrhiza, Pisolithus tinctorius (Pt), on the growth and photosynthetic characteristics ofPinus densiflora, P. koraiensis and Larix kaempferi were studied. Seedlings of these species were grown at ambient (36 pa) and elevated (72 pa) CO 2 concentrations [CO 2 ] with and without Pt infection. After 180 days, Pt inoculation had given rise to significant increases in dry mass and stem diameter of each species at both [CO 2 ], compared with non-inoculated (control) seedlings. Moreover, Pt inoculation at elevated [CO 2 ] (72 Pa) significantly increased ectomycorrhizal development. The phosphorus (P) concentration in needles inoculated with Pt was significantly higher than in non-inoculated seedlings at both [CO 2 ] concentrations. The maximum net photosynthetic rate at saturated CO 2 concentration (P max ) and the carboxylation efficiency (CE) of each species inoculated with Pt were higher than for non-inoculated seedlings at both [CO 2 ] concentratio...
Soil respiration is an important component process of the carbon cycle (Schlesinger and Andrews 2... more Soil respiration is an important component process of the carbon cycle (Schlesinger and Andrews 2000). It is derived from both soil microbial respiration and plant root respiration (Luo and Zhou 2006). In boreal forests, substrate supply, soil temperature, and soil moisture control the soil respiration (Luo and Zhou 2006). The litterfall on the soil surface was found to have a
The Science of the total environment, Jan 15, 2018
The primary objective of this study was to describe parameters related to the leaf biochemical as... more The primary objective of this study was to describe parameters related to the leaf biochemical assimilation capacity of photosynthesis, such as the maximum rates of carboxylation (V) and electron transport (J), as a function of the leaf nitrogen content throughout a canopy of Siebold's beech and Japanese oak grown under elevated ozone (O) conditions during a growing season. To this end, we investigated the relationship between photosynthetic traits and leaf nitrogen content in various canopy positions of two tree species under free-air O exposure (60 nmol mol, during daylight hours) in June, August, and October 2012. We observed O-induced reduction in V and J without reduction of leaf nitrogen content in both tree species. In Siebold's beech, V and J in leaves with higher N were largely decreased by O from August, while little effect of O was observed in leaves with lower N. On the other hand, there was no difference in the extent of O-induced reduction in V and J across the...
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Papers by Takayoshi Koike