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We examined the growth and photosynthetic responses of Japanese forest tree species to sulfur dioxide (SO2) under different nitrogen (N) loads to soil. We grew Quercus serrata, Fagus crenata, Castanopsis sieboldii, Larix kaempferi, Pinus densiflora, and Cryptomeria japonica seedlings in Andisol supplemented with N as NH4NO3 solution at 0, 20, and 50 kg ha−1 year−1. Seedlings were exposed daily to...
To obtain the basic data for evaluating the critical level of ozone (O3) to protect Japanese deciduous broad-leaved forest tree species, the growth and photosynthetic responses of Fagus crenata seedlings to O3 under different nitrogen (N) loads were investigated. The seedlings were grown in potted andisol supplied with N as NH4NO3 solution at 0, 20 or 50 kg ha−1 year−1 and were exposed to charcoal-filtered...
The objectives of this study were to clarify the influences of nitrogen (N) load on the growth and photosynthetic responses of Quercus serrata seedlings to O3 and to obtain basic data for evaluating the critical levels of O3 for protecting Q. serrata forests in Japan. The effects of O3 and/or N load on growth and photosynthetic activity of Q. serrata seedlings were investigated during the two growing...
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