Photosynthetic Production in Abies veitchii Advance Growths Growing under Different Light Environmental Conditions (I) Seasonal Growth, Crown Developement, and Net Production
天然更新作業による上層木の伐採は，前生稚樹の光環境を大きく変化させる。前生稚樹が後継樹として順調な生育を続けていくには，こうした環境の変化に順応しなくてはならない。ここでは上層木の皆伐による光環境の変化にすでに順応し生育しているシラベ前生稚樹および皆伐されなかった林内の稚樹を対象に，光合成生産に関する生態生理的特性について，一連の研究を行なった。In the sub-alpine natural coniferous forests in the central Honshu, the stands abundant advance growths of Abies veitchii LINDL. on the forest floor are found frequently. When the clear-cutting of upper story with expecting the natural regeneration is made, these advance growths having been under deep shade will be exposed directly to the severe radiation. The success of regeneration may depend on physiological adaptability of them to the open conditions. In this series of studies, I try to make clear the difference in some eco-physiological characters relating to photosynthetic production among advance growths of A. veitchii having been adapted to various light conditions
