日本列島における木本植物種数分布と温度環境

概要

論文の詳細を見る
The number or woody plant species in a unit plant community of various forest zones throughout the Japan archipelago were compared using previously accumulated data relating to temperature gradients, mainly by the Warmth Index (WI). The distribution pattern of species number against temperature gradient showed a humped shape, peaking at 85 /℃・month and near the boundary zone between evergreen broad-leaved and deciduous broad-leaved forest zones. Namely, tree species diversity was lower in the forest zones both below and above the boundary zone. Four ecological factors, i. e., the overlap effect in two forest zones of evergreen and deciduous broad-leaved forests, the decrease of species in evergreen broad-leaved forest due to man, the effect of environmental diversity, and the effect of geographical history of the archipelago, were discussed in relation to the formation of this feature. Evidence indicated the most likely influential factor to be the temperature ascent during the isolation of the archipelago after the Ice Age.
日本生態学会の論文
1988-08-31