About KOIZUMI AKIO
About 北大 大学院農学研究院
About 樹木医学研究
About stress (physiology)
About resistance (endure)
About land
About street tree
About moment of inertia
About distribution
About root system
About breast-height diameter
About cross section (area)
About plant damage
About wind damage
About environmental stress
About environmental stress resistance
About distribution of root system
About basal area
About tree-uprooting
About forest land
About tree (plant)
About forest areas
About Forest tending
About 環境ストレス
About 樹林地
About 街路
About 力学