About KAI SHIGETAKA
About 九州森林研究
About Quercus serrata
About artificial forest
About planting density
About afforestation
About tree volume
About tree height
About breast-height diameter
About forest investigation
About crude wood
About stem volume
About Forest mensuration(=dendrometry)
About Forest tending
About コナラ
About 人工林
About 試験
About 成績