@article{oai:kpu.repo.nii.ac.jp:00005067,
 author = {梶原, 幹弘 and Kajihara, Mikihiro},
 journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture},
 month = {Nov},
 note = {資料木は, 生育段階を異にするいくつかのスギ, ヒノキの人工林より集めた。それらを伐倒後, 陰陽区分をした樹冠の位置に関係づけて, 幹断面積生長量の垂直的配分を調べた。その結果, 孤立木やきょくたんに短い樹冠の木は別として, 幹断面積生長量は梢端から陽樹冠の基部位置まで増大し, それ以下では陰樹冠の存在には関係なくほぼ一定で推移するという一つの基本的な型があることが分った。この型からすると, 陽樹冠は幹材積生長量に寄与しているが, 陰樹冠は無関係ということになる。このような型に基づくモデルによって幹材積生長量を推定してみたところ, その誤差はそう大きなものではなかった。これらの結果からして, 幹材積生長量の指標として陽樹冠部のみの樹冠量を用いるのが合理的であるといえよう。, Sample trees were gathered from some plantations of Cryptomeria japonica and of Chamaecyparis obtusa with different growing stages. After they were felled, the vertical distributions of stem cross-sectional area increment were investigated in relation to the position of crown distinguishing between sunny and shaded part. There was one basic pattern common to both tree species, that is, the increment of stem cross-sectional area increased from the tip to the base of sunny part and bore approximately the same below that point regardless of the existence of shaded one, except particular trees which were isolated or extremely shortcrowned. This pattern proves that the sunny part of crown is contributable to stem volume increment, but the shaded part is not so. When stem volume increments were estimated by the model based upon this pattern, the errors were not so large. Judging from these results, it may be reasonable to use the crown dimensions of only sunny part as the indicator of stem volume increment.},
 pages = {63--72},
 title = {スギ, ヒノキにおける樹冠位置に関係しての幹材積生長量の垂直的配分とそのモデル(林学部門)},
 volume = {33},
 year = {1981},
 yomi = {カジハラ, ミキヒロ}
}