@article{oai:iwate-u.repo.nii.ac.jp:00009041,
 author = {國崎, 貴嗣 and 関原, 芙美子 and 山崎, 遥 and 白旗, 学},
 journal = {岩手大学農学部演習林報告},
 month = {Jun},
 note = {アカマツ若齢林と高齢林を対象に，林木の地上部サイズ指標と葉量指数との関係を調べた。順序ロジスティック回帰分析の結果，若齢林では葉量指数の説明変数として樹高，枝下高，樹冠長率を含むモデルのAICが小さい傾向にあった。枝下高，樹冠長率が高いほど若齢林の林木葉量指数は高くなった。一方，高齢林では説明変数なしのモデルがAIC最小であった。, We selected principal variables correlated to the leaf mass index of young and old Pinus densiflora trees. Crown- and stem-related variables were used in ordinal logistic regression procedures to model the leaf mass index of individual trees in young and old pine stands. Ordinal logistic regression analysis revealed that the Akaike information criterion (AIC) of models using the height, branch height, and live crown ratio as predictor variables were less than those of models without these variables as predictor variables in the young pine stand. The branch height and live crown ratio were positively correlated with the leaf mass index of the young individual trees. However, the AIC of the null model was the least of the 31 models examined in the old pine stand.},
 pages = {37--45},
 title = {アカマツ林木の地上部サイズと葉量指数との関係:若齢林と高齢林の比較},
 volume = {45},
 year = {2014}
}