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九州大学北海道演習林における天然生落葉広葉樹林について，種組成に基づいた群落分類がなされた．代償植生としての植生タイプはシラカンバ―ミズナラ群落，自然植生としてのサワシバ―ミズナラ群集，アサダ―ミズナラ群集，サワシバ―ミズナラ群集とアサダ―ミズナラ群集の中間的特性を持つ群落，ハシドイ―ヤチダモ群集の5タイプが認められた．植生タイプ毎の常在度級表から，アサダ―ミズナラ群集とハシドイ―ヤチダモ群集にお...いて，これら群集を特徴付ける高常在度の種群など，8種群が認められた．各植生タイプの立地環境（標高，斜面方位，斜面傾斜）についての比較を行った結果，植生タイプによる垂直分布域に差異は認められなかった．斜面方位と斜面傾斜は，サワシバ―ミズナラ群集とアサダ―ミズナラ群衆とでは異なった分布傾向が認められた．
Species composition and topographical factors were studied at 65 stands in deciduous broad-leaved forests in the Kyushu University Hokkaido Forest (except Salix forests along streams). These stands were classified into five types (Types A to E). Type A was typical secondally forest, Betula plalyphylla -Quercus mongolica ver. grosseserrata community. Type B was Carpino-Quercetum grosseserratae association, and Type D was Ostryo-Quercetum grosseserratae association. Type C was a community that had intermediate species composition between Types B and D. Type E was Syringo-Fraxinetum mandshuricae association. Dominant species in most stands of Types B, C and D were Quercus mongolica ver. groosseserrata. Species were divided into 8 groups (Groups a to h). Group a was composed of common species from five vegetation types. Types D and E were characterized by Groups f and h, respectively. Type B stands distributed from southern to western slopes and on gentler slopes of other aspects. Most stands of Type D distributed from steeper north to eastern slopes, Type C stands were located at intermediate positions between Type B and D stands.続きを見る
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