@article{oai:nagasaki-u.repo.nii.ac.jp:00015563, author = {Itow, Syuzo and Jinno, Nobumitsu and Kitazawa, Yuzo and Yamaki, Toshio}, issue = {2}, journal = {Journal of UOEH, 産業医科大学雑誌}, month = {Jun}, note = {Fifty forest stands and sixty plant species were ordinated by a reciprocal averaging (RA) method to extract the major vegetation patterns of the forest in northwestern Kitakyushu City and nearby areas. The RA stand ordination on the first and second axes revealed three gradients of vegetation. They are the gradienLs (1) from the Quercus serrata-dominatcd forest to the Machilus thunbergii- or Aphananthe aspera-dominated forest, (2) from the Quercus- to the Castanopsis cuspidata-dominated forest, and (3) from the Aphananthe- or the Machilus- to the Casianopsis-dominated forest. The first two gradients showed high correlations of the stand RA scores to the canopy height and to the number of species found in the stand, but the third one did not. The former two, therefore, were referred toas the successional series of forests on the moist (bottomland) habitat and that on the less moist (foothill) one, respectively, and the third as the environmental gradient from moist to less moist habitats in matured forests. The RA species ordination showed the distribution center of each species in the above rnentioned patterns of the forest vegetation(Received 15 February 1984), 医生ケ丘をふくむ北九州市北西部および近隣地において, 森林群落50スタンドを調査した. それらを優占種により分類すると, コナラ群落, タブノキ群落, ムクノキ群落, シイノキ群落であった. 50スタンド, 60種の群落資料を反復平均法により解析した結果, 次の三つの植生の系列が明らかとなった. (i)コナラ群落一タブノキ群落-ムクノキ群落, (ii)コナラ群落-シイノキ群落, (iii)タブノキおよびムクノキ群落-シイノキ群落. 前2系列は樹高の増大および種類の増加と有意の相関をもつ森林の群落遷移の系列であり, 第3の系列ではそれらと相関がなく, 環境傾度上の系列であることが明らかとなった., Journal of UOEH, 6(2), pp.149-162; 1984}, pages = {149--162}, title = {Vegetation Gradients of Forests in Northwestern Kitakyushu City and Nearby Areas}, volume = {6}, year = {1984} }