産業医科大学構内と付近の自然林の蘇苔類の研究

Bryophyte communities were studied at six study sites on and near the UOEH campus in 1981 and 1982. The sites are different in habitat conditions ranging from a little disturbed natural forest of Castanopsis sieboldii, through secondary forest, lawn on slope, lawn on flat site and shrubbery, to cracks between the concrete slabs. The number of bryophyte species decreased, with increasing disturbance, from 23 through 18, 12, 7 and 4, to 2 in the six study sites respectively. Of the 23 species occurring in the natural forest, 17 were exclusive to the forest site and the remaining 6 were common to the secondary forest. The species occurring on the UOEH campus excepting for those in the secondary forest were the pioneer ones or those which can grow under heavily human impact conditions. They were Bryum capillare, Ceratodon purpureus, Weissia controversa Barbula unguiculata, Bryum argenteum and Brachymenium exile. Bryum argenteum and Brachymenium exile which were distributed even in the cracks between the concrete slabs of the pavement created 3 years ago. In the lawn area, both number of species and abundance are larger on the slope than on the flat site. On the slope, Barbula unguiculata is distributed through a wide range of the environment. But others are abundant on the slope facing the north.(Received 11 August 1982)北九州市の人為による生態系の破壊と再生の系列に沿って6種の生態系型を調査地に選び蘇苔類の種類組成, 常在度, 被度を調べて比較研究した. 種数は産業医科大学構内のコンクリート舗装路の割れ目(2種), 低木の植込み(4種), 平坦地の芝生(7種), 斜面の芝生(12種), 構内の二次林(18種), 遠賀町のシイ自然林(23種)の順に増加した. 苔類は二次林(3種)と自然林(10種)のみに出現した. 舗装路の割れ目にはギンゴケ, ホソウリゴケが進入し, 植込みと芝生にはそれ以外にハリガネゴケ, ヤノウエノアカゴケ, ツチノウエノコゴケ, ネジクチゴケなどがみられる. これらは群落遷移における先駆的な種類であると共に, 大気汚染などの人為影響にもよく耐えうる. 芝生では平坦地よりも, 特に北向きの斜面に種数, 量とも多い. シイ自然林の蘇苔類はその大部分が山地など人為影響の最も少ない地域に出現する種類である. 産業医大構内では, 残存二次林の内に自然林との共通種が6種あったが, それ以外の地域には, シイ自然林との共通種は全く出現していない

産業医科大学構内と付近の自然林の蘇苔類の研究

Bryophyte communities were studied at six study sites on and near the UOEH campus in 1981 and 1982. The sites are different in habitat conditions ranging from a little disturbed natural forest of Castanopsis sieboldii, through secondary forest, lawn on slope, lawn on flat site and shrubbery, to cracks between the concrete slabs. The number of bryophyte species decreased, with increasing disturbance, from 23 through 18, 12, 7 and 4, to 2 in the six study sites respectively. Of the 23 species occurring in the natural forest, 17 were exclusive to the forest site and the remaining 6 were common to the secondary forest. The species occurring on the UOEH campus excepting for those in the secondary forest were the pioneer ones or those which can grow under heavily human impact conditions. They were Bryum capillare, Ceratodon purpureus, Weissia controversa Barbula unguiculata, Bryum argenteum and Brachymenium exile. Bryum argenteum and Brachymenium exile which were distributed even in the cracks between the concrete slabs of the pavement created 3 years ago. In the lawn area, both number of species and abundance are larger on the slope than on the flat site. On the slope, Barbula unguiculata is distributed through a wide range of the environment. But others are abundant on the slope facing the north.(Received 11 August 1982)北九州市の人為による生態系の破壊と再生の系列に沿って6種の生態系型を調査地に選び蘇苔類の種類組成, 常在度, 被度を調べて比較研究した. 種数は産業医科大学構内のコンクリート舗装路の割れ目(2種), 低木の植込み(4種), 平坦地の芝生(7種), 斜面の芝生(12種), 構内の二次林(18種), 遠賀町のシイ自然林(23種)の順に増加した. 苔類は二次林(3種)と自然林(10種)のみに出現した. 舗装路の割れ目にはギンゴケ, ホソウリゴケが進入し, 植込みと芝生にはそれ以外にハリガネゴケ, ヤノウエノアカゴケ, ツチノウエノコゴケ, ネジクチゴケなどがみられる. これらは群落遷移における先駆的な種類であると共に, 大気汚染などの人為影響にもよく耐えうる. 芝生では平坦地よりも, 特に北向きの斜面に種数, 量とも多い. シイ自然林の蘇苔類はその大部分が山地など人為影響の最も少ない地域に出現する種類である. 産業医大構内では, 残存二次林の内に自然林との共通種が6種あったが, それ以外の地域には, シイ自然林との共通種は全く出現していない

北九州地域における着生蘇苔類の金属含有量

Metal contents in epiphytic bryophytes growing at Yahata Nishi-ku, Kitakyushu City and its vicinity were measured. Measurements were made both on the contents in the plant body of a single species Clastobryella kusatsuensis and on those of the whole bryophytic community. Contents of eight elements (Fe, Zn, Mn, Cr, Pb, Ni, Cu and Cd) decrease generally with increase in distance from the center of the industrialized area. No such marked regional difference was seen in the contents of Ca and Mg. The ratios of seven klnds of elements (Fe, Mn, Cr. Pb, Ni, Cu and Cd) in bryophytes almost coincide with those in airborne particulates. It was proved that C. kusatsuensis and communities of bryophytes can be an indicator of air pollution by metals.(Received 12 November 1982)高度開発地域での企属による環境治染を探る基礎資料を得る目的のため, 北九州市八幡西区とその周辺地域の着生薊苔類の体内金属量を, コモチイトゴケ1種および群落全体についで測定した. Fe, Zn, Mn, Cr, Pb, Ni, Cu, Cdの量は工業の中心地域から遠ざかる程減少する傾向を示したが, Ca, Mgは地域的な差が見られなかった. Fe, Mn, Cr, Pb, Ni, Cu, Cdの蘇苔類体内の含有量の比率は, 大気中の比率とほぼ一致した. コモチイトゴケ1種, 薊苔類群落全体について, 大気の金属汚染の生物指標となることが示唆された

産業医科大学の構内および周辺地域の植生概観, および構内の環境保全について

The Kitakyushu City area, in which the University of Occupational and Envionmental Health, Japan (UOEH) campus lies, is situated in the region of the evergreen broad-leaf, or laurel-leaf, forests. Our studies on relict forest stands revealed that the original forest communities in the area were Cyrtomio-Litseetum japonicae and Euonymo-Pittos-poretum tobirae in the coastl area, Arisemato ringentis-Machiletum thunbergii in the bottomland, Symploco-Castanopsietum sieboldii and Ardisio-Castanopsietum sieboldii in. foothill area, and Distylio-Cyclobalanopsietum stenophyllae, Actinodaphnetum lancifoliae and Skimmio-Cyclobalanopsietum acutae on the mountain slopes. The secondary forests in the area are Castanopsis-Cyclobalanopsis coppice of sprout origin, red-pine forest and deciduous forests of various dominants. The original forest on the UOEH campus is assumed to be Symploco-Castanopsietum sieboldii, an evergreen broad-leaf forest, some 25m high and I m dbh in canopy trees. The secondary forest on the campus is doin inated by Quercus serrata, accompanied by Rhus succedanea, Platycarya strobilacea and Castanopsis cuspidata var. sieholdii. A small wetland near the north gate is dominated by Typha angustata. Slopes on the campus, which were created by cutting-off or fillingup of the ground, are invaded by Miscanthus sinensis, Solidago altissima (alien) and many other herbaceous plants. One hundred and thirty-six species of flowering plants and eight specles of ferns were recorded from the campus. Conservation problems are discussed from the standpoint of vegetation science.1)医生ケ丘をふくむ北九州市西部は, 全域が照葉樹林域にある. 残存林分の調査によって, 沿岸地帯-内陸の原植生が推定され, 医生ケ丘一帯はスダシイ-ミミズバイ群集域であることが明らかとなった. 2)現存植生の二次林は, シイーカシ萌芽林とカラスザンショウ群落が優勢である. 医生ケ作の二次林では, コナラが優占し, ハゼノキ・ノグルミが常に出現する. 向陽地では林床にウラジロまたはコシダが優占している. 3)湿地にはガマ・ヒメガマ・イグサが優占する. 4)医生ケ丘で種子植物131種, シダ植物8種を記録した. 5)大学構内の緑化について, 植生学の立場から付言し, 特に残存林および西北部の湿原群落の保存の重要性を指摘した

北九州市北西部および近隣地の植生

The phytosociological study on vegetation was done in northwestern Kitakyushu City and its vicinities. Kitakyushu City is located in the northern region of Fukuoka Prefecture. The following I 3 associations or communities were identified and described, Natural forests were as follows; (1) Euonymo-Pittosporetum tobirae, (2) Cyrtomio-Litseetum japonicae, (3) Aphananthe , aspera Community, (4) Arisaemeto ringentis-Machiletum (Perseetum) thunbergii, (5) Symploco glaucae-Castanopsietum sieboldii, (6) Carpinus tschonoskii-Castanopsis cuspidata var. sieboldii Community, (7)Distylio-Cyclobalanopsietum, (8) Skimmio-Quercetum acutae Substitutional forests and afforestations were (9) Castanopsis coppice forest, (10) Pinus thunbergii afforestation, (13) Phyllostachys heterocycla var. pubescens afforestation. The number of character species in some associations we studied was fewer than the same ones found in Nagasaki Prefecture, western Kyushu. The standing vegetation map was drawn on the scale of l:50,000. Small natural forests were remained on particular sites. Secondary forests and afforestations of Cryptomeria japonica and Chamaecyparis obtusa were distributed widely on hills and mountains. The ranges of forests have been contracted by the expansion of urban districts and orchards. Urban and industrial areas were the most predominant landscapes in the study area. (Received 28 February 1985)北九州市北西部およぴ近隣地の森林植生82スタンドを調査した. それらは種組成上, i)マサキ-トベラ群集, ii)オニヤブソテツ-ハマピワ群集, iii)ムクノキ群落, iv)ムサシアプミータブ群集, v)ミミズパイスダジイ群集, vi)イヌシデ-スタジイ群落. vii)イスノキ-ウラジロガシ群集, viii)ミヤマシキミ-アカガシ群集, ix)シイ萌芽林, x)クロマツ植林, xi)コナラ群落, xii)スギ・ピノキ植林, xiii)モウソウチク植林に区分された. 北九州市付近のムサシアプミ-タブ群集, ミミズパイ-スダジイ群集は, 西九州地方の同群集に比ぺ標徴種が少なく, 群集の単純化現象かみられた. 1:50.000現存植生図を描いだ. 調査地の約56%は宅地・工場であり, 森林植生は約24%(自然林は1%未満)で, 都市化が著し

北九州市北西部および近隣地の植生

The phytosociological study on vegetation was done in northwestern Kitakyushu City and its vicinities. Kitakyushu City is located in the northern region of Fukuoka Prefecture. The following I 3 associations or communities were identified and described, Natural forests were as follows; (1) Euonymo-Pittosporetum tobirae, (2) Cyrtomio-Litseetum japonicae, (3) Aphananthe , aspera Community, (4) Arisaemeto ringentis-Machiletum (Perseetum) thunbergii, (5) Symploco glaucae-Castanopsietum sieboldii, (6) Carpinus tschonoskii-Castanopsis cuspidata var. sieboldii Community, (7)Distylio-Cyclobalanopsietum, (8) Skimmio-Quercetum acutae Substitutional forests and afforestations were (9) Castanopsis coppice forest, (10) Pinus thunbergii afforestation, (13) Phyllostachys heterocycla var. pubescens afforestation. The number of character species in some associations we studied was fewer than the same ones found in Nagasaki Prefecture, western Kyushu. The standing vegetation map was drawn on the scale of l:50,000. Small natural forests were remained on particular sites. Secondary forests and afforestations of Cryptomeria japonica and Chamaecyparis obtusa were distributed widely on hills and mountains. The ranges of forests have been contracted by the expansion of urban districts and orchards. Urban and industrial areas were the most predominant landscapes in the study area. (Received 28 February 1985)北九州市北西部およぴ近隣地の森林植生82スタンドを調査した. それらは種組成上, i)マサキ-トベラ群集, ii)オニヤブソテツ-ハマピワ群集, iii)ムクノキ群落, iv)ムサシアプミータブ群集, v)ミミズパイスダジイ群集, vi)イヌシデ-スタジイ群落. vii)イスノキ-ウラジロガシ群集, viii)ミヤマシキミ-アカガシ群集, ix)シイ萌芽林, x)クロマツ植林, xi)コナラ群落, xii)スギ・ピノキ植林, xiii)モウソウチク植林に区分された. 北九州市付近のムサシアプミ-タブ群集, ミミズパイ-スダジイ群集は, 西九州地方の同群集に比ぺ標徴種が少なく, 群集の単純化現象かみられた. 1:50.000現存植生図を描いだ. 調査地の約56%は宅地・工場であり, 森林植生は約24%(自然林は1%未満)で, 都市化が著し

産業医科大学の構内および周辺地域の植生概観, および構内の環境保全について

The Kitakyushu City area, in which the University of Occupational and Envionmental Health, Japan (UOEH) campus lies, is situated in the region of the evergreen broad-leaf, or laurel-leaf, forests. Our studies on relict forest stands revealed that the original forest communities in the area were Cyrtomio-Litseetum japonicae and Euonymo-Pittos-poretum tobirae in the coastl area, Arisemato ringentis-Machiletum thunbergii in the bottomland, Symploco-Castanopsietum sieboldii and Ardisio-Castanopsietum sieboldii in. foothill area, and Distylio-Cyclobalanopsietum stenophyllae, Actinodaphnetum lancifoliae and Skimmio-Cyclobalanopsietum acutae on the mountain slopes. The secondary forests in the area are Castanopsis-Cyclobalanopsis coppice of sprout origin, red-pine forest and deciduous forests of various dominants. The original forest on the UOEH campus is assumed to be Symploco-Castanopsietum sieboldii, an evergreen broad-leaf forest, some 25m high and I m dbh in canopy trees. The secondary forest on the campus is doin inated by Quercus serrata, accompanied by Rhus succedanea, Platycarya strobilacea and Castanopsis cuspidata var. sieholdii. A small wetland near the north gate is dominated by Typha angustata. Slopes on the campus, which were created by cutting-off or fillingup of the ground, are invaded by Miscanthus sinensis, Solidago altissima (alien) and many other herbaceous plants. One hundred and thirty-six species of flowering plants and eight specles of ferns were recorded from the campus. Conservation problems are discussed from the standpoint of vegetation science.1)医生ケ丘をふくむ北九州市西部は, 全域が照葉樹林域にある. 残存林分の調査によって, 沿岸地帯-内陸の原植生が推定され, 医生ケ丘一帯はスダシイ-ミミズバイ群集域であることが明らかとなった. 2)現存植生の二次林は, シイーカシ萌芽林とカラスザンショウ群落が優勢である. 医生ケ作の二次林では, コナラが優占し, ハゼノキ・ノグルミが常に出現する. 向陽地では林床にウラジロまたはコシダが優占している. 3)湿地にはガマ・ヒメガマ・イグサが優占する. 4)医生ケ丘で種子植物131種, シダ植物8種を記録した. 5)大学構内の緑化について, 植生学の立場から付言し, 特に残存林および西北部の湿原群落の保存の重要性を指摘した

北九州市北西部および近隣地における森林植生の傾度

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