植生学会誌
Online ISSN : 2189-4809
Print ISSN : 1342-2448
ISSN-L : 1342-2448
15 巻 , 1 号
選択された号の論文の8件中1~8を表示しています
原著論文
  • 叢 敏, 菊池 多賀夫
    原稿種別: 本文
    1998 年 15 巻 1 号 p. 1-5
    発行日: 1998/06/25
    公開日: 2017/01/06
    ジャーナル フリー
    山火事跡地の先駆植物として,種子から発芽して来る代表的な種のうちヒヨドリジョウゴ,ヒメコウゾ,ヨウシュヤマゴボウ,ノブドウ,ヤマブドウ,サルトリイバラ,オオイヌタデ,ツユクサ,サンショウ,モミジイチゴ,クマイチゴ,ニガイチゴについて,一旦発芽培養を行って発芽するものは発芽させ,その後,未発芽で残った種子に対する加熱発芽反応を調べた.その結果,ヒヨドリジョウゴ,ヒメコウゾ,ヨウシュヤマゴボウ,ノブドウ,ヤマブドウ,サルトリイバラに加熱による発芽促進効果が見られた.このような発芽特性は乾燥保存種子の特性とは異なる独自のものであり,湿潤気候に適合する特性であることが示唆された.
  • 冨士田 裕子, 橘 ヒサ子
    原稿種別: 本文
    1998 年 15 巻 1 号 p. 7-17
    発行日: 1998/06/25
    公開日: 2017/01/06
    ジャーナル フリー
    Shizukari Mire is situated along the south-western Pacific coast of Hokkaido. Once it had a beautiful and excellent landscape due to various community types and high species diversity with many ponds and floating-islands. It was designated as a national natural monument in 1922. But this status was cancelled in 1951. Analysis of old topographical maps and documents revealed that, the reason for the cancellation was not the devastation of the mire but the pressure to develop agricultural lands. The size of the mire was 263 ha in 1917. In 1953, two years after the cancellation, it became 221 ha. Then the mire was converted rapidly into agricultural land and by 1996 it was reduced to only 34 ha. The remaining mire is the center part of the former bog and includes some pond vegetation. Two substitutional community types are recorded at the hollow, the Rhynchospora alba - Drosera rotundifolia community and the Rhynchospora fauriei - Rhynchospora alba community. Most of the remaining mire had been covered with lawn vegetation which has changed into substitutional vegetation, the Rhus trichocarpa - Moliniopsis japonica community by drainage and theft. The conservation and rehabilitation of the mire are needed immediately because the succession is continuing and the remaining mire is in very dangerous condition.
  • I. E. Jr. Buot, 沖津 進
    原稿種別: 本文
    1998 年 15 巻 1 号 p. 19-32
    発行日: 1998/06/25
    公開日: 2017/01/06
    ジャーナル フリー
    フィリピン・ルソン島のプログ山において植生垂直分布を記述した.植物地理学的特性をふまえて,それらを他の熱帯山地のものと比較しプログ山での特徴を検討した.以下の三つの植生帯が認められた. 1. Pinus林(2000-2400m. 2000-2300mはPinus純林, 2300-2400mはPinus-Deutzia-Schefflera林), 2. Lithocarpus-Dacrycarpus-Syzygium-Leptospermum林(2400-2600m), 3. Rhododendron^Clethra-Eurya林(2600-2700m).プログ山では,北方の温帯要素(Skimmia, Pinus, Ilexなど)が多く出現するため,フロラの特徴は,ルソン島南部や他のフィリピンの山地とは異なっていた.標高が増加するにつれて,種数,多様性,胸高直径,樹高などは減少する傾向にあった.垂直上部の植生帯における林冠優占種の多くは垂直下部の植生帯における林床構成要素であった.各植生帯の境界ははっきりしており,他の熱帯山地のように漸次的に変わるものではなかった.プログ山は,北方の温帯フロラの南限であり,また熱帯山地林において独自の森林型を呈する熱帯雲霧林の北限にあたる.
  • 浅見 佳世, 山戸 美智子, 服部 保
    原稿種別: 本文
    1998 年 15 巻 1 号 p. 33-45
    発行日: 1998/06/25
    公開日: 2017/01/06
    ジャーナル フリー
    Imperata cylindrica type grassland on embankment slopes, levee slopes and reclaimed land etc. was studied phytosociologically. The results show that this grassland was recognized as a new association (Erigeronto-Imperatetum cylindricae) characterized by the presence of Erigeron annuus, Rumex acetosa, Solidago altissima etc. and the absence of many character and differential species of Miscanthetea sinensis, Haloragis micrantha, Gentiana scabra var. buergeri, Potentilla freyniana etc. Its geographical distribution in Japan was from Tohoku to Kyushu district. Semi-natural grasslands in Japan are represented by two typical grasslands ; one is mowing grassland dominated by Miscanthus sinensis, the other is grazing grassland dominated by Zoysia japonica. This association is a new type of grassland (weeding grassland dominated by Imperata cylindrica) maintained by two or three weedings per year. The distinguishing factors which differentiate this association from Miscanthus-Zoysia type associations occur in the life-form spectrum, the phytosociological spectrum and naturalized plants ratio, as well as the floristic composition. The association was divided into two seasonal lower units, spring aspect and autumn aspect, and belongs to Miscanthetea sinensis, Caricetalia nervatae and Zoysion japonicae. Furthermore, Erigeronto-Imperaterum cylindricae on levee slopes in Sanda, Hyogo Pref. was divided into two lower units : one is Adenophora triphylla var. japonica lower unit characterized by the presence of Adenophora triphylla var. japonica, Cirsium japonicum, Sanguisorba officinalis etc. ; the other is typical lower unit characterized by the absence of these species. The former unit is distributed on levee slopes with no consolidation and the latter unit is on levee slopes with consolidation.
  • 瀬沼 賢一
    原稿種別: 本文
    1998 年 15 巻 1 号 p. 47-59
    発行日: 1998/06/25
    公開日: 2017/01/06
    ジャーナル フリー
    Marsh vegetation in the Mino-Mikawa region of Aichi pref., the western part of Shizuoka pref. and the southeastern part of Gifu pref. was examined by Braun-Blanquet's phytosociological method, and compared with similar associations reported from the western parts of Japan. Marsh vegetation in this region is characterized by genus Utricularia, Eriocaulon, and Rhynchospora, and the differentiation of communities is influenced mainly by topographical and stratigraphical features and formative processes of marshes. The vegetation was divided into six communities : 1. Eriocauletum nudicuspis ; 2. Rhynchosporetum chinensis ; 3. Eriocaulon mikawanum community ; 4. Eriocaulon buergerianum community ; 5. Sclerietum rugosae, ass. nov. ; 6. Metanarthecium luteo-viride - Moliniopsis japonica community. These communities are included in the alliance Eriocaulo-Rhynchosporion fujitani. The Sclerietum rugosae was described as a new association in this study. It is characterized by Scleria rugosa var. glabrescens, Scleria rugosa var. rugosa, Drosera spathulata, and Lycopodium cernuum, and is distributed in the Mino-Mikawa region and in low elevations from Kinki to Chugoku district.
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