日本各地における照葉樹林優占種の開芽時期 Budburst timings of the dominant trees of lucidophyll forests in Japan.

この論文にアクセスする

この論文をさがす

著者

抄録

  1.日本の東北地方から西表島までの17地域の照葉樹林において,シイ属とタブノキ属,コナラ属アカガシ亜属の樹種の開芽時期を調べた.まず,千葉でスダジイとタブノキの芽ぶきの過程を調べた.これを基に,各地で観祭日における芽ぶきの状態からその樹種の開芽時期を推定した. <BR>  2.シイ属の開芽時期は,西表島で12月下旬〜1月上旬,沖縄本島で2月中旬〜3月上旬,徳之島で3月下旬,屋久島で3月中旬,大隅半島で3月下旬〜4月下旬,奈良で4月下旬,房総半島で4月上旬〜下旬,宮城県名取で5月上旬〜中旬であった.タブノキ属,コナラ属アカガシ亜属の樹種の多くもシイ属とほぼ同時期に芽ぶいていた.これらの開芽時期は,諸文献の概略的な記録とも一致した. <BR>  3.シイ属の開芽は,北ほど遅くなり,南北で約5カ月の時差がみられた。しかし,緯度の増加に対する開芽時期の遅れは北ほど小さかった. <BR>  4.日本列島の照葉樹林の優占種群では,気候条件の地域的な違いに対し,種間での開芽の同調性はほぼ保たれたまま,開芽時期が北ほど遅れることが明かとなった.

Budburst timings of Castanopsis, Machilus and Quercus (subgen. Cyclobalanopsis) were studied at 17 different areas, from Natori in the Tohoku District to Iriomote Island in the Ryukyu Islands. Budburst is defined here as a stage in which the blades of the first new leaves just begin to unfold. Firstly, sprouting processes of Castanopsis and Machilus shoots were frequently observed in Chiba. Secondly, sprouting stages of new shoots were recorded for these three genera at a suitable season in each area. Based on the data regarding sprouting processes obtained in Chiba, and the sprouting stages observed at different dates and areas, budburst timing at each area was determined. Resultant budburst timings of Castanopsis in the areas from south to north were as follows : late Dec. to early Jan. in Iriomote : mid-Feb. to early Mar. in Okinawa ; late Mar. in Tokunoshima ; mid-Mar. in Yakushima ; late Mar. to late Apr. in Ohsumi Peninsula ; late Apr. in Nara ; early Apr. to late Apr. in Boso Peninsula and early to middle May in Natori. Many of the Machilus and Cyclobalanopsis species also seemed to open their buds around the same time as the budburst of Castanopsis, at all the places. Dominant species of lucidophyll forests thus sprouted earlier in the south and later in the north, although the delay due to the variation of latitude and annual mean temperature was smaller in the north. These observations were generally consistent with the rough descriptions on shoot sprouting which is reported locally in other literatures. Therefore budburst timing of dominant species of lucidophyll forests in Japan seems to be delayed towards the north, while keeping its synchronism among species.

収録刊行物

  • 植生学会誌

    植生学会誌 14(1), 1-14, 1997

    植生学会

参考文献:  36件中 1-36件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    110008145187
  • NII書誌ID(NCID)
    AA11347548
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13422448
  • データ提供元
    CJP書誌  CJP引用  NII-ELS  J-STAGE 
ページトップへ