Departmental Bulletin Paper 北海道厚真川流域の上部更新統~完新統のボーリングコアにおける植生変遷の解明 : 層相解析・AMS14C年代測定・珪藻分析の成果をもとに

星野, フサ  ,  中村, 俊夫  ,  岡, 孝雄  ,  近藤, 務  ,  関根, 達夫  ,  米道, 博  ,  山崎, 芳樹  ,  安井, 賢  ,  若松, 幹男  ,  前田, 寿嗣  ,  乾, 哲也  ,  奈良, 智法  ,  Hoshino, Fusa  ,  Nakamura, Toshio  ,  Oka, Takao  ,  Kondo, Tsutomu  ,  Sekine, Tatsuo  ,  Yonemichi, Hiroshi  ,  Yamazaki, Yoshiki  ,  Yasui, Satoshi  ,  Wakamatsu, Mikio  ,  Maeda, Toshitsugu  ,  Inui, Tetsuya  ,  Nara, Tomonori

27pp.67 - 72 , 2016-03 , 名古屋大学宇宙地球環境研究所年代測定研究部
The lower part of the AZK-103 core consisted of Picea forest , and the part above it consisted of 86% Sphagnum. Above this, the proportion of Quercus forest decreased gradually. At the lowermost part of the AZK-112 core, coniferous forest material consisting mostly of Picea was observed. In the part from after the time when Sphagnum was dominant, the amount of forest from Quercus, which accounted for 23% at the beginning of the Holocene, gradually decreased. After marine regression, Typha or Sparganium, which may have originated in nearby ponds, appeared in the Hamaatsuma (HAP-1) core. Ferns subsequently became predominant, and Quercus and Alnus forests then gradually expanded. In the Atsunantyugaku (AKP-1) core, ferns also became predominant after marine regression and were later replaced by Nuphar, which originated in nearby ponds. The subsequent rapid expansion of Quercus forest was followed by continuous expansion of Alnus forest . As in HAP-1 core, Alnus and Quercus forests coexisted with ferns during this period. 厚真川下流域のAZK-103コアの最下部はトウヒ属林でミズゴケ86%産出部を経て,25%のコナラ亜属林は漸減した.AZK-112コアでも最下部はトウヒ属林でミズゴケ属の多い時代を経て,完新世の23%コナラ亜属林は漸減していった.浜厚真(HAP-1)コアは池塘由来かもしれないガマ・ ミクリの時代を経てコナラ亜属林とハンノキ属林が拡大した.厚南中学(AKP-1)コアも池塘由来のコウホネの産出後コナラ亜属林が拡大その後ハンノキ林が急拡大し羊歯植物に覆われた.

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