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パン北極の泥炭地帯は,最近の温暖化で拡大しています.

J Handley1, R E Fewster1,2,3, T G Sim4

  • 1Department of Geography, University of Exeter, Exeter, UK.

Global change biology
|February 13, 2026
PubMed
まとめ

北極の泥炭地帯は,気候の温暖化により,1950年以来,しばしば年間1メートル以上,急速に拡大しています. この泥炭地帯の拡大は進行中であり,おそらく汎北極現象であり,炭素循環に影響を及ぼしている.

キーワード:
北極の泥炭地帯は北極の泥炭地帯である.炭水化物炭水化物は,炭水化物である.環境変化 環境の変化横方向の膨張である.泥炭地帯の広さは,泥炭地帯の広さです.

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科学分野:

  • 地球科学 地球科学 地球科学
  • 気候科学 気候科学
  • エコロジー エコロジー エコロジー

背景:

  • 北極の泥炭地帯における炭素の運命は,気候変動が永久凍土と炭素循環に与える影響のために不確実です.
  • 北極の泥炭地帯の範囲の変化は十分に理解されていないため,陸上の炭素貯蔵の正確な予測を制限しています.
  • パン北極圏の泥炭地帯の広がりの変化は,陸上の北極の炭素の運命を大きく変える可能性があります.

研究 の 目的:

  • 最近の温暖化への反応として北極の泥炭地帯の横向的な拡大を調査する.
  • この泥炭地帯の膨張の速度を定量化してください.
  • 泥炭地帯の拡大における地域的変動を判定する.

主な方法:

  • 欧州とカナダの北極の横断地帯の12の泥炭地帯からデータを収集した.
  • 14Cと210Pbの年代測定によって制限された年齢深さのモデルを使用して91の泥炭コアを分析しました.
  • トート・エッジからトート・センターまで,緯度グラデーションを横切って調査したトート・コア.

主要な成果:

  • 泥炭地帯は拡大しており,ある場所では1950年以降,年間1メートルを超える膨張率を示している.
  • 1990 AD以降の新たな泥炭形成は,調査された場所の3分の2 (8/12) で観察されました.
  • トートランドの拡大は進行中であり,汎北極現象である可能性が高いが,地形などの地域要因が制約を課す可能性がある.

結論:

  • 北極の泥炭地帯は,最近の温暖化によって活発に拡大しています.
  • この拡大は,北極の炭素循環に重大な影響を及ぼします.
  • 汎北極の泥炭地帯の拡大と,その気候変動への影響を完全に推定するために,さらなる研究が必要である.