最後の氷河期以来,北陸の炭素貯蔵量の大幅な損失と増加
PubMedで要約を見る
まとめ
この要約は機械生成です。北部の陸上の炭素貯蔵は,脱氷期中に大気中のCO2に大きく影響した. 土地の炭素は300PgC以上減少し,永久凍土のロースの減少と泥炭地帯の増加がホロセンのレベルに影響を与えました.
科学分野
- 古代気候学
- 地化学
- エコロジー
背景
- 脱氷期における大気中のCO2の動態は,主に海洋の炭素循環に起因する.
- 過去のCO2レベルを制御する上で,地上の生態系が重要な役割を果たしていたことを示唆している.
研究 の 目的
- 最後の氷河期から現在までの北陸の炭素貯蔵量の千年規模の変化を定量化する.
- 大気中のCO2濃度に対するこれらの地上の炭素動態の影響を評価する.
主な方法
- パレオデータと 気候バイオームモデルを組み合わせたものです
- 北部の地上の炭素の蓄積を千年単位で再構築した.
主要な成果
- 北部の土地の炭素貯蔵は 脱氷期中に300ペタグラム以上減少し 約1万1000年前に最小値に達しました
- 地球上の炭素貯蔵の動態は,大気中のCO2に大きな影響を与えました.
- 氷期後の変化は,永久凍土の影響によるロースの炭素損失と泥炭地帯の炭素蓄積によって特徴付けられました.
結論
- 北陸の炭素ダイナミクスは,最後の脱氷期における大気中のCO2の調節に重要な役割を果たした.
- 永久凍土の融解と泥炭地帯の形成は,氷河期後の地上の炭素貯蔵量の変化を促す重要なプロセスでした.
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