まとめ
陸上の植生は大気中の二酸化炭素と酸素レベルに大きな影響を与えます. 陸上の生態系の変化は,海洋の浸透などで,世界の一次生産性を変化させ,大気中のガス濃度に影響を与えます.
科学分野:
- パレオントロジー・パレオントロジー
- エコロジー エコロジー エコロジー
- 気候科学 気候科学
背景:
- 陸上の植生は,メソゾーイク時代以来,大気中の二酸化炭素と酸素の動態の主要な原動力となっている.
- 特定のタイプを除く現代の陸生生態系は,海洋生態系よりも面積単位あたりの生産性が高くなります.
- この地上の生産性の優位性は,ファネロゾーイク期の末期の大部分にわたって続いた可能性が高い.
研究 の 目的:
- 地上生態系の変化が大気中のガス構成に与える影響を分析する.
- 地質的な時間における陸上と海洋の生態系の比較生産性を評価する.
主な方法:
- 生態系の生産性比 (生産性/面積) の比較分析.
- 世界一次生産性に対する海洋侵害と回帰の影響をモデル化.
主要な成果:
- 陸上の生態系は,一般的に,海洋生態系よりも高い生産性/面積比を示しています.
- 陸上の生態系の減少 (例えば,海洋の侵食など) は,世界の一次生産性の低下につながります.
- 主要生産性の低下は,大気中の二酸化炭素の増加と酸素濃度の低下につながります.
結論:
- 陸上の生態系の範囲の変化は,大気中の二酸化炭素と酸素の重要な調節因子である.
- 海洋の逆行と逆行は,陸上の植生に与える影響により,大気組成に大きく,対極的な影響を及ぼします.
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