コメント "温暖化に反応する土壌全体の炭素流量"
Jing Xiao1, Fangjian Yu1, Wanying Zhu1
1College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
まとめ
土壌の温暖化により二酸化炭素 (CO2) が土壌から放出されるが,最近の研究によると
科学分野:
- 環境科学
- 土壌科学
- 気候科学
背景:
- 土壌の呼吸は 炭素循環の主要な構成要素です
- 土壌呼吸の温度感受性を理解することは 気候変動のモデリングに不可欠です
- 過去の研究では,土壌のプロファイルから CO2 の大量発生が示唆されています.
研究 の 目的:
- Hicks Pries et al の実験的アプローチと分析を批判的に評価する. (2017年) のことです.
- 気候変動に対する土壌の炭素フィードバックに関する結論を再評価する.
主な方法:
- 引用された研究で使用された実験設計と統計的方法の分析.
- 土壌の深度における温度感度 (Q10) の再評価
主要な成果:
- 実験的アプローチとデータ分析における重大な欠陥を特定した.
- 土壌のCO2生成の温度感度は,主張したようにすべての深さで均一ではないことが判明しました.
結論:
- ヒックス・プライスらによって得られた結論 低評価された気候のフィードバックは弱体化しています.
- 土壌の炭素-気候フィードバックの強さに関する研究結果は再検討が必要です.
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