中国 ユン南省 太陽川自然保護区の旧生林の樹層における炭素貯蔵量の変化と要因
Zi-Han Hu1,2,3, Li-Fan Wang1,3, Rui-Guang Shang1,3
1Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming 650224, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|September 1, 2025
まとめ
古い森林は 炭素を吸収する 重要な貯蔵庫として機能し バイオマスと炭素の貯蔵量は 時間の経過とともに増加します 森林の生態系におけるその重要性を強調しています.
科学分野:
- 森林の生態学
- 炭素封じ込め研究
- 古い森林の動態
背景:
- 旧生林における炭素の動態を理解することは 保護と炭素吸収源としての役割の評価に不可欠です
- 旧生林が純炭素源なのか 吸収源なのかについては論争がある.
- 森林における炭素の固定を量化することは,地域的な気候変動緩和戦略にとって不可欠です.
研究 の 目的:
- 古い森林の樹層のバイオマスと炭素貯蔵のダイナミクスを調査する.
- 異なる木の部分と直径のクラスでの炭素の分布を分析する.
- 二酸化炭素の貯蔵に 影響を与える要因を特定する.
主な方法:
- 2014年から2024年のダイナミックモニタリングデータ.
- 主要成分分析とランダムフォレストモデルが採用されました.
- バイオマス,炭素貯蔵,分布,影響要因の分析
主要な成果:
- 樹層の総バイオマスは359.72から449.44t·hm−2に増加し,炭素貯蔵は179.86から224.72t·hm−2に増加した.
- 大型木 (DBH ≥22.5cm) の炭素貯蔵量は増加し,総貯蔵量のより大きな割合を占めました.
- 幹は最も多くの炭素を保持し 枝と根が続いており 葉が最も少ないのです 種多様性は炭素貯蔵と正の相関関係を示した.
結論:
- 古い森林の樹層は 炭素の吸収源として機能し 炭素を効果的に吸収します
- この老朽化した森林の 炭素貯蔵の原動力は 大きな木です
- 大型木のバイオマスが鍵となる一方で,種多様性が炭素貯蔵に及ぼす影響は,モニタリング期間中に減少した.
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