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Watershed Planning within a Quantitative Scenario Analysis Framework
Published on: July 24, 2016
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移行期にあるアマゾン盆地
Eric A Davidson1, Alessandro C de Araújo, Paulo Artaxo
1The Woods Hole Research Center, 149 Woods Hole Road, Falmouth, Massachusetts 02540-1644, USA. edavidson@whrc.org
Nature
|January 20, 2012
まとめ
アマゾンの森林は干ばつに対する回復力を示しているが,森林伐採や火災によるリスクに直面し,地域の気候と水循環を潜在的に変化させる可能性がある. これらの干渉は,干渉によって引き起こされる新しい生態系状態への移行の兆しかもしれません.
科学分野:
- エコロジー エコロジー エコロジー
- 気候科学 気候科学
- 水文学 水文学とは
背景:
- アマゾンの森林は,農業の拡大と気候の変動による干渉の増加を経験しています.
- 森林は適度な干ばつに対する回復力を発揮していますが,森林伐採,火災,干ばつなどの影響が併せ発生すると,リスクが生じます.
- これらの干渉は,炭素貯蔵の損失と降水と河川の排出パターンの変化につながる可能性があります.
研究 の 目的:
- アマゾンの森林の干渉に対する回復力を評価する.
- 森林伐採,火災,干ばつを組み合わせた潜在的な影響を調査する.
- アマゾン盆地における生態系移行の初期の兆候を特定する.
主な方法:
- アマゾンの森林の動態に関する最近の研究のレビュー.
- 気候変動の変動性と土地利用の相互作用の分析.
- 水学および生地化学のサイクルを監視する.
主要な成果:
- アマゾンの森林は,毎年発生する中程度の干ばつに相当な回復力を発揮しています.
- 森林破壊,火災,干ばつとの相互作用は,かなりの炭素の損失につながる可能性があります.
- エネルギーと水の循環の変化は,南と東のアマゾンで顕著です.
結論:
- アマゾン流域は,干渉が支配する体制に移行している可能性があります.
- 土地利用と干ばつの影響は,盆地全体での自然変動をまだ超えていないが,懸念される傾向を示している.
- 生態系変化の初期の兆候は,継続的なモニタリングと研究を必要とします.
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