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Global Climate Change01:50

Global Climate Change

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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
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Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
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土地の利用可能性と政策のコミットメントは,森林化による地球温暖化対策を制限しています.

Yijie Wang1, Yakun Zhu1, Susan C Cook-Patton2,3

  • 1School of Atmospheric Sciences, Key Laboratory of Tropical Atmosphere-Ocean System (Ministry of Education), Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.

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PubMed
まとめ
この要約は機械生成です。

植林は炭素を吸収することで 気候変動を緩和できます しかし,植林による世界の炭素収縮の推定は,土壌の炭素の変動性と土地の利用可能性の制約のために不確実です.

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科学分野:

  • 環境科学
  • 気候変動の緩和
  • 森林の生態学

背景:

  • 植林と再植林を含む森林化は,バイオマスと土壌に炭素を吸収することによって気候変動を緩和する可能性を秘めています.
  • 地球規模での森林伐採の減少の予測の不確実性は,土壌の炭素吸収率と土地の利用可能性の評価の変動から生じています.

研究 の 目的:

  • 森林化に関連した土壌の炭素変化のグローバルマップを開発する.
  • 土地の利用可能性の異なるシナリオの下での炭素収縮の可能性のより正確な見積もりを提供するためです.

主な方法:

  • 植林による土壌の炭素増加と減少を詳細に示す世界地図の作成
  • アルベドによる温暖化などの悪影響を回避し,水資源と生物多様性を保護するために,土地の利用可能性に関する制約を考慮して,炭素吸収の可能性を分析する.

主要な成果:

  • 森林化は,地球規模で3億8,900万ヘクタール (制限を考慮すると) で,2050年までに39.9ペタグラムの炭素を吸収し,これは以前の予測よりも低い数値です.
  • 土地の利用可能性が現在の政策のコミットメント (1億2千万ヘクタール) に限られれば,炭素の吸収量は12.5ペタグラムに減少します.
  • 土壌の炭素の変化は主に上層層で観察された.

結論:

  • 森林を植えることで 炭素の吸収を高めるには 森林を植える面積を拡大する必要があります
  • 気候変動を緩和する取り組みを強化するために,未開拓の森林資源を持つ国々にとって,国家的なコミットメントを強化することが極めて重要です.