光合成産物のヒトによる占有
S Rojstaczer1, S M Sterling, N J Moore
1Center for Hydrologic Science and Division of Earth and Ocean Sciences, Duke University, Durham, NC 27708, USA.
Science (New York, N.Y.)
|December 26, 2001
まとめ
人類は,地球の植物ベースのエネルギーの10~55%を吸収し,地球全体の光合成に大きく影響を与えています. 資源使用レベルを理解するために,農場や森林からのより正確なデータが必要です.
科学分野:
- エコロジー エコロジー エコロジー
- グローバル・バイオジオケミカル・サイクル
- 環境科学 環境科学
背景:
- 以前の陸上の光合成に対する人間の影響評価は,限られたプロットスケールのデータに依存していました.
- 世界規模と大陸規模のデータは,純初回生産 (HANPP) の人による占有に関するより包括的な見解を提供します.
研究 の 目的:
- 最近の大規模なデータを用いて,陸上の光合成製品に対する世界的な人間の影響を推定する.
- モンテカルロ技術を用いてこれらの推定に関連する不確実性を定量化します.
主な方法:
- 影響の推定のために,最近のグローバルおよび大陸規模のデータセットを使用した.
- パラメータの不確実性を組み込むためにモンテカルロシミュレーションを使用しました.
主要な成果:
- ヒトは,陸上の光合成産物の10%から55%を吸収すると推定されています.
- 重要なパラメータに重大な不確実性が認められ,危機レベル評価を妨げている.
結論:
- 現在の見積もりは幅広い範囲を示しており,地球の原産物の実質的な人間の占有を示しています.
- 農業用地や熱帯雨林からの高解像度グローバルデータは,見積もりを洗練し,資源の持続可能性を評価するために不可欠です.
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