酸中和能力の天然源は,プレカンブリア時代以前のシールドの低アルカリ度湖にある
まとめ
湖239号 湖239号 湖239号
科学分野:
- 環境化学 環境化学
- リムテクノロジーとは
- バイオジオケミストリー バイオジオケミストリー
背景:
- 酸性堆積は水生生態系に影響を及ぼします.
- 性生成を理解することは,生態系の健康にとって極めて重要です.
- 実験湖エリアの湖239は,ケーススタディを提供する.
研究 の 目的:
- 湖239とその周辺の流域の詳細なアルカリ度予算を作成する.
- 性生成の主要な源とプロセスを特定する.
- 水と陸のアルカリ性生成率を比較する.
主な方法:
- 湖とその陸上流域の詳細なアルカリ度予算の構築.
- 塩素性生産経路を決定するためのイオン予算分析.
- 実験的に酸性化された湖223のデータと比較.
主要な成果:
- 湖239は陸上流域の4.5倍以上のアルカリ性を生成した.
- 生物学的プロセス,特に硫酸塩還元は,湖内のアルカリ性の主要な源でした.
- 一つの陸上流域は性の大きな源であり,もう一つはほとんど産出せず,湿地の流域はシンクでした.
- 硫酸還元によるアルカリニティの生成は,硫酸の投入により増加した.
結論:
- 湖の性生成には,これまで考えられていたよりも,生物学的プロセスが重要な役割を果たしている.
- 塩素性に対する陸上の流域の貢献は,著しく異なる可能性があります.
- 湖のアルカリ性ダイナミクスは,酸性インプットに敏感であり,硫酸性還元が重要な反応プロセスである.
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