地下排水システムからのレガシーおよび新しいリンの損失を分析するためのハイブリッド統計機械学習アプローチ
Emeka Aniekwensi1, Ehsan Ghane1
1Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA.
Journal of environmental quality
|February 14, 2026
まとめ
レガシーフォスファー (P) は,地下排水による水質汚染に大きく貢献しています. 冬の有機肥料の適用は,新しいPの損失を増加させ,水質に対する農業の影響を減らすためにタイミングの重要性を強調します.
科学分野:
- 農業科学 農業科学とは
- 環境科学 環境科学
- 水質管理 水質管理
背景:
- リン (P) は作物生産に不可欠ですが,地下排水を通じて水体に浸出すると,環境リスクが発生します.
- の損失の源と経路を理解することは,水質の劣化を軽減するために極めて重要です.
研究 の 目的:
- 有機および無機農業用地からの排水排水に,レガシーおよび新しいリンが与える貢献度を定量化する.
- 肥料の適用タイミングが,の損失に与える影響を評価する.
主な方法:
- ハイブリッドの統計・機械学習モデルがP損失の定量化に用いられました.
- ミシガン州の2つの農場からのデータは,線形回帰と機械学習を使用して分析されました.
- モデルのパフォーマンスを評価するために,校正と検証セットが使用されました.
主要な成果:
- 有機肥料は,無機肥料と比較して,総リン (TP) と溶解反応性リン (DRP) の損失が著しく高かった.
- レガシーフォスファーは,両方のサイトでTPとDRPの損失の主な原因であり,総損失の79%から100%を占めていた.
- 冬の有機肥料の適用は,新しいリンの損失を増加させ,秋の早期の適用は減少させました.
結論:
- レガシーフォスファーは,地表下水道排水におけるフォスファースの損失の主な原因である.
- オーガニック肥料の適用のタイミングは,冬の適用がより有害であるため,新しいリン酸化物の損失に重大な影響を及ぼします.
- 管理戦略は,レガシーPの削減と,水の質を守るための適用タイミングの最適化に重点を置くべきである.
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