Control and managements of nitrogen contamination in river basin scale

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Other Title
  • 流域スケールから見る窒素汚染対策
  • 流域スケールから見る窒素汚染対策 : 窒素の統合的管理に向けて
  • リュウイキ スケール カラ ミル チッソ オセン タイサク : チッソ ノ トウゴウテキ カンリ ニ ムケテ
  • —Toward integrated management of nitrogen—
  • —窒素の統合的管理に向けて—

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Abstract

Due to environmental loads of active nitrogen, issues such as nitrogen saturation in headwater basin, eutrophication in lakes, inner bays and inland seas, and groundwater contamination by nitrogen have become critical problems in Japan. Controls by environmental standards and effluent standards have made fair achievements in environmental protection but still unsolved problems are left. Toward integrated water quality management, relations among various standards, medium, and nitrogen sources are discussed briefly.

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