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blackwater rivers (en)  

定义

  • Information A blackwater river is a type of river with a slow-moving channel flowing through forested swamps or wetlands. As vegetation decays, tannins leach into the water, making a transparent, acidic water that is darkly stained, resembling black tea. (en)

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http://aims.fao.org/aos/agrovoc/c_4f5b9967

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