北海道上ノ国人工湿地における重金属処理 : 湿地性植物の重金属吸収特性

概要

論文の詳細を見る
Heavy metal contents in representative emergent vegetations, Phragmites australia and Typha latifolia, were investigated from March 2002 to December 2003 in a constructed wetland in Kaminokuni, Hokkaido, Japan. Typha latifolia was more effective to Mn2+ sorption than Phragmites australis. Manganese was accumulated in leaves in Typha latifolia, upto 14 mg/g-dry weight. Accumulation of Mn in leaves of Typha latifolia was likely the result of activated demand of Mn in photosynthesis during summer and autumn. In contrast, Fe, Zn and Cu distributions were markedly localized and mostly concentrated in root sections of both plants in all seasons. They increase in Fe, Zn and Cu contents in roots of vegetations may be a protection mechanism against excess uptake of unnecessary heavy metals in aerial parts of the plants.
社団法人資源・素材学会の論文
2009-08-25