Characteristics, lability and distribution of phosphorus in suspended sediment from a subtropical catchment under diverse anthropic pressure in Southern Brazil

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• 作者：Mohsin Zafar^a ; ^b ; ^{mohsinses@gmail.com} ; Tales Tiecher^c ; Viviane Capoane^a ; Alexandre Troian^a ; Danilo Rheinheimer dos Santos^a
• 关键词：Phosphorus ; Suspended sediment ; No-tillage ; Diffuse pollution ; River P legacy
• 刊名：Ecological Engineering
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：100
• 期：Complete
• 页码：28-45
• 全文大小：2185 K
• 卷排序：100

文摘

The first study focusing the temporal aspect of river P legacy under subtropical environment from Southern Brazil. Hedley P fractionation is a useful tool to investigate the sediment P lability. No-tillage increases the sediment labile organic P pools whereas conventional tillage showed higher moderately and non-labile P pool. Seasonal variation reveals high sediment P during winter months, especially under CT tobacco cultivation. Bioavailable P is mainly associated to Fedcb, Alox and Aldcb contents.