کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6362582 1315688 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of mangrove reforestation on heavy metal accumulation and speciation in intertidal sediments
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
پیش نمایش صفحه اول مقاله
Influence of mangrove reforestation on heavy metal accumulation and speciation in intertidal sediments
چکیده انگلیسی
To investigate the influence of mangrove reforestation on heavy metal accumulation and speciation in intertidal sediments, core sediments from a restored mangrove forest and adjacent mud flat in Yifeng Estuary (southeastern China) were analyzed. The chemical speciation of heavy metals (Pb, Zn, Cu, Cr and Ni) was determined according to a sequential extraction procedure. Special attention was paid to the upper 20 cm of sediment, in which metal accumulation was enhanced and speciation was obviously modified. Mangrove reforestation decreased the concentrations of all metals in the acid-soluble fraction and increased metal concentrations in the oxidizable fraction. Increased Pb, Zn and Cu concentrations and decreased Ni and Cr concentrations were observed in the reducible fraction. These results suggest that mangrove reforestation facilitated the accumulation of heavy metals in the upper sediment layers but decreased their bioavailability and mobility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 60, Issue 8, August 2010, Pages 1319-1324
نویسندگان
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