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Uptake and concentration of heavy metals in dominant mangrove species from Hainan Island, South China by Junguang Wang; Peng Wang; Zhizhong Zhao; Yanru Huo is a Environmental Science article available to read on EtoBox.

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By investigating three dominant mangrove species, namely Aegiceras corniculatum, Kandelia candel, Ceriops tagal and their rhizosediment in Mangrove wetlands in Hainan Island, this research analyzed absorption, concentration and distribution of heavy metals (Cr, Cu, Zn, As, Cd and Pb) in mangroves. The results found that the concentration of specific heavy metal differs in the different mangrove organs (leaf, stem and root). The content of heavy metals concentrated greatly in roots, but less in leaves and stems. The study also revealed that concentration capacity was weak in all three mangrove species (BCF0.02-0.91), with their organ ranking BCF > BCF > BCF. Among three mangrove species, the transfer factors of leaves and stems in Ceriops tagal were highest, indicating a great distribution capability for heavy metals, followed by Kandelia candel. Transfer factors in Aegiceras corniculatum were the weakest. This ranking was opposite to bioconcentration factors of roots. This study can further reflect bioavailability of heavy metals in sediments, which provides scientific evidence on ecosystem protection and management in mangrove wetlands.

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Author

Junguang Wang; Peng Wang; Zhizhong Zhao; Yanru Huo

Publisher

Springer Science and Business Media LLC

Published

2020

Language

EN

Field

Environmental Science (Physical Sciences)