TY - JOUR
T1 - Effects of mangrove plant species on accumulation of heavy metals in sediment in a heavily polluted mangrove swamp in Pearl River Estuary, China
AU - Chai, Minwei
AU - Li, Ruili
AU - Tam, Nora Fung Yee
AU - Zan, Qijie
N1 - Publisher Copyright:
© 2018, Springer Science+Business Media B.V., part of Springer Nature.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - The present study compared accumulation of heavy metals in a mangrove swamp dominated by Kandelia obovata with that by Sonneratia apetala in Pearl River Estuary, China. The results showed that the concentrations of heavy metals at all sediment depths in the S. apetala site were significantly higher than that in K. obovata. The geo-accumulation index and potential ecological risk index also showed that S. apetala sediment had a higher contamination of heavy metals, especially Cd. S. apetala significantly altered the biogeochemical cycles of Cd, lead (Pb), nickel (Ni) and chromium (Cr). In S. apetala sediment, TOC played an important role in sequestering heavy metals as reflected by its positive correlations with Zn and Pb. This study demonstrated the importance of plant species in altering soil quality and heavy metal accumulation, and S. apetala is more efficiently working as a pollution barrier than K. obovata.
AB - The present study compared accumulation of heavy metals in a mangrove swamp dominated by Kandelia obovata with that by Sonneratia apetala in Pearl River Estuary, China. The results showed that the concentrations of heavy metals at all sediment depths in the S. apetala site were significantly higher than that in K. obovata. The geo-accumulation index and potential ecological risk index also showed that S. apetala sediment had a higher contamination of heavy metals, especially Cd. S. apetala significantly altered the biogeochemical cycles of Cd, lead (Pb), nickel (Ni) and chromium (Cr). In S. apetala sediment, TOC played an important role in sequestering heavy metals as reflected by its positive correlations with Zn and Pb. This study demonstrated the importance of plant species in altering soil quality and heavy metal accumulation, and S. apetala is more efficiently working as a pollution barrier than K. obovata.
KW - Heavy metal
KW - Kandelia obovata
KW - Pearl River Estuary
KW - Sediment
KW - Sonneratia apetala
UR - http://www.scopus.com/inward/record.url?scp=85048048141&partnerID=8YFLogxK
U2 - 10.1007/s10653-018-0107-y
DO - 10.1007/s10653-018-0107-y
M3 - Article
C2 - 29876676
AN - SCOPUS:85048048141
SN - 0269-4042
VL - 41
SP - 175
EP - 189
JO - Environmental Geochemistry and Health
JF - Environmental Geochemistry and Health
IS - 1
ER -