Ecological risk assessments and context-dependence analysis of heavy metal contamination in the sediments of mangrove swamp in Leizhou Peninsula, China.

作者: Jing Liu , Keming Ma , Laiye Qu

DOI: 10.1016/J.MARPOLBUL.2015.08.046

关键词: Paddy fieldEnvironmental scienceEcologyWetlandAegiceras corniculatumEnvironmental chemistryGeologic SedimentsContext (language use)MangrovePollutantSediment

摘要: Sediments in eight types of mangroves were sampled the Leizhou Peninsula. Heavy metals analyzed to investigate effects on metal distribution mangrove communities, evaluate contamination levels, identify sources and relationships between two. Results showed that communities have most heavy distributions sediments, especially sediment with shrub Aegiceras corniculatum where contents many are highest. As, Cr Ni identified as pollutants primary concern, while Cd was no concern. Zn, Pb, As mainly originated from anthropogenic source other geogenic. affected by independent joint landscape context; context explains more variations than does physicochemical variables. Total sulfur, total phosphorus potassium sediment, existence paddy field forest land within 2000m around sampling sites significant variables also.

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