An unconstrained ordination- and GIS-based approach for identifying anthropogenic sources of heavy metal pollution in marine sediments
文献类型： 外文期刊
作者： Gu, Yang-Guang 1 ; Gao, Yan-Peng 2 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
2.Guangdong Univ Technol, Inst Environm Hlth & Pollut Control, Guangzhou 510006, Guangdong, Peoples R China
3.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
4.Key Lab Fishery Ecol & Environm Guangdong Prov, Guangzhou 510300, Guangdong, Peoples R China
5.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Guangdong, Peoples R China
关键词： Heavy metal; Sediments; Nonmetric multidimensional scaling; Geographic information system (GIS); Pollution
期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：5.553； 五年影响因子：5.907 ）
ISSN： 0025-326X
年卷期： 2019 年 146 卷
页码：
收录情况： SCI
摘要： A new method consisting of enrichment factor (EF) determination, nonmetric multidimensional scaling (NMS), and the geographic information system (GIS) technique was firstly developed to identify anthropogenic heavy metal sources in marine sediments of Hong Kong. Firstly, the EF was determined to differentiate between heavy metals originating from human and natural sources. Subsequently, NMS was applied to identify various source patterns of heavy metals, and the NMS score was calculated and spatially interpolated using GIS technology to evaluate the spatial influences of anthropogenic impacts in different areas. The concentrations of heavy metals in sediments of Hong Kong substantially exceeded their background values, demonstrating anthropogenic pollution. Two different types of human sources could be identified via NMS, one representing the industrial pollution discharges in the period from the 1960s to the 1980s before pollution control was introduced and one representing sewage discharge before the Tolo Harbour Action Plan in the mid-1980s.
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