中国地理科学(英文版) ›› 2009, Vol. 19 ›› Issue (1): 62-68.doi: 10.1007/s11769-009-0062-8

• 论文 • 上一篇    下一篇

Spatial Variations in Depth-distribution of Trace Metals in Coastal Wetland Sediments from Quanzhou Bay, Fujian Province, China

WANG Aijun1,2, CHEN Jian1   

  1. 1. Open Laboratory of Ocean & Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;
    2. Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China
  • 收稿日期:2008-04-02 修回日期:2008-09-10 出版日期:2009-03-20 发布日期:2010-01-20
  • 通讯作者: WANG Aijun.E-mail:ajwang@163.com E-mail:ajwang@163.com
  • 基金资助:

    Under the auspices of Science Foundation of Fujian Province (No. D0510025);National Natural Science Foundation of China (No. 40606012)

Spatial Variations in Depth-distribution of Trace Metals in Coastal Wetland Sediments from Quanzhou Bay, Fujian Province, China

WANG Aijun1,2, CHEN Jian1   

  1. 1. Open Laboratory of Ocean & Coast Environmental Geology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;
    2. Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China
  • Received:2008-04-02 Revised:2008-09-10 Online:2009-03-20 Published:2010-01-20
  • Supported by:

    Under the auspices of Science Foundation of Fujian Province (No. D0510025);National Natural Science Foundation of China (No. 40606012)

摘要:

Four short cores were obtained from the coastal wetland of the Quanzhou Bay,Fujian Province,China,and sediment samples were analyzed with a Mastersizer 2000 for grain size analysis and an Inductively Coupled Plasma Atomic Emission Spectrometer(ICP-AES) for trace metal analysis. The results of grain size analysis show that the wetland sediments are mainly composed of silt and clay,and the distribution of median grain size is affected by human activities obviously. The results of trace metal analysis show that the wetland sediments mainly originate from terrestrial materials in the Luoyangjiang River estuary and from contaminants discharged from adjacent rivers in Shuitou area. The heavy metal contamination in Luoyangjiang estuary decreased from 1984 to 2004 due to industry transformation,but has increased since 2004 because of the discharge of contaminants to the Jinjiang River and much living sewerage to the bay,and a large number of trace metals are trapped within Spartina alterniflora marsh.

关键词: coastal wetland, trace metal, grain size, Spartina alterniflora marsh, Quanzhou Bay

Abstract:

Four short cores were obtained from the coastal wetland of the Quanzhou Bay,Fujian Province,China,and sediment samples were analyzed with a Mastersizer 2000 for grain size analysis and an Inductively Coupled Plasma Atomic Emission Spectrometer(ICP-AES) for trace metal analysis. The results of grain size analysis show that the wetland sediments are mainly composed of silt and clay,and the distribution of median grain size is affected by human activities obviously. The results of trace metal analysis show that the wetland sediments mainly originate from terrestrial materials in the Luoyangjiang River estuary and from contaminants discharged from adjacent rivers in Shuitou area. The heavy metal contamination in Luoyangjiang estuary decreased from 1984 to 2004 due to industry transformation,but has increased since 2004 because of the discharge of contaminants to the Jinjiang River and much living sewerage to the bay,and a large number of trace metals are trapped within Spartina alterniflora marsh.

Key words: coastal wetland, trace metal, grain size, Spartina alterniflora marsh, Quanzhou Bay