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Journal of Tropical Oceanography ›› 2014, Vol. 33 ›› Issue (3): 72-78.doi: 10.11978/j.issn.1009-5470.2014.03.011cstr: 32234.14.j.issn.1009-5470.2014.03.011

• Marine Environment Protection • Previous Articles     Next Articles

Distribution characteristics of phosphorus and its environmental significance in the surface sediments of Xiamen Gulf

JIANG Shuang-cheng1, LIN Pei-mei2, LIN Jian-wei1, CAI Jian-di1, XU Yi-bin1, ZHENG Le-yun1   

  1. 1. Fisheries Research Institute of Fujian Province, Xiamen 361013, China; 2. Xiamen Fifth Middle School, Xiamen 361000, China
  • Received:2013-07-31 Revised:2013-12-02 Online:2014-05-29 Published:2014-05-30

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Abstract: Surface sediments were collected from the Xiamen Gulf in March 2010. The sediments were analyzed with modified SEDEX (sequential extraction and separation analysis method) to obtain Ads-P (absorbed phosphorus), Fe-P (iron-bound phosphorus), Ca-P (phosphate bound onto CaCO3), De-P (detritus phosphorus), and OP (organic phosphorus). Along with environmental parameters of sediments, the geochemistry characters of phosphorus were discussed．The mean contents of Ads-P, Fe-P, De-P, Ca-P, OP, and TP (total phosphorus) were 9.80, 48.69, 14.07, 136.89, 91.97, and 401.41 μg?g-1, respectively. The results showed that TP was weakly influenced by terrestrial input, and De-P, OP and Fe-P were mainly influenced by terrestrial input. Ads-P and Ca-P were mainly from biogeochemical processes of the sea area. Ca-P, De-P and OP with heavy metals (Cu, Pb, Cd, and As) possessed chemical coupling, and might have similar geochemical behavior in the deposition process.