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Journal of Tropical Oceanography >

2012 , Vol. 31 >Issue 2: 110 - 117

DOI: https://doi.org/10.11978/j.issn.1009-5470.2012.02.015

Marine Environment Protection

Analysis of spatial-temporal variation and nutritional status of water environment in the Dapeng Cove

  • Bang-Feng-Fei ,
  • Hu-Chao-Qun ,
  • Xu-Zong-He ,
  • Li-Hai-Feng
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  • 1 ． Key Laboratory of Marine Bio-resource Sustainable Utilization , Key Laboratory of Marine Biological Application of Guangdong Province , South China Sea Institute of Oceanology , Chinese Academy of Sciences , Guangzhou 510301 , China 2 ． Graduate University of Chinese Academy of Sciences , Beijing 100049 , China

Received date: 2010-12-18

  Revised date: 2011-03-07

  Online published: 2012-06-05

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Abstract

Water environment was investigated in three areas, cage culture area, 0.5km (control area 1) and 2km (control area 2) outside the cage in the Dapeng Cove of Daya Bay from October 2009 to July 2010 on a seasonal basis. The spatial-temporal variation and the relevance of temperature, salinity, pH, dissolved oxygen (DO), chemical oxygen demand ( CODMn ), chlorophyll a ( Chl a) and nutrients of seawater in these areas were analyzed and their nutritional status were also evaluated. The results showed that DO, pH, PO4-P, NO2-N, NH4-N , TN (total nitrogen) and TP (total phosphorus) in the seawater of the Dapeng Cove were affected by the fish farm, while CODMn , Chl a and SiO3-Si were less affected. The water inside the cage area was in the middle nutritional level both in winter and spring, while it showed eutrophication in summer. In general, water quality in the cage culture area of the Dapeng Cove was deteriorating, and some effective control measures should be taken to regulate the water environment.

Key words： cage culture; Dapeng Cove; water environment; nutritional status; nutrient

Cite this article

Bang-Feng-Fei , Hu-Chao-Qun , Xu-Zong-He , Li-Hai-Feng . Analysis of spatial-temporal variation and nutritional status of water environment in the Dapeng Cove[J]. Journal of Tropical Oceanography, 2012 , 31(2) : 110 -117 . DOI: 10.11978/j.issn.1009-5470.2012.02.015

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