大鹏澳海水鱼类网箱养殖区水环境的时空变化及营养状态分析  *

doi:10.11978/j.issn.1009-5470.2012.02.015

Abstract

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 ( COD_Mn ), 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 COD_Mn , 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

CLC Number:

P762.33

PENG Peng-fei,HU Chao-qun,YU Zong-he,LI Hai-peng. 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.

References

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

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