摘要
通过2009年10月—2010年7月对深圳大亚湾大鹏澳网箱养殖区、网箱外0.5km(对照区1)和网箱外2km(对照区2)等3个区域的现场调查,阐明了海水中温度、盐度、pH、溶解氧(dissolved oxygen,DO),化学需氧量(chemical oxygen demand,CODMn)、叶绿素a(Chl a)和营养盐等水质因子的时空分布特征及相关性,并评价了海区的营养状态。结果表明,与两个对照区域相比较,大鹏澳网箱养殖对海水中的CODMn、Chl a和SiO3-Si的影响不明显,对DO、pH、PO4-P、NO2-N、NH4-N、总氮(total nitrogen,TN)和总磷(total phosphorus,TP)的影响相对较大,其中对NH4-N的影响已经扩散到了网箱外0.5km区域。网箱养殖区在冬季和春季是中营养水平,而夏季则是富营养水平。总体来说,大鹏澳网箱养殖区水质有恶化的趋势,必须采取一定的有效措施对网箱区环境进行合理调控。
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.
出处
《热带海洋学报》
CAS
CSCD
北大核心
2012年第2期110-117,共8页
Journal of Tropical Oceanography
基金
中国科学院知识创新工程重要方向项目群项目(KZCX2-YW-Q07-03)
国家科技支撑计划项目(2011BAD13B02)
关键词
网箱养殖
大鹏澳
水环境
营养状态
营养盐
cage culture
Dapeng Cove
water environment
nutritional status
nutrient
