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2 0 0 0年 5月～ 2 0 0 1年 5月对粤东大规模增养殖区柘林湾及湾外附近海域进行了大量营养盐、浮游生物和一般理化因子的周年调查。结果表明 ,调查海域溶解性无机氮、磷、硅含量都明显偏高 ,年平均值分别达到 2 2 .64、1 .95和5 9.7μmol/ L。其中 ,氮、磷含量均超过国家三类海水的水质标准。由于湾顶黄冈河和湾周边排污排废的影响 ,营养盐的分布基本表现为由湾内向湾外 ,近岸向离岸递减的格局。大规模增养殖业造成的 2次污染对该湾营养盐的时空分布具有重要的影响。柘林湾氮、磷、硅含量虽全面偏高 ,但如以 Justic和 Dortch等的标准来衡量 ,该湾浮游植物生长受控于单一营养盐限制因子的出现率为氮 41 .75 % ,磷 2 2 .9% ,硅 2 .3 6%。
From May 2000 to May 2001, annual surveys of a large number of nutrients, plankton and general physico-chemical factors were conducted in the macrophyte culture zone of East Guangdong and in the waters off Bay. The results showed that the contents of dissolved inorganic nitrogen, phosphorus and silicon in the surveyed sea area were significantly higher with annual average values of 22.6, 95 and 57.7 μmol / L, respectively. Among them, nitrogen and phosphorus content exceeded the national water quality standards for the three types of seawater. Due to the discharge of waste water around the Huanggang River and the Bay, the distribution of nutrients basically showed a pattern of decreasing offshore and offshore. The secondary pollution caused by large-scale aquaculture has an important impact on the spatial and temporal distribution of nutrients in the bay. Although the contents of nitrogen, phosphorus and silicon in Zhelin Bay are generally high, as measured by the criteria of Justic and Dortch, the limiting factor for the growth of phytoplankton controlled by the single nutrient in the bay is 41.75% of nitrogen and phosphorus 2 2 .9%, silicon 2. 36%.