摘要
本文分析研究近三十多年来发生在中国沿海的26次赤潮资料，得出以下主要结论。1．引起赤潮发生的赤潮生物有40种，约占世界已记录种类的1／3。在本文统计的资料当中，赤潮主要是由夜光藻(Noctiluca scientillans)和束毛藻属(Trichodesmium)引起的。2．夜光藻主要分布于河口、内湾水深10-20米浅水区，适温范围为12—27℃，适盐范围为18—30‰。3．赤潮通常发生在五、六月份。赤潮区内的赤潮生物密度很高(夜光藻密度高达20×10^4个／升)，波及范围上千平方公里，严重干扰渔场生态环境的平衡，造成渔业上的重大经济损失。本文还对今后如何加强对赤潮的研究提出建议。
This paper analyses the materials of red tide, recorded twenty-six times, along the coastal area of china and then makes the following conclusions 1. There are forty species of red tide organisms causing the occurrence of red tide along the coastal area of china, making up to one third of the recorded species in the world. Statistical data recorded twenty-three times show that red tide was mainly caused by Noctiluca scientillans and Trichodes mium, of which eleven times were caused by Noctiluca scicntillans and five times by Trichodesmium, making up to 47 per cent and 21 per cent respectively. 2. Noctluca scientillans is mainly distributed in the shallow-water area between 10—20m low in the estuariny and inner outlet environment. Us range of temperature tolerance is 12—27℃, salt tolerance is 18—30‰. 3. Red tide usually takes place during May and June. of twenty-three times recrorded ecghteen times took place in this period, making up to 78 per cent. The density of the organisms in the red tide area was high Ce.g Noctiluca scientillans could reach the density of 20×10~4cell/L) and affected the area of nearly one thousand square miles. This seriously destroied the balance of fisheries ecological environment, causing great loss in fisheries. This paper also puts forward the suggestions on the study of red tide.
