有害赤潮肆虐于我国和世界各国沿海 ,是国际社会共同关注的重大海洋环境问题和生态灾害 .自 2 0世纪 70年代起 ,我国有记录的赤潮有 4 0 0多次 ,发生次数以每 1 0年增加 3倍的速度上升 ;赤潮发生规模也呈急剧扩大的趋势 ,1 998年至今 ,每年都发生了面积超过 1 0 0 0km2的特大赤 Harmful red tide wreak havoc on the coast of our country and other countries in the world is a major marine environmental issue and ecological disaster that the international community pays close attention to. Since the 1970s, there are more than 400 recorded red tides in our country, Year increase of 3 times the rate of increase; the scale of occurrence of red tide also showed a sharp expansion of the trend, since 1998, every year have occurred over an area of ​​more than 1000km2