论文部分内容阅读
对1980-2007年广东沿海赤潮灾害历史资料进行统计分析,研究赤潮灾害的时空分布规律和赤潮肇事种的变化规律。结果表明,广东沿海赤潮灾害总体呈上升趋势,发生频率不断增加;赤潮高发季节由过去的春季扩展到春夏秋冬季;赤潮发生海域和影响范围不断扩大;鱼毒性藻类和有毒藻越来越频繁地引发赤潮;引发赤潮灾害的生物种类不断增多,由甲藻和硅藻引发的赤潮减少,而由针胞藻类、定鞭藻类和纤毛虫类引发的赤潮明显增多。研究表明,赤潮生物种类繁多和日益增多的海洋污染可能是广东沿海赤潮灾害频发的原因。
The statistical analysis of the historical data of tidal flat disasters in coastal areas of Guangdong during 1980-2007 was conducted to study the temporal and spatial distribution of red tide disasters and the variation of red tide occurrences. The results showed that the overall incidence of red tide disaster in coastal Guangdong was generally on the rise and its occurrence frequency increased continuously. The high incidence of red tide extended from spring to summer, autumn, and winter in the past spring, the sea area and influence range of red tide was expanding, and the toxic algae and toxic algae were more and more frequent The number of red tide caused by dinoflagellates and diatoms decreased while the number of red tide induced by acinar, dinoflagellates and ciliates increased significantly. Studies have shown that a wide range of red tide organisms and increasing marine pollution may be the reason for the frequent occurrence of red tide disasters along the coast of Guangdong.