In 2001,there were more red tides in the marine areas in China over the previous years. The occurrence time of the red tides was earlier than the conventional years and the key bio-species of the red tides increased.

• 2001年，中国海域赤潮发生次数增多，发生时间提前，主要赤潮生物种类增多，总次数和累计影响面积均比上年有大幅度增加。