广东省微囊藻水华成因分析及防控措施

Cause Analysis and Prevention and Control Measures of Microcystis Algal Blooms in Guangdong Province

微囊藻水华对水生态及供水安全都有严重影响。文章从广东省实际情况出发,结合国内外微囊藻研究成果,对微囊藻水华的成因进行探索。结果表明:广东省微囊藻水华的影响因子主要有温度、光照、流速、降水、氮磷浓度、微量元素含量、藻种来源以及植食性水生生物数量变化等。为减少水华发生概率,应该尽量减少外源营养物质和微量元素的流入,合理捕捞并适时投放鱼苗。当非浅水湖库发生微囊藻水华时,可以采用外源补水、人工降雨等方式。

Microcystis algal blooms have a serious impact on the aquatic ecosystem and water supply security.From the actual situation of Guangdong Province,combined with microcystin research at home and abroad,to explore the causes of Microcystis bloom.The results showed that： Guangdong Province Microcystis bloom through the impact factor of temperature,light,flow,precipitation,nitrogen and phosphorus,trace element contents,algal sources and herbivorous aquatic organisms,the number of changes.In order to reduce the probability of bloom,should minimize the inflow of exogenous nutrients and trace elements,rational fishing and timely released fish fry.When the non-shallow water lakes and reservoirs occurrence of Microcystis bloom,you can use exogenous replenishment,artificial rainfall.