典型湖泊水华特征及相关影响因素分析

通过2011-2015年对太湖、巢湖和滇池水华高发季节的连续监测，以藻类密度和水华面积为判据评价了3个湖体的水华情况及变化趋势，探讨了水华发生的主要影响因素。结果表明：太湖水华程度以"轻度水华"为主，巢湖水华程度以"轻微水华"为主，滇池水华程度以"中度水华"为主；太湖、巢湖和滇池水华规模均以"零星性水华"为主；太湖和巢湖藻类密度与水温、pH、溶解氧、总氮、总磷和高锰酸盐指数均呈显著正相关，与透明度呈显著负相关，与氨氮无显著相关性；滇池藻类密度与水温、总磷和高锰酸盐指数均呈显著正相关，与透明度和氨氮呈显著负相关，与pH、溶解氧和总氮无显著相关性。

Analysis on the Characteristics and Impact Factors of Water Bloom in the Lake

Through continuous monitoring work on the Taihu Lake, Chaohu Lake and Dianchi Lake during bloom season in 2011-2015, the water bloom status and trend of the three lakes were described by algae density and water bloom area, and then the main factors on blooms occurred were explored. The results showed that:Water bloom degree of the Taihu Lake was priority to mild blooms, the Chaohu Lake was priority to slight blooms, the Dianchi Lake was priority to moderate blooms. The bloom scales of three lakes were priority to sporadic blooms. There was a significant positive correlation between algae density and water temperature, pH, dissolved oxygen, total nitrogen, total phosphorus and potassium permanganate index in Taihu Lake and Chaohu Lake, but significant negative correlation with transparency, and not significant correlation with ammonia. There was a significant positive correlation between algae density and water temperature, total phosphorus, and potassium permanganate index in the Dianchi Lake, but a significantly negative correlated with transparency and ammonia nitrogen, there was no significant correlation between algae density and pH, dissolved oxygen and total nitrogen.