2024年7月21日 星期日
环境因子对福建省山仔水库水华微囊藻生长的影响
The influence of the environmental factors on the growth of Microcystis flos-aquae in Shanzi Reservoir of Fujian Province
2005年 第14卷 第3期 页码[42-46]    下载全文[0.7MB]  
摘要

研究光照、温度和磷酸盐对福建省山仔水库水华微囊藻〔Microcystis flos-aquae (Wittr.) Kirchn.〕SZ200307生长的影响。结果表明:随着光照强度的增加,水华微囊藻SZ200307的生长加快,但过强的光照强度反而抑制其生长,最适光照强度为4000~4500lx;20℃~30℃,水华微囊藻SZ200307有较高的比增殖率,30℃最适合其生长;当磷的浓度较低而其他条件不变时,添加外源性磷,水华微囊藻SZ200307增长迅速;当磷浓度高于0.258mg·L-1,磷元素不再是其增长的限制性因子,温度、光照等其他环境因子将限制其增殖。

Abstract

The influences of light intensity, temperature and phosphate on the growth of Microcystis flos-aquae (Wittr.) Kirchn. SZ200307 in the culture medium and in the water of Shanzi Reservoir in Fujian Provincewere studied. The results indicated thatwith the increasing of ligth intensity, M. flos-aquae SZ200307 began growing faster. When the light intensity was high enough, the growing was inhibited.M. flos-aquae had high ratio of multiplication between 20℃ and 30℃ . The results showed that light intensity 4 000 -4 500 lx and temperature 30℃ were the optimum condition for the growth of M. flos-aquae SZ200307. Increasing the external phosphorus had a great effect on the growth of M. flos-aquae SZ200307 if the concentration of phosphorus was low. It is not phosphorus but light intensity or temperature etc. may become the dominant factors on the growth of M. flos-aquae when the concentration of phosphorus is higher than 0.258 mg·L-1.

关键词环境因子; 水华微囊藻; 富营养化; 水库;
Key wordsenvironmental factor; Microcystis flos-aquae(Wittr.)Kirchn.; eutrophication; reservoir
作者苏玉萍1,2,郑达贤2,陈娜蓉1,王家乐1,林婉珍1
所在单位1.福建师范大学化学与材料学院环境科学系,福建福州350007;
2.福建师范大学地理科学学院,福建福州350007
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基金项目福建省自然科学基金资助项目(D0310015); 福建省教育厅A类(JA03029)资助项目;