镜泊湖藻类生长和湖泊富营养化预测初探

PRELIMINARY OBSERVATIONS OF ALGAL GROWTH AND LAKE EUTROPHICATION IN JINGBO LAKE

作者在分析了影响镜泊湖藻类生长的主要因素的基础上，建立了镜泊湖藻类生长模型，利用实验数据和有关资料对镜泊湖藻类生长和湖泊富营养化趋势迸行了预测。作者认为：在镜泊湖藻类的生长季节（５—１０月），Ｎ浓度始终不是主要限制因子；在藻类生长旺盛的７、８两月，Ｐ浓度成为主要限制因子；在５、６、９、１０四个月中，Ｐ浓度和温度均可能成为主要限制因子，但随着Ｐ浓度的提高，温度成为主要限制因子，客观上河湖泊富营养化的发展起着遏制作用。通过检验，本文模型的输出能反映镜泊湖藻类生物量随时间变化的一般规律。

After analyzing the main factors which affect algae growth in Jingbo Lake, a modelfor algae growth was constructed and the algal growth and eutrophication was predicted usinglaboratory and field data. In the algal growing season, N was not a main limiting factor in thelake. In July and August, P was the main limitation. In May, June, September and October,both P and temperature became limiting for algal growth. But with the increasing of P concentration, temperature became the main limitation, which played an adverse role in lake eutrophication. The model testing indicates that output of the model was able to reasonably reflect theregularity of algal growth in Jingbo Lake.