The distribution characteristics of nutrients and phytoplankton during the icebound season in Changchun
湖水冰封期营养盐及浮游植物的分布特征

The concentrations of nutrients,chlorophyll a and algae were studied in the ice layer and water during the icebound season in the South lake of Changchun city,Jilin Province. Throughout the icebound season(from the end of November to the middle of February)the concentrations of nutrients,chlorophyll a and algae at the interfaces of ice-water and water-sediment changed slowly,reaching their lowest point in January. During the coldest days,their concentrations were higher in the upper parts of the ice than in...