was studied on the condition of serious eutrophic water cultivation,and the purification effect of it was observed.

With an artificial imitation,five dominant hydrophytes,Ceratophyllum demersum,Elodea canadensis,Potamogeton crispus,Myriophyllum spicatum and Vallisneria spiralis,were used to investigate removal efficiency of phosphorus in hypertrophic Lake Donghu water at different weather conditions.

Application of matter element analysis method to water quality eutrophication assessment of lakes;

Relative distance measure model for eutrophication comprehensive evaluation of lake;

The key scientific problems in lake eutrophication studies;

Studies on measures of preventing entrophication of water body of Yanghe Reservoir;

A discussion of entrophication water bioremediation in the Three-Gorges Reservoir Area;

The change of landscape heterogeneity in the entrophication of lakes;

Causes on rich nutrition of Moguhu reservoir in Shihezi and its countermeasures;

This paper is study change of biochemical guid line PH、total nitrogen、total phosphorus、permanganate salt index、clarity degree、CHL a in the Minjiang upper resches (NanPing segment to ShuiKou electricity station),analyse status and pollute reason of Minjiang water quality rich nutrition, put forward relevant cure countermeasure.

Aim at the current rich nutrition situation of yue-cheng reservoir and dong-wu-shi reservoir in Handan city.