Water physicochemical parameters were monitored at 10 sites in Lake Luoma from January to December 2014,for assessment of quality and trophic status of the lake water and for analysis of spatio-temporal variation of the water quality with multi statistical analysis methods,including cluster analysis. One-way ANOVA shows that secchi depth,conductivity and concentrations of dissolved oxygen,nitrogen,phosphorus and Chl-a differed significantly from month to month,while spatial differentiation analysis reveals ...