Abstract: The distribution characteristics of nutrient and chloro phyll a in the ice layer and water during the icebound season in the landscape water of a certain park of Changchun and the relationship between nutrient and chlorophyll a were studied. The results show that the content of nutrient in ice layer was about onethird that of it in water and the content of chlorophyll a in ice layer was about onefifth that of it in water during icebound season. The inorganic nitrogen was main component part and their concentrations were ρ_NH+4>ρ_NO-3>ρ_NO-2 in water; the phosphorus was mostly soluble in water; the concentration of chlorophyll a increased slowly throughout icebound season and ρ_NH+4,， ρ_TP, in the low level water were higher than the corresponding ones in the high level water.

Key words: landscape water, icebound season, nutrient, chlorophyll a, distribution characteristics