Abstract: The effect of soil salinity on formation of halophyte community complex and its species compositions, patterns of horizontal distribution and species diversity in Keerqin Sandy Land of Northeast China was studied. The constancy of total contents of potassium sodium, calcium and magnesium, and variation regularity of sodium content in a species were explained. Based on sodium content and composition proportion of potassium, sodium, calcium and magnesium in a plant, adapted patterns of plant to saline-alkali soil and their divided method were proposed. According to the method, meadow plants in studied area could be divided into four patterns: Na>K>Ca>Mg type; K>Na>Ca, Mg type; K>Na, Ca, Mg type; K>Ca, Mg>Na type.

Key words: Halophyte community, Mineral element, Soil salinity