Interspecific association and correlation of dominant species of Lishan Mountain meadow in Shanxi Province

The interspecific association of the dominant species were analyzed by using χ~2-test and three association indices.The association of species was mainly positive and the significant and very significant species were not very much.That was to say the species depended on each other and the community was stable.The interspecific correlation was discussed by using Pearson and Spearman correlation coefficients,and the results said that the species had positive correlation and the Spearman rank correlation test was better than Pearson test.The dominant species were divided into 4 ecological groups by using Pearson constellation diagram and we concluded that the species in the same ecological groups had the same way of utilizing resources and the species in different group had the trend of transform and succession.