Study on the distribution pattern of population and community of national protected Glycine soja in Beijing region

Two belt transects with 128 quadrats each were used to study the distribution pattern of Glycine soja community in the watershed of Beishahe River in Beijing region. The result showed that the distribution patterns of dominant populations were aggregate type in the two transects. The pattern of community was closely correlated with that of main dominant species. Pattern scale of community was consistent with that of G. soja and Artemisia lavandulaefolia in the first transect, and this result indicated that the community distribution pattern was mainly determined by the pattern of two dominant species. However, the pattern scale of community was consistent with that of G. soja and Arthraxon hispidus in the second transect. Pattern scale of the second transect was larger than that of the first transect and the differences of pattern scale of two communities were little because the environmental difference was little.