It indicates that sandy plants are more abundant in steppe region.Leguminosae, Compositae, Chenopodiaceae and Gramineae are dominant families, Artermisia L., Corispermum L.

• 科属组成上，是以豆科、菊科、藜科、禾本科为主，蒿属、虫实属、棘豆属、黄芪属为含沙生种类较多的属。