Abstract: Ecological restorations and rebuilding is a hot topic of ecology. According to investigation in the southern mountainous areas of Jiuxian, Wulian and Kunyu mountain, we analyze the importance value, niche breadth and niche overlap of 10 essential species, and find that Pinus sylvestris L.is not the absolutely dominant species, which has lower value of niche overlap with other species. By contrast Lespedeza davidii Franch in shrub and Eriophrum comosum in herbage dominate the landscape everywhere. The major community should be the P.sylvestrisL.davidiiE.comosum in granite of Shandong island.