Study on the Introduction and Early Adaptability of Adaptable Afforesta tionTree Provenances in Hot and Ar id Va lley, Jinsha jiang River Provenance Differentia tion of Seedling Character istics of Taxus ch inens isvar. m a ire r and Its Seedling Ra ising Env ironment Influence Photosyn thetic Ecophysiolog ica l Respon ses of D ifferent Azadirach taindica Provenances to Change of Tempera ture Provenance and Fam ily Tr ia ls for B e tu la a lnoides in Pingx iang, Guangx iI. Early Var ia tion of Growth Tra its Phenotypic Var ia tion of Geographic Provenance in Tsuga dum osa Early Growth Response of Super ior Provenance ofMa sson Pine to D ifferent Planting Den sities