关键词: 西藏, 固沙植物, 幼苗, 引种, 适应性

Abstract: 26 plant species for fixing sand dunes were introduced into Xiga ze a rea in Tibet. The germination, emergence, morpho logical characteristics, dynamics of growing height and rooting depth were investigated. Artemisia sphaerocephala, Caragana korshinskii, Baragana intermedia, Atraphaxis bracteata, Ammopiptanthus mongolicus, Hedysarum scoparium, to some extent were in harmony with the local conditions of sand dunes. The species, which had better performance, could be divided into 4 types according to morphological characteristics and 2 types according to germination and emergence features. The ratios of rooting depth/growing height of 4 species, Caragana konshinskii, Garagana intermedia, Ammopiptanthus mongolicus, Stellaria dichotoma var, Lanceolata, grew bigger and bigger with the further developing of the seedlings.

Key words: Tibet Plant species, Sand dune Intro duction, Adaptability