塔克拉玛干沙漠优势植物化学成分特征

塔克拉玛干沙漠优势植物化学成分的若干特征与土壤盐分的性质相联系，对优势植物及植物群落的化学元素特征型、盐生植物类群的划分进行了讨论。在塔克拉玛干沙漠环境中，藜科植物占有一定优势、且含有较高的可溶性盐分和灰分，而海蓬子、盐节木、盐穗木是一类富含Ｎａ和Ｃｌ的植物，芦苇、小獐毛是富含ＳｉＯ＿２的植物。

CHEMICAL COMPOSITION CHARACTERISTICS OF DOMINANT PLANT SPECIES IN THE TAKLIMAKAN DESERT

This paper dealt with the chemieal composition characteristics of dominant plant speciesin the Taklimakan Desert.Some characteristics of the dominant species are closely related to the soilsalt properties.Based on the chemical element characteristics of the dominant plant species andassociations,a simple classification of halophyte types was made,Chenopodiaceous plant are the mostcommon dominant species of the desert and have a higher soluble salt contents,Such plants asSalicornia europaca Halostachys caspica and Halocnemum strobilaceum etc are Nacl-rich species,whereasPhragmites communis and Aeluropus litoralis etc are Si-rich species.