沙冬青植物群落研究

沙冬青植物群落是中国沙漠地区特有的常绿植物群落，分布在荒漠区东部及荒漠草原地区。１９９１年在沙坡头地区北部的腾格里沙漠沙葱湾－通湖山一带发现有大片分布，面积达７１３３ｈａ。沙冬青植物群落的建群种沙冬青是第三纪古老的残遗种，我国已将它列入第一批珍贵稀濒危保护植物。不仅在科学研究上具有特殊意义，而且其耐旱性强，是沙漠及黄土地区适宜的防风固沙及水土保持林种，也可用作花卉，值得大力推广。

STUDIES ON THE PLANT COMMUNITY OF AMMOPIPTANTHUS MONGOLICUS

The plant community of Ammopiptanthus mongolicus is evergreen plant community in desertTegion of China. It distributes in the east of desert region and desert steppe region. we discovered that ithas a great area of distribution in Shacongwan-Tonghushan of Tengger Desert, the north of Shapotouarea,in 1991 years. Its area reaches over 7 133 ha.Its constructive species,Ammopiptanthus mongolicus, is an ancient relic species of the TertiaryPeriod. Our country had listed it into first-class protective plants, which is valuable, rare and inimminent danger.Owing to this plant community is evergreen plant community of desert region,therefore itpossesses special meaning in the way of scientific researches, for example,it pcosesses importantreference value to research the ancient weather and weather changes of this region.Constructive species, Ammopiptanthus mongolicus, is evergreen plant, and is also extreme xerophyte.It endures drought very well. It very suits to building windbreak and sand-fixing forests and water andsoil conservation forests in desert region and loess region, therefore it is worth widely planting.