采用样地调查法，对新疆乌恰县沙冬青〔Ammopiptanthus mongolicus （Maxim. ex Kom.） S. H. Cheng〕群落的物种组成进行分析。结果表明：沙冬青群落共有植物23种，隶属于13科21属，其中，苋科（Amaranthaceae）种类最多，含4属5种；61.5%的科仅含1属1种。群落中植物生活型中半灌木的占比最高（26.1%）；灌木、小灌木和多年生草本的占比次之，均为21.7%，一年生草本的占比最低（8.7%）。沙冬青的相对频度和重要值最高，分别为12.7%和26.3%，为群落的优势种。综上所述，新疆乌恰县沙冬青群落物种组成简单，这与该地区所面临的人为干扰以及严酷生境条件密切相关，建议加强保护现有沙冬青群落，并建立沙冬青种子库，通过迁地移栽和人工育苗扩大群落规模。

The species composition of Ammopiptanthus mongolicus （Maxim. ex Kom.） S. H. Cheng community in Wuqia County, Xinjiang Uygur Autonomous Region was analyzed by using the sample plot survey method. The results show that there are a total of 23 species belonging to 21 genera of 13 families in A. mongolicus community, among which, the species in Amaranthaceae are the most, containing 5 species of 4 genera; 61.5% of the families contain only 1 species of 1 genus. Among the plant life forms in the community, the proportion of subshrubs is the highest （26.1%）; followed by shrubs, undershrubs, and perennial herbs, each accounting for 21.7%, while the proportion of annual herbs is the lowest （8.7%）. The relative frequency and importance value of A. mongolicus are the highest, which are 12.7% and 26.3% respectively, and it is the dominant species in the community. In conclusion, the species composition of A. mongolicus community in Wuqia County, Xinjiang Uygur Autonomous Region is simple, which is closely related to the artificial disturbances and harsh habitat conditions in the region. It is recommended to strengthen the protection of existing A. mongolicus communities, establish a seed bank for A. mongolicus, and expand the community size through ex situ transplantation and artificial cultivation.