对中国东部荒漠草原——内蒙古苏尼特左旗、苏尼特右旗以及二连浩特荒漠草原的主要植物群落类型及特征进行了系统性调查研究，对《中国植被》未收录的主要植物群系类型进行了补充。以遥感技术、1∶100万中国植被图为基础，当地资料记载为补充，调查了100 m×100 m植物群落样地60个。根据样地内植物种重要值排序，完成群丛、群系的命名、分类。应用T检验及相关性等统计方法完成分析。结果表明：该区域小半灌木荒漠草原群系组有盐爪爪群系、珍珠猪毛菜群系、红砂群系、小叶锦鸡儿群系、狭叶锦鸡儿群系、驼绒藜群系、蒙古莸群系、松叶猪毛菜群系、长梗扁桃群系、霸王群系、沙木蓼群系；丛生禾草荒漠草原群系组有戈壁针茅群系；杂类草荒漠草原群系组有银灰旋花群系、碱韭群系、蒙古韭群系、细叶薹草群系等。其中，《中国植被》未收录的群系包括沙木蓼群系、蒙古莸群系、小叶锦鸡儿群系、狭叶锦鸡儿群系、松叶猪毛菜群系、长梗扁桃群系以及银灰旋花群系、蒙古韭群系、细叶薹草群系等。在该区域荒漠草原，灌木群落在植物种高度、盖度及生物量（干）方面与草本群落有显著性差异，且高于草本群落；灌木植物对草本植物生长的影响有一定的群落尺度范围；在灌木群落内，灌木植物种密度、生物量对草本植物种丰富度、盖度及高度生长有一定的负影响，对群落外的草本植物影响不显著。

The study investigated systematically the main plant community types and characteristics in the eastern desert steppe of China （for example of Sonid Left Banner， Sonid Right Banner， and Erenhot region）. And supplemented the plant formations unrecorded in “Vegetation of China”. 60 plots were investigated by using remote sensing technology， 1∶10⁶ scale vegetation distribution map， and local document records. Plant associations and formations were named based on the sorting of species important values in each plot. Micro-subshrub desert steppe formation groups included Form. Kalidium foliatum， Form. Salsola passerina， Form. Reaumuria songarica， Form. Caragana microphylla， Form. Caragana stenophylla， Form. Ceratoides latens， Form. Caryopteris mongholica， Form. Salsola laricifolia， Form. Amygdalus pedunculata， Form. Sarcozygium xanthoxylon and Form. Atraphaxis bracteata. Bunchgrass desert steppe formation groups included Form. Stipa tianschanica var. gobica. Forb desert steppe formation groups included Form. Convolvulus ammannii， Form. Allium polyrhizum， Form. Allium mongolicum， Form. Carex etc. Plant formations unrecorded in “Vegetation of China” included Form. Atraphaxis bracteata， Form. Caryopteris mongholica， Form. Caragana microphylla， Form. Caragana stenophylla， Form. Salsola laricifolia， Form. Prunus pedunculata， Form. Convolvulus ammannii， Form. Allium mongolicum，Form. Carex etc. The study also showed shrub community height， coverage and dry biomass were significantly higher than that for grass communities in the region. Shrub density and biomass had negative effect on grass species abundance， coverage and height in the shrub communities， and had non-significant effect on grass outside the communities.