水分通常是影响荒漠植物生长的主要限制因子，然而当前很少有关于荒漠群落中植物水分利用效率的报道。
Water is usually considered to be the key limiting factor for growth of desert plants, yet there is little information available of the water use efficiency of species within a desert community.
主要分布在中国西北荒漠地区，是一种耐干旱、耐盐碱、耐风蚀的优良的防风固沙植物。
It mainly distributed in arid-desert areas of northwest in China, it has strong tolerance to the drought stress, salt stress, wind erosion stress.
利用扫描电子显微镜对我区草甸草原、典型草原及荒漠草原中30种主要植物的花粉粒进行了观察。
Pollen grains collected from 30 grassland species covering the meadon plants, typical grassland plants and dessrt steppe plants were examined by scanning electron microscope.
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