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对古尔班通古特沙漠梭梭种群进行样地调查,从各构件生物量分配特征、开花和结果特征、不同发育阶段的生殖分配、同化枝与生殖生物量之间关系等方面研究了3种生境下梭梭种群的生殖分配特征。结果表明:3种生境中各构件生物量分配格局均具有显著差异,且变化趋势不一致,梭梭平均生殖分配在0.64%～1.5%;3种生境下,梭梭开花和结果特征均具有显著差异,表现出砾石生境>沙质生境>土质生境。不同生境梭梭生殖分配均随径级的增加变化不同,砾石生境和沙质生境样地随着径级的增加而降低,而土质生境样地随着径级的增加而增加;不同生境类型下梭梭同化枝、生殖生物量与径级的关系不同;梭梭的生殖分配和同化枝生物量之间呈线性或多项式正相关。
The population of Haloxylon ammodendron in the Gurbantunggut desert was investigated. From the aspects of biomass allocation characteristics, flowering and fruiting characteristics of each component, reproductive allocation in different developmental stages, the relationship between branch and reproductive biomass, Reproductive Allocation Characteristics of Haloxylon ammodendron Population in Different Species. The results showed that biomass distribution patterns of all the three habitats were significantly different and the trend of variation was inconsistent. The average reproductive distribution of Haloxylon ammodendron was between 0.64% and 1.5%. The flowering and the characteristics of Haloxylon ammodendron were significantly different among the three habitats , Showing gravel habitat> sandy habitat> soil habitat. The reproductive allocation of Haloxylon ammodendron var. Habitat varied with the increase of diameter classes. The gravel habitats and sandy habitats decreased with the increase of diameter classes, and the soil quality habitats increased with the increase of diameter classes. In different habitat types, There was a linear or polynomial correlation between reproductive allocation of Haloxylon ammodendron and biomass of assimilating branches.