Abstract:Root distribution and canopy structure parameters of S. gordejevii in semi fixed sand dunes, fixed sand dunes and inter dunes lowland were investigated. The population in the semi fixed sand dunes had the most developed root systems, followed by the population in the fixed sand dunes, and that in the inter dunes lowland was the last. The number of thick roots was closely related to the soil water content and volume weight of the soil, while that of fine roots closely related to the soil compactnes...