An investigation of Ulmus pumila var.sabulosa was carried out in the different habitats of Hunshandake sandy land

including both seedling density and seedling growth.Seeding density of dispersal under single trees and the edge of forest was studied.Its natural regeneration was analyzed using population ecology method and mathematical statistic method.Results showed that by seeding density

land units was in the order of shifting dune semi-fixed sandy land fixed sandy land.Seedlings grew badly in fixed sandy land and shifting dune and seedling death phenomenon was serious in shifting dune.Seedlings grew well in semi-fixed sandy land.Compared with fixed sandy land and shifting dune

semi-fixed sandy land was suitable to the habitat of natural regeneration.Seedlings were mainly distributed within the area 20 m from the edge of forest and outside 20 m

seedling density was reduced obviously.Wind direction had greater influence on seedling density and by seeding density.