关键词: 刺槐, 克隆种群, 克隆整合 , 种群动态, 种群结构

Abstract: The population structure and dynamics of Robinia pseudoacacia clones are studied．The result indicates that the clone population has relative stable and pyramidal number structure，made up of abundant infancy daughter ramets with high death rate，and few adult daughter ramets with low death rate．Clones produce daughter ramets at high age stage and the number of daughter ramets is increasing．The diameter at ground height (DGH)，height and canopy width of genet are significantly larger than those of daughter ramets．The growth of height and canopy width is accelerated at infancy stage，but relatively stable at adult stage．The growth and dynamics of daughter ramets are affected by genet though clonal integration，and competition from shrubs and herbage of surroundings．

Key words: clonal integration , population dynamics, population structure, clonal population, Robinia pseudoacacia L.