贵州青岩油杉种群年龄结构和动态的研究

Age structure and dynamics of Keteleeria davidiana var.chien-peii population in Guizhou Province.

研究了青岩油杉种群年龄结构的类型、动态规律及其与群落演替和环境之间的相互关系 .结果表明 ,青岩油杉种群年龄结构有增长型、稳定型、始衰型和中衰型 4类 ,存活曲线呈现凹型、凸型、间断型和散点型 .随着群落的发育和演替 ,青岩油杉种群年龄结构的变化趋势为增长型→稳定型→衰退型→残留型 .青岩油杉本身的生物生态学特性、群落内阔叶树的发展、地理隔离、人为干扰等是影响青岩油杉种群年龄结构及其动态变化的重要因素 .

Type and dynamics of age structure of Keteleeria davidiana var.chien-peii population and its relationship to community succession and environment were analyzed.The results showed that the age structures were classified into four types:growing,stable,inital and middle sensecent types.The survival curves had concave,convex,disconnected and dotted shapes.Along with development and succession of community,the age structure changes from growing,stabilized,senescent to residual type.The important factors causing change to the age structure were biological features of Keteleeria davidiana var.chien-peii,development of broad-leaved tree species,geographic isolation,and human disturbance