【摘要】 在秦岭太白山、光头山、玉皇山和冰晶顶等 4个地段分别设置了 4个样地 ,用样方法对太白红杉种群进行了调查 .共做样方 2 80个 .分析了太白红杉的群落学特征、径级结构及其密度变化规律 ;编制了太白红杉的静态生命表 ;绘制了存活曲线和死亡曲线 ;从多角度研究了太白红杉种群的动态变化规律 .结果表明该种群存活曲线趋向于Deevey Ⅱ和Ⅲ之间 ,高径级种群趋向于稳定 ,低径级种群则反之 .幼年个体补充不足 ,严重影响着该种群的生存和发展 .更多还原

【Abstract】 In Qinling Mountain,4 stands were set up at Taibai Mountain,Guangtou Mountain,Yuhuang Mountain,and Bingjingding Mountain respectively.280 plots in Larix chinensis population were investigated by sampling method.The community feature,size-class structure,and regulation of changing density were analyzed,as well as worked out the survival curve,death curve,and life table.The results showed that the populations had one peak of mortality between 25～30cm,and the survival curve trended to be the type between Deevey Ⅱ and Ⅲ.The populations were stable in large size-class and variable in small size-class.The restricting factor for the survival and development of the population was short seedling.更多还原