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 .
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.
出处
《应用生态学报》
CAS
CSCD
2001年第6期824-828,共5页
Chinese Journal of Applied Ecology
基金
山西省自然科学基金 (961 0 2 5)
山西省归国人员基金 (99 1 3)
陕西省教育厅重点科研计划资助项目 (0 0JK0 0 7)
关键词
太白红杉
种群结构
径级结构
生命表
存活曲线
种群动态
秦岭
Larix chinensis,Population, Size-class structure, Life table, Survival curve, Population dynamics.