子午岭马栏林区油松种群结构分析  

Population structure analysis of Pinus tabulaeformis in Malan forest region on Ziwuling Mountain

作　　者：郭华[1] 王孝安[1] 

机构地区：[1]陕西师范大学生命科学学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2012年第1期67-71,共5页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家重点基础研究与发展规划(973)项目(2002CB111505-1);陕西师范大学优秀科技预研项目(201002001)

摘　　要：利用生存分析理论,编制了子午岭马栏林区油松种群的静态生命表,分析了油松的径级结构及其密度变化规律;绘制了存活曲线,累积死亡率曲线,死亡密度曲线,危险率曲线及损失度曲线.结果表明:油松的平均密度随径级的增加而减少,反映了密度与径级之间存在着一种负相关性;油松种群存活曲线的变化趋势更接近DeeveyⅡ型,死亡高峰出现在前期和后期阶段.Based on the data about Pinus tabulaeformis population and the theory of survival analysis,the regulations of size-class and changing density of P.tabulaeformis were obtained,and the static life table,the curves of survival,cumulative mortality rate,mortality density,hazard rate and killing valuable populations were drawn.The results showed that the average density of P.tabulaeformis dropped with the increase of size-class,which reflected the negative association between density and size-class,the survival curves tended to be the type DeeveyⅡ,and the peak of mortality appeared in the stage of beginning and end.

关 键 词：油松 种群 径级结构 生命表 生存分析 

分 类 号：Q943.1[生物学—植物学]