青桐种群生命表分析  

Life Table Analysis of Firmiana platanifolia Population

作　　者：刘璐[1] 罗小菊[2] 刘映良[1] 王帅[1] 胥晏 Liu Lu Luo Xiaoju Liu Yingliang Wang Shuai Xu Yan(School of Life Sciences, Guizhou Normal University, Guiyang, 550001 Library, Guizhou Normal University, Guiyang, 550001)

机构地区：[1]贵州师范大学生命科学学院,贵阳550001 [2]贵州师范大学图书馆,贵阳550001

出　　处：《分子植物育种》2017年第2期781-784,共4页Molecular Plant Breeding

基　　金：贵州省"十二五"科技计划重大专项(黔科合重大专项字20126011);贵州省社会攻关科技项目(黔科合SY字20133087)共同资助

摘　　要：为了解贵阳青桐种群生命过程,对贵阳市云岩区相宝山青桐树林进行调查和数据统计,编制相宝山青桐种群的生命表,分析其的生存率、危险率、积累死亡率和死亡密度等生存函数的曲线变化,进而得出青桐种群动态趋势,研究结果表明:青桐种群10年以前存活数急剧下降,死亡率达97.5%后期趋于稳定,存活曲线趋于DeeveyⅢ型。生存函数分析表明,青桐树林的生存率为单调下降,而积累死亡率为单调上升,其整体的变化幅度为后期低于前期。死亡率曲线与损失度曲线变化一致,青桐种群生长过程中出有两次死亡高峰期。In order to understand the Firmiana platanifolia population life process of Guiyang, we did investigation and data statistics in Guiyang city district Baoshan sculpture woods. The static life table of Firmiana platanifolia population was compiled. The curve variations of survival functions including survival rate, accumulated mortality, death density and danger probability were analyzed. Furthermore, the dynamic tendency of population amount of Firmiana platanifolia was obtained. The results showed that% Firmiana platanifolia survival decreased dramatically 10 years ago; The mortality rate was 97.5% and then tended to be stable. The survival curve tended to be Deevey Ⅲ. The analysis on survival function showed that the accumulated mortality was monotonously increased and the survival rate was monotonously decreased. The variation in prophase was bigger than that in anaphase. The curve variation of Firmiana platanifolia＇s mortality was similar to the dynamic bend of its loss degree. Two death peaks appeared in the population growth process.

关 键 词：青桐 种群 生命表 存活曲线 死亡率 

分 类 号：S792.37[农业科学—林木遗传育种]