文档介绍：学科代码:081801
学号:080902010081
贵州师范大学(本科)
毕业论文
题目:青桐种群生命表分析
学院:生命科学学院
专业:生物工程
年级:2008级
姓名:朱其全
指导教师:刘映良(教授)
完成时间:2012年5月2日
青桐种群生命表分析
朱其全
(贵州师范大学生命科学学院,贵州贵阳550001)
摘要:为了解青桐种群生命过程,对贵阳市云岩区相宝山青桐树林进行群落学调查,编制生命表并分析了生存率、积累死亡率、死亡密度、危险率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,%后期趋于稳定存活曲线趋于DeeveyⅢ型。生存函数分析表明,积累死亡率单调增加,生存率单调下降,其增加或下降幅度是前期高于后期。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次死亡高峰期。
关键词:青桐;种群;生命表;存活曲线;死亡率
Life Table analysis of Firmiana platanifolia Population
Zhu Qi-Quan
(School of Life Sciences,Guizhou Normal University,Guiyang,Guizhou 550001,China)
Abstrac:In order to understand the Firmiana platanifolia population life process,
surveied munity of XiangBaoshan Firmiana platanifolia woods in Yunyan District, Guiyang static life table of Firmiana platanifolia population curve variations of survival functions including survival rate,accumulated mortality,death density and danger probability were more,the dynamic tendency of population amount of Firmiana platanifolia was obtained, results showed that:under 10 years Firmiana platanifolia survival decreased dramatically,the mortality rate of % period tends to be stable,the survival curve tended to be DeeveyⅢ.The analysis on survival function showed that the accumulated mortality was monotonously increased and the survival rate was monotonously var