荔波瘤果茶种群生命表分析  

Life Table Analysis of Camellia rubimuricata Population

作　　者：杜兴乔[1] 刘映良[1] 

机构地区：[1]贵州师范大学生命科学学院,贵州贵阳550001

出　　处：《安徽农业科学》2009年第33期16613-16615,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技攻关项目(2006BAD03A0303);贵州省优秀人才省长基金(黔省合专字(2005)330)

摘　　要：以种群生命表及生存分析理论为基础,编制了荔波瘤果茶种群静态生命表,并分析了生存率、积累死亡率、死亡密度和危险率等生存函数的曲线变化,进而得出其种群动态趋势。结果表明,①种群前期存活数随龄级急剧下降,只有13%能存活过30年,后期存活值波动不大,存活曲线经统计检验更趋于DeeveyⅢ型。②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。③死亡率曲线与损失度曲线变化一致,荔波瘤果茶种群生长过程中出现了2次死亡高峰期。On the basis of population life table and the theory of survival analysis, the static life table of Camellia rubimuricata 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 was obtained. The results showed that ： a） The prophase survival rate of population was decreased sharply along with the increasing of age grade, only 13% could grew into the 30 years and there was little fluctuation in anaphase survival rate. The statistical test indicated that the survival curve tended to be DeeveyⅢ-type. b） The analysis on survival function showed that the accumulated mortality was monotonously increased and the survival rate was monotonously decreasedand, the variation in prophase was bigger than that in anaphase, c） The curve variation of C. rubimuricata＇s mortality was similar to the dynamic trend of its loss degree. Two death peaks appeared in the population growth process.

关 键 词：荔波瘤果茶 种群 生命表 存活曲线 

分 类 号：S718.541[农业科学—林学]