种群大小对缙云卫矛种群数量动态的影响  

Effect of population size on the demography of Euonymus chloranthoidesYang

作　　者：胡世俊[1] 闫晓慧[2] 何平[3] 张益锋[3] 

机构地区：[1]西南林业大学林学院,国家林业局西南地区生物多样性保育重点实验室,云南昆明650224 [2]西南林业大学林学院 [3]西南大学生命科学学院

出　　处：《山东林业科技》2013年第1期8-11,共4页Journal of Shandong Forestry Science and Technology

基　　金：国家自然科学基金项目(No.30070080;No.31200319)

摘　　要：缙云卫矛为重庆市特有濒危植物,本文对破碎化生境下缙云卫矛种群的数量统计进行研究,以探讨种群大小对该物种种群数量动态的影响。年龄结构图反映出种群越小,幼龄个体的比例也越小;种群静态生命表反映出种群越小,其个体寿命有减小的趋势;Leslie矩阵分析表明各种群的数量动态均呈下降趋势,种群越小,其数量下降的越快。对该物种的保护应首先防止生境破碎化的加剧,其次要防止种群大小的进一步降低。Euonymus chloranthoides Yang is an endangered shrub endemic to Chongqing. The effect of population size on the demography of this plant in fragmented habitats is studied. Population age structure show that the ratio of seedlings de- clines with the population size. The population life table show that individual longevity declines with the population size. The results of Lesliematrix analysis show that all the populations of E. chloranthoides are declining populations, and the number of individual declines with their population size. Habitat Protection is the first step to conserve this species, furthermore, preven ting the population from further decline is also needed.

关 键 词：种群大小 生境破碎化 种群统计 缙云卫矛 

分 类 号：Q948.155[生物学—植物学]