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《Journal of Anhui Agricultural Sciences》 2009-06
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Analysis on the Population Life Table of Rhododendron delavayi

WANG Xin et al(School of Life Sciences,Guizhou Normal University,Guiyang,Guizhou 550001)  
[Objective] The study aimed to discuss the population statistic of Rhododendron delavayi preliminarily.[Method] On the basis of population life table and the theory of survival analysis,the static population life table was compiled.The variations of survival functions including survival rate,accumulated mortality and death density,as well as function of danger probability were analyzed.Furthermore,the dynamic variation of population amount was analyzed.[Result] The analysis on the life table showed that the dynamic trend of population loss degree of R.delavayi was similar to the variation of its mortality which was fluctuating.Three death peaks appeared in the population.The prophase survival rate of population was decreased sharply along with the increasing of age grade,only 4.3% could grow into the 8th age grade and there was little fluctuation in anaphase survival rate.The statistical test indicated that the survival curve tended to be DeeveyII-type.The analysis on survival function showed that the accumulated mortality was monotonously increased,the survival rate was monotonously decreased and the variation in prophase was bigger than that in anaphase.The variation trends of death density and danger probability functions were basically identical.[Conclusion] The study provided theoretical basis for reasonably exploiting R.delavayi growing in Baili azalea area.
【Fund】: 贵州省科技重大专项(黔科合重大专项字[2007]6005号);; 国家农业科技成果转化基金项目“贵州高山杜鹃集约化、规模化种植技术示范与应用”
【CateGory Index】: S685.21
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