珍稀濒危植物长苞铁杉种群密度效应模型  

A STUDY ON THE DENSITY EFFECT MODEL OF RARE AND ENDANGERED TSUGA LONGIBRACTEATA POPULATION

作　　者：吴承祯[1] 洪伟[1] 

机构地区：[1]福建农林大学林学院,南平353001

出　　处：《林业科学》2002年第4期157-161,共5页Scientia Silvae Sinicae

基　　金：福建省自然科学基金资助项目 (B0 110 0 2 6) ;福建省科委重大资助项目 (闽财指 [2 0 0 1] 3 3 8号 )

摘　　要：The density effect of rare and endangered Tsuga longibracteata population was analyzed by the theoretical model describing the whole density change process of plant population, i.e. N =exp( a ln 2S+b ln S+c) , where N and S represent population density and mean basal area of T.longibracteata at breast height respectively, and a, b, c are parameters. Then, the authors proposed a density effect model considering the effect of different site and associated species on density regulation of T.longibracteata, which was described as N= exp (-0 42426H 0 55323 ln 2S-5 60238H 0 25191 ln S-6 75209H 0 10815 )+ exp (0 20437 ln 2S′-0 095858 ln S′-0 14548), where H and S′ represented mean height of dominant trees and mean basal area of associated species at breast height. The simulated result showed that the model fitted well observed data from T. longibracteata population. Therefore it is very useful in practice, which will provide a scientific basis for density management of T. longibracteata population.The density effect of rare and endangered Tsuga longibracteata population was analyzed by the theoretical model describing the whole density change process of plant population, i.e. N =exp( a ln 2S+b ln S+c) , where N and S represent population density and mean basal area of T.longibracteata at breast height respectively, and a, b, c are parameters. Then, the authors proposed a density effect model considering the effect of different site and associated species on density regulation of T.longibracteata, which was described as N= exp (-0 42426H 0 55323 ln 2S-5 60238H 0 25191 ln S-6 75209H 0 10815 )+ exp (0 20437 ln 2S′-0 095858 ln S′-0 14548), where H and S′ represented mean height of dominant trees and mean basal area of associated species at breast height. The simulated result showed that the model fitted well observed data from T. longibracteata population. Therefore it is very useful in practice, which will provide a scientific basis for density management of T. longibracteata population.

关 键 词：珍稀濒危植物 长苞铁杉 种群密度效应模型 

分 类 号：S791.17[农业科学—林木遗传育种]