CAJ | 학술논문

对缙云山森林植被的4个优势种群3个年龄级生态位宽度进行了研究.结果表明，川灰木利用资源的能力最强、分布广，为典型的泛化种.大头茶、栲树、马尾松对资源的利用在一定程度上特化，分布上有一定的局限性.马尾松的中龄组与幼龄组特化现象十分显著.缙云山森林植被的先锋种马尾松的发展，导致环境的改变不适于其幼龄个体的生长，群落演替到针阔叶混交林阶段，最后发展为以栲树等为建群种的常绿阔叶林.种群的资源利用能力，是种群分布与群落演替的内在原因，光因子和营养元素(如N)是群落演替的主要外部动力.
대진운산삼림식피적4개우세충군3개년령급생태위 관도진행료연구.결과표명，천회목이용자원적능력최강、분포엄，위전형적범화충.대두 다、고수、마미송대자원적이용재일정정도상특화，분포상유일정적국한성.마미송적중령 조여유령조특화현상십분현저.진운산삼림식피적선봉충마미송적발전，도치배경적개변불 괄우기유령개체적생장，군락연체도침활협혼교림계단，최후발전위이고수등위건군충적상 록활협림.충군적자원이용능력，시충군분포여군락연체적내재원인，광인자화영양원소(여N)시군락연체적주요외부동력.
Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio.The result shows that:Symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong,and distribution is wide.Meanwhile,Go rdonia acuminata,Castanopsis fargesis and Pinus massoniana specialized at some d egree in resource utilizationm,their distribution is limited.Especially,the ju venile of Pinus massoniana specialized outstandingly.With the devlopment of Pinu s massoniana,which is the pioneer population in Mt.Jinyun,the environment become s unfit to it's juvenile.It turns to needle and evergreen broad-leaves mixed fo r est.Because the tolerance toward shading of Gordonia acuminata is lower than tha t of Castanopsis fargesis,Gordonia acuminata will be substituted by Castanopsis fargesis and other evergreen broad-leaves species are the edificators.The popul ation's ability of resource utilization is the inner factor of population distri bution and community succession.The distribution of light and the concentrate of nutrient(such as N)is the outer factors of community succession.