森林群落优势种群与生态因子的关联度分析——以缙云山常绿阔叶林为例

用灰色系统理论的关联度,对缙云山常绿阔叶林次生演替系列群落优势种群及其生态因子的相关性进行了尝试性的研究.结果表明,这一方法是有效的.对常绿阔叶林次生演替系列主要优势种群而言,没有一个因子起着绝对的主导作用.8个优势种群对应9个生态因子,以森林先锋树种马尾松,耐旱性强的顶极种山茶科的大头茶和银木荷受控限度最小;乔木第二亚层顶极种白毛新木姜子、川山矾和光叶山矾受控限度最大.关联度分析结果表明,常绿阔叶林次生演替的潜在主导因子是群落的发育时间和土壤条件.

ANALYSIS OF RELATIONAL GRADE OF DOMINANT SPECIES AND ECOLOGICAL FACTORS IN COMMUNITY OF FOREST-----For example the evergreen broad-leaved forests of Jinyun Mountain, Chongqing, Sichuang

This paper, with the method of degree of relatedness of the giey system theory, trilly studied the relatedness of dominant populations and ecological factors to the secondary sere of community in the evergreen broad-leaved forest of Jinyun mountain. The results show that this method is effective. The relation of plants and environmental factors evidently reflect? the fact that different factors have different influence on the same plant and the same factor also have different influence on different plants. For the major dominant populations to the secondary eere of community in the evergreen broad-leaved forest, none of a facto: ic absolute leading effect. Eight dominant populations is corresponding to nine ecologicalfactors, in which the minimum limitary controled species are pioneer species ----- Pinusmassoniana and climax species-----Gordonia acuminata and Schima argentea which have strongdrough resistance and the maximum limitary controled species are climax species-----Neolitscaaurata var. glauca, Symplocos setchuanensis and Sympiocos lancifolia which lie to the second layer trees. The conclusion with the metnod of degree of relatedness is that the latent leading factors to the secondary sere in the evergreen broad-leaved forest are recovery time and soil conduction of community.