黔中喀斯特植被几种树种种群竞争

Preliminary Study on the Population Competition Among the Major Component Species of Karst Vegetation in the Middle Area of Guizhou

黔中喀斯特植被的主要组成树种间普遍存在着竞争关系．但不同树种间竞争强度有所差异。大多数树种间的竞争系数小于１，能很好地共存。用Ｌｏｔｋａ－Ｖｏｌｔｅｒｒａ模型进行预测，黔中喀斯特植被中，只要有常绿树种存在，群落最终将发展成为以常绿成份占优势的常绿落叶阔叶混交林。目前个别树种占突出优势的群落，将发展成为多个树种为共优种的群落。

The competition occurs widespreadly among the major component species of Karst vegetation in the middle area of Guizhou , but the intensity of competition vary among the species. A lot of competitive coefficients is less than 1, and the species can coexist well. According to Lotka-Volterra model,the community will become evergreen-deciduous breadleaf mixed forest dominiated by evergreen trees through succession if the evergreen trees exist. The community dominated by one or two will become that condominated by many species.