芦芽山森林优势植物种群竞争与群落演替

本文采用样方取样的方法对芦芽山森林群落进行了调查研究,并应用LotkaVolterra竞争方程描述了优势植物种群的竞争。结果表明,芦芽山森林群落优势种群的竞争能力依次为:青杄>白杄>华北落叶松>油松>山杨>白桦。竞争的结果,证明了寒温性针叶林是本区的演替顶极,优势种群竞争是群落演替的主要动因。

Study on the Competition Among Forest Dominant Plant Populations and Vegetation Succession in Luya Mountains

Sampling method has been used in studying forest comrnunities in LuYa Mountaias in this papet. The relative dominance of dominant plant populations has been regarded as the measure of the niche overlap and their competition has been diseussed with Lotka-Volterra equation of competition. The result indieates that theorder of competition ability is as follows. Picea meyeri>p.wilsonii>Larix prineipis-ruppreehtii>Pinus tabulaeformis>PoPulus davidiana>Betula platyphylla. We can see f.romthe above that the cold-temperate coniferous trees are the climax, vegetation succession in this area and the competition of dominant plant populations is the important cause of vegetation sueeession. Aecording to the result above. the author puts foward the ideas how to manage the forest communities in this mountainous area.