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基于28个20mx90m样地的调查数据,利用Lotka-Volterra模型,本文分析了长白山北坡阔叶红松(Pinuskoraiensis)林和云冷杉林(也叫暗针叶林)群落交错区优势树种之间的竞争及动态。结果显示:在自然条件下,群落将向两个方向分化,一是以云杉(PiceajezoensisandP.koraiensis)和冷杉(Abiesnephrolepis)为优势的群落,并在达到平衡时冷杉占绝对优势(相对优势度的77.1%):另一种是以红松或云冷杉和阔叶树占绝对优势的针阔混交林,并在达到平衡时,阔叶树在阔叶红松林中占相对优势度的50%,在云冷杉一阔叶林类型中占66%。同时,本研究说明:(1)阔叶红松林和云冷杉林都是长白山气候顶极群落:(2)交错区具有过渡性质:(3)森林群落的分化结果说明演替的方向受局部生境的影响。图1表3参24。
Based on the survey data of 28 20m × 90m plots and the Lotka-Volterra model, this paper analyzes the competition between the dominant tree species in the Pinus firiensis forest and the spruce-fir forest (also called dark coniferous forest) dynamic. The results showed that under natural conditions, the community will differentiate in two directions. One is the community dominated by Picea jezoensis and P. koraiensis and Abiesnephrolepis, and the absolute superiority (relative dominance 77.1%). The other is coniferous-broad-leaved mixed forest dominated by Korean pine or spruce and broad-leaved trees. When the balance reached, the broad-leaved tree accounted for 50% of the relative dominance in the broad-leaved Korean pine forest. Hardwood forest type accounted for 66%. At the same time, the study shows that: (1) Both the broad-leaved Korean pine forest and the spruce-fir forest are the climax communities in Changbai Mountain: (2) The transitional zone has the transitional nature: (3) The differentiation results of the forest community indicate that the succession direction is affected by the local habitat Impact. Figure 1 Table 3 Reference 24.