金华山树种分布与环境的除趋势典范对应分析

DCCA on the Relationship between the Main Tree Species with Their Environment in Jinhua Mountain, Zhejiang Province

该文应用中点象限法调查了浙江金华山 33个样地的 2 4种主要树种的优势度 ,并计测了样地中林冠郁闭度、土壤 pH值、土壤含磷量、土壤含氮量和海拔高度 ,估测了样地受人为干扰的强度。应用除趋势典范对应分析 ,研究了 2 4个主要树种与 7个环境因子间的关系。研究结果表明 ,人为干扰强度对金华山植被分布的影响最大 ,其次是海拔高度、土壤含磷量、林冠郁闭度 ,而土壤含N量和 pH值的影响相对较小。

Point-centered quarter method was applied to investigate the dominant values of 24 main tree species in 33 sites in Jinhua Mountain in Zhejiang province, China. The coverage, Soil pH, soil phosphor content, soil nitrogen content,human disturbance grade and altitude of the 33 sites were also collected. The relationships of 24 tree species with the seven environmental factors were revealed in two-dimension ordination plot using Detrended Canonical Correspondence Analysis (DCCA). The results showed that the environmental factors ranked as human disturbance grade, altitude, soil phosphor content, canopy density, soil nitrogen content and soil pH according to their importance to the distribution of the main tree species in the area.