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大别山五针松(Pinus dabeshanensis)是大别山区特有种,最大种群分布于安徽省岳西县大王沟。采用空间序列代替时间的方法分析种群结构,编制种群特定时间生命表,绘制死亡率曲线和消失率曲线,并用4个生存函数进行种群的生存分析;同时结合谱分析方法,分析了大别山五针松种群数量的动态变化。结果表明:大别山五针松种群数量少,结构存在波动性。幼苗阶段个体较丰富,幼树阶段个体较少,种群趋于衰退。种群死亡率和消失率曲线变化趋势基本一致,在第5龄级出现峰值。4个生存函数曲线表明,大别山五针松具有前期快速减少、中期稳定和后期衰退的特点。谱分析显示,大别山五针松种群动态除受基波影响外,还具有明显的小周期波动,谐波A3和A4处的周期波动与个体生长有关。
Pinus dabeshanensis in the Dabie Mountains is endemic to the Dabie Mountains, with the largest population distributed in Dawanggou, Yuexi County, Anhui Province. Spatial series instead of time were used to analyze the population structure, the population specific timetable was drawn, the mortality rate curve and the disappearance rate curve were drawn, and the survival analysis of the population was carried out with four survival functions. At the same time, with the spectral analysis method, Dynamic changes in populations. The results showed that the population of Pinus tabulaeformis population in the Dabie Mountains was small and the structure was volatile. Individuals in the seedling stage are more abundant, with fewer individuals in the young tree stage, and the population tends to decline. The trend of population mortality and disappearance rate was basically the same, and the peak appeared at the 5th grade. The four survival curves show that the Dabieshan Aconitum has the characteristics of rapid decrease, medium-term stability and late decline. Spectral analysis showed that the dynamic of Pinus tabulaeformis population in Dabieshan was significantly affected by the fundamental wave but also with small periodic fluctuations. The periodic fluctuations at harmonics A3 and A4 were related to individual growth.