栓皮栎种群数量动态的谱分析与稳定性

1　前　言波动可出现于所有的植被中 ,而谱分析的方法可以揭示种群数量变动的周期性波动。Ｖｅｂｌｅｎ等通过老龄林结构和动态分析认为 :优势种的更替是周期循环的 ,而不是一个连续发展过程2 ]。谱分析方法在昆虫数量动态研究中应用较多1 ],在植物生态学研究中也有数例应用 ,伍业钢等2 ]首次将之应用于阔叶红松林的演替与天然更新过程的研究 ,认为红松天然更新过程的周期波浪式发展 ,是其稳定的一个特点。但对于林木年龄较小、增长特征较明显的种群 ,谱分析方法是否适用 ,其结果与种群稳定性的关系如何 ,则尚未见报道。本文以河南省分布…

Spectral Analysis of Dynamics and Stability of Quercus variabilis Population

Using the spectral analysis method, this paper studied the young Quercus variabilis population that had obvious increase characteristics, and analyzed the population's stability under disturbance. The result shows that Q.variabilis population has 20-47 year periodic fluctuations under the basic one, which is related to its regeneration and therefore can maintain its stability itself. But the internal periodic length of the basic one cannot be distinguished because the tree's age is not old enough. The results also shows that human disturbance have affected the population's fluctuation.