格氏栲种群数量动态的谱分析研究

Study on Spectral Analysis of Dynamics in Castanopsis Kawakamii Population

运用谱分析数学方法,研究分析格氏栲林格氏栲种群动态规律。结果表明:格氏栲种群数量动态的周期波动性是明显的,与格氏栲天然更新过程有关;不同生境、人为干扰均对格氏栲种群数量动态的波动产生影响;格氏栲生长量的周期波动与其种群数量动态的周期波动特征基本一致,表明格氏栲种群数量动态呈周期波浪式发展,即表征格氏栲林优势种群的稳定性。

Using the spectral analysis method, this paper studies the dominant species population dynamics in Castanopsis kawakamii forest. The results show that there is a marked regularity of periodic fluctuation in the process of quantitative dynamics of C. kawakamii population, which is related to natural regeneration of C. kawakamii, and that different habits and human disturbance have affected the population's fluctuation. It is discovered that the periodic fluctuation of annual growth of C. kawakamii is coincident with that of population dynamics process. It is shown that population dynamics of C. kawakamii proceeds in the way of periodic wave, which indicates dominant population's stability in C. kawakamii population.