| 摘要 | 应用离散富里叶变换研究井冈山天然大果马蹄荷( Exbucklandia tonkinensis Steenis) 的种群动态规律, 结果表明:大果马蹄荷种群动态存在着周期波动规律, 大周期为 140 年, 中周期 70 年, 小周期 28 ～ 35 年, 与大果马蹄荷个体生长的周期波动一致。 天然大果马蹄荷的世代划分以 70 年为宜, 人工林以 25 年为宜。该研究结果可为天然林的管理和持续利用提供科学依据。
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| Abstract | The population analysis of natural Exbucklandia tonkinensis Steenis of Jingg ang Mountain
by Fourier Translation show ed that there is a marked regularity of periodic fluctuatio ns in the process of natural regeneration as follow s :the long periodic fluctuation is 140 years, the middle one is 70 years and the sho rt one is 28 ～ 35 years .It is discovered that the periodic fluctuation of the annual growth of individual tree is coincident w ith the natural regeneration process .How ever, it also indicated that the generation of E xbucklandia tonkinensis Steenis is 70 years in natural comm unity and 25 y ears in cultured community acco rding to the analyses above .It w ill be effective for sustainable utilization and management of natural forests from the result .
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