摘要 | 通过静态生命表分析赤松( Pinus densiflora Sieb.e t Zucc.) 种群的生命结构与数量动态。 结果表明, 赤松种群具有不同年龄等级结构, 死亡高峰出现在 5 ~ 15 年, 此时正是幼龄期向成年期的过渡阶段, 度过此阶段的赤松个体大多能达到生理寿命。 由此看出, 赤松种群静态生命表能较精确地反映赤松种群的数量动态规律。 |
Abstract | By using the static life table, the life structure and quantitative dynamics of Pinus densiflora Sieb . et Zucc. population in Shandong Province were analysed. The results indicated that P . densiflora population has different age-grade structure, and that mortality summit of the species population appears during the time from age 5 to age 15— from its young period through grown-up period, and the individuals pulling through this period can almost attain their physiological life-span. So the static life table can reflect accurately the regularity of the quantitative dynamics of Pinus densiflora population. |
关键词 | 赤松; 种群; 静态生命表; 数量动态 |
Key words | Pinus densiflora Sieb .et Zucc.; population; static life table; quantitative dy namics |
作者 | 张 伟 ,赵善伦 |
所在单位 | 山东师范大学人口·资源与环境学院, 济南 250014 |
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下载次数 | 923 |
基金项目 | 山东省教委资助项目“山东赤松种群生态学研究”( 项目编号:96H02) |