| 沙地云杉种群增长预测模型研究 |
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| 引用本文： | 郑元润,徐文铎.沙地云杉种群增长预测模型研究[J].植物生态学报,1997,21(2):130-137. |
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| 作者姓名： | 郑元润 徐文铎 |
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| 作者单位： | 中国科学院植物研究所，中国科学院沈阳应用生态研究所 |
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| 摘 要： | 本文以沙地云杉种群的静态生命表、生殖力表为基础，运用Leslie种群增长模型，预测了小腾格里沙地白音敖包地区有代表性的藓类云杉林中云杉种群的动态增长过程，揭示了沙地云杉各龄级植株的动态规律。结果表明：沙地云杉为缓慢增长型种群；种群的净增殖率、内禀增长率及周限增长率较高，而种群的世代周期及加倍时间偏低；在50年内种群1年生幼苗的数量及种群的总数量表现出持续递增的趋势，且种群总数目的变化幅度较小。
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| 关 键 词： | 沙地云杉 种群 预测模型 |
MODEL FORECAST OF POPULATION DYNAMICS OF SPRUCE ON SANDY LAND |
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| Zheng Yuanrun,Zhang Xinshi and Xu Wenduo.MODEL FORECAST OF POPULATION DYNAMICS OF SPRUCE ON SANDY LAND[J].Acta Phytoecologica Sinica,1997,21(2):130-137. |
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| Authors: | Zheng Yuanrun Zhang Xinshi and Xu Wenduo |
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| Abstract: | Based on the static life table , fecundity schedule of Picea mongolica population, the dynamic process of the spruce population, which is representative in Baiyinaobao, Xiaotengeli sandy lands, Inner Mongolia, was predicted using Leslie population model. The dynamics of plants of each age class was expounded. The spruce population on the sandy land was of low increase type. Its net reproductive rate, the intrinsic rate of increase and the increment rate per unit were high, but its generation span and the time of double population size were low. The number of one-year-old plants and total number of plants increased continually, and the change of total number of plants was small in 50 years. |
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| Keywords: | Picea mongolia Population dynamics Model forecast |
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