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兴安落叶松自然更新格局和种群的生态对策
A STUDY ON THE PATTERNS OF NATURAL REGENERATION AND ECOLOGICAL STRATEGY OF DHURIANLARCH POPULATION
【摘要】 本文在调查兴安落叶松自然更新种群的基础上,运用数学生态学关于种群个体空间配置的理论模型进行更新格局的研究,进而分析其种群生态对策的机制.根据2×2m ̄2样方水平的观测资料,统计推断其自然更新的理论格局为负二顶分布。分析结果表明,兴安落叶松以r型繁殖方式和聚集型更新格局的生态对策,做为种群繁衍、生存和发展的最佳抉择。
【Abstract】 The spatial patterns of natural regeneration and ecologicalstrategy of Larix gmelini have been studied in this paper,The regenera-tive situation is that forestry area abounds with seeds of Larix gmelini。Here is a steady state of natural regeneration.On the basis of investig-ative date of l800 samples in 2×2m ̄2 level, the statistical resuIts showthat the regenerative pattern of Larix gmelini population is aggregative,and Negative Binomial Distribution is accepted as the theoretical pat-tern。Scattering great quantity of seeds and displaying an aggregative typeof regenerative pattern over forestry area are ecological strategy ofLarix gmelini populatin, in order for the propagation and existence ofits population。
【Key words】 Dahurian larch population; Natural regeneration; Mathematical models; Ecological strategy;
- 【文献出处】 内蒙古林学院学报 ,JOURNAL OF NEIMENGGU FORESTRY COLLEGE , 编辑部邮箱 ,1994年01期
- 【分类号】S791.222.0
- 【被引频次】18
- 【下载频次】151