LI Bo,LIU He-xia.Spatial Pattern Analysis of Individuals in Different Age Classes of Liriodendron chinensis Sarg in Maoer Mountain Reserve[J].Northern Horticulture,2013,37(21):81-85.
猫儿山鹅掌楸种群不同龄级立木的点格局分析
- Title:
- Spatial Pattern Analysis of Individuals in Different Age Classes of Liriodendron chinensis Sarg in Maoer Mountain Reserve
- 文章编号:
- 1001-0009(2013)21-0081-05
- 分类号:
- S 792.21
- 文献标志码:
- A
- 摘要:
- 以广西猫儿山大竹坪鹅掌楸天然林样地（360 m×180 m）为研究群体，应用O-ring函数对鹅掌楸天然种群不同龄级的空间分布格局及龄级间的关系进行分析。结果表明：该鹅掌楸种群龄级结构表现为金字塔型，属于稳定发展种群。小尺度空间范围内，该群体的空间分布格局表现为聚集分布；在24~48 m的中尺度空间范围内，该群体则表现为随机分布；而在49~88 m的空间范围时，该群体的空间分布格局趋于均匀分布；当空间尺度大于88 m后，又表现为随机分布。鹅掌楸不同龄级立木的空间分布格局存在差别。鹅掌楸成年群体及幼树群体在小尺度空间范围内表现为聚集分布，在中尺度及大尺度空间范围内表现为随机分布；鹅掌楸龄级老年群体在不同的空间尺度下均表现为随机分布；鹅掌楸不同龄级立木之间主要表现为小尺度上的正关联及在较大尺度上的不关联。
- Abstract:
- Taking the spatial distribution pattern of Liriodendron chinensis Sarg (360 m×180 m) for the natural population in Maoershan Reserve as research group.The spatial distribution pattern in this natural population of L.chinense was investigated in the application of O-ring function.The results showed that age class structure of L.chinense in the isolated population was characterized by the pyramid，indicating that the population was in an incremental status.The distribution pattern of this population was closely related to the spatial scale，with an aggregation distribution in less than 24 m，a random distribution in 24~48 m spatial scale，a hypodispersion distribution in 49~88 m spatial scale and a random distribution in larger than 88 m.The fine-scale spatial distribution pattern was obvious differences among growth stages in this natural population.Both the adult and young individuals showed aggregation distribution at smaller spatial scale，and random distribution at other spatial scale.Whereas，for those aging individuals，only one pattern of random distribution was identified at all spatial scales.The spatial correlation among development stages were positive at smaller scale，while at larger scale，no close association was identified．
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备注/Memo
第一作者简介：李博（1981-），男，广西北流人，博士研究生，讲师，研究方向为林木遗传育种。E-mail:shaojianbo@yahoo.com.cn.