| 磨盘山次生林紫椴种群空间结构研究 |
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| 引用本文： | 邱知,金川,于世勇. 磨盘山次生林紫椴种群空间结构研究[J]. 林业资源管理, 2012, 0(4): 62-65 |
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| 作者姓名： | 邱知 金川 于世勇 |
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| 作者单位： | 国家林业局调查规划设计院,北京,100714 |
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| 摘 要： | 2011年,在吉林市磨盘山次生林建立了1hm2的永久样地,调查了样地内胸径(DBH≧1cm)的所有紫椴个体。该样地共有紫椴653株,平均胸径6.39cm。运用Ripley’s K函数分析了紫椴种群的空间分布格局。结果表明:1)所有紫椴个体以及紫椴幼树(DBH<10cm)、紫椴小树(10cm≤DBH<20cm)在空间上呈聚集分布格局,紫椴大树(DBH≥20cm)在空间上随机分布;2)不同发育阶段紫椴个体在空间上呈负关联关系。次生林紫椴的空间格局与紫椴的更新策略和种子传播有关。
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| 关 键 词： | 磨盘山 紫椴 Ripley’sK 空间格局 空间关联 |
Study on Spatial Structure of Tilia mandshurica in Secondary Forest in Mopan Mountains |
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| QIU Zhi , JIN Chuan , YU Shiyong. Study on Spatial Structure of Tilia mandshurica in Secondary Forest in Mopan Mountains[J]. Forest Resources Management, 2012, 0(4): 62-65 |
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| Authors: | QIU Zhi JIN Chuan YU Shiyong |
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| Affiliation: | (Academy of Forest Inventory and Planning,State Forestry Administration,Beijing 100714,China) |
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| Abstract: | Based on investigation data from a permanent secondary forest plot of 1ha in Mopan Mountains,Jilin city,the structure of Tilia mandshurica population was analyzed.Ripley’s K function was used to analyze spatial patterns of T.mandshurica population at different growth stages(saplings,small trees and big trees).The results showed that DBH structure of T.mandshurica presented a reverse "J" distribution and small age individuals accounted more.The spatial pattern of T.mandshurica population was clump for all stems,saplings and small trees,but random for big trees;spatial associations between different stages were repulsed.It indicates that seed dispersal and regeneration mechanism was a key factor to spatial pattern. |
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| Keywords: | Mopan Mountains Tilia mandshurica Ripley’s K spatial pattern spatial association |
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