| 长苞铁杉种群空间格局的分形特征 |
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| 引用本文： | 吴承祯,洪滔,宋萍,范海兰,游爱华.长苞铁杉种群空间格局的分形特征[J].福建林学院学报,2008,28(1):1-5. |
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| 作者姓名： | 吴承祯 洪滔 宋萍 范海兰 游爱华 |
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| 作者单位： | 福建农林大学林学院,福建,福州,350002;福建省高校森林生态系统过程与经营重点实验室,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金，福建省自然科学基金 |
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| 摘 要： | 种群格局关联维数是种群个体空间关联尺度变化规律的反映,表明了种群个体的空间相关程度。采用关联维数对福建省天宝岩国家级自然保护区珍稀濒危植物长苞铁杉种群格局的分形特征进行了研究。结果表明,不同样地长苞铁杉种群个体空间关联的无标度区介于1-32 m,种群格局关联维数值1.032 4-1.580 1,不同样地种群关联维数的大小为Q5>Q1>Q2>Q4>Q6>Q3,从而揭示出长苞铁杉在不同样地中个体空间关联尺度变化的差异。
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| 关 键 词： | 珍稀濒危植物 长苞铁杉 种群格局 关联维数 |
| 文章编号： | 1001-389X(2008)01-0001-05 |
| 修稿时间： | 2007年8月20日 |
Fractal characteristics of spatial pattern of Tsuga longibracteata population |
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| WU Cheng-zhen,HONG Tao,SONG Ping,FAN Hai-lan,YOU Ai-hua.Fractal characteristics of spatial pattern of Tsuga longibracteata population[J].Journal of Fujian College of Forestry,2008,28(1):1-5. |
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| Authors: | WU Cheng-zhen HONG Tao SONG Ping FAN Hai-lan YOU Ai-hua |
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| Abstract: | Correlation dimension of population pattern could reflect not only the scaling variation properties of spatial correlation of individuals,but also the spatial occupation degree of population.The fractal characteristics of the spatial distribution pattern of the endangered and rare Tsuga longibracteata Cheng population in different plots in Tianbaoyan National Nature Reserve of Fujian was analyzed and compared,by applying correlation dimension.The results indicated that the scaling ranges of spatial correlation of individuals of T.longibracteata population in different plots were from 1 to 32 m.The value of correlation dimension of pattern of T.longibracteata population ranged from 1.032 4 to 1.580 1 and the order was Q5>Q1>Q2>Q4>Q6>Q3.It disclosed the scaling variation difference of individual spatial correlation of T.longibracteata population in different plots. |
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| Keywords: | endangered and rare plant Tsuga longibracteata population pattern correlation dimension |
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