当前位置: 首页 > 文章 > 武夷山香果树种群格局的分形特征——信息维数 浙江林业科技 2010,30 (2) 31-35
Position: Home > Articles > Fractal Properties of Spatial Distribution of Emmenopterys henryi Population in Wuyi Mountain by Information Dimension Journal of Zhejiang Forestry Science and Technology 2010,30 (2) 31-35

武夷山香果树种群格局的分形特征——信息维数

作  者:
徐卫红;王艾平;章志琴
单  位:
上饶师范学院
关键词:
香果树;分布格局;信息维数
摘  要:
采用信息维数对武夷山香果树(Emmenopterys henryi)种群进行空间分布格局的分形特征分析,结果表明:香果树种群信息维数值在1.0~1.7,香果树在各种群落中信息维数呈极显著线形相关(P<0.01);不同群落类型的香果树种群间分形特征差异明显,而同一类型内部各样地间差异较小;香果树种群信息维数由高到低依次为:香果树纯林>阔叶林>毛竹林>针阔混交林;香果树信息维数随海拔高度的变化波动幅度较大,香果树在海拔1 300 m左右,信息维数达最大值,格局尺度变化强烈,是香果树种群生存较理想的环境,海拔高于1 400 m或低于1 200 m信息维数较低,种群更新较差。提出了加强保护有结实能力的香果树母树,以促进其自然更新的建议。
译  名:
Fractal Properties of Spatial Distribution of Emmenopterys henryi Population in Wuyi Mountain by Information Dimension
作  者:
XU Wei-hong,WANG Ai-ping,ZHANG Zhi-qin(Shangrao Normal University,Shangrao 334001,China)
关键词:
Emmenopterys henryi;distribution pattern;information dimension
摘  要:
Based on the investigation in Wuyishan Nature Reserve,Fujian province,fractal properties of spatial distribution of Emmenopterys henryi population were analyzed by information dimension.The results showed that information-counting dimension of E.henryi population ranged from 1.03 to 1.7,indicating weak ability to expand.Fractal properties had significant difference among different population types,but small among the same communities.Information-counting dimension was as follows: pure stand of E.henryi> broadleaved forest>moso bamboo forest>broad leaved-coniferous mixed forest,and had a trend of increase to decrease with the increase of altitude.Information dimension decreased with the age.Proposition was offered to conserve mother trees for promoting natural regeneration.

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