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应用生态学报 ›› 1999, Vol. 10 ›› Issue (5): 518-520.

• 研究论文 • 上一篇    下一篇

三峡库区次生柏木林中物种分布格局的分形特征

邓红兵1, 周永斌1, 王庆礼1, 潘文斌2   

  1. 1. 中国科学院沈阳应用生态研究所, 沈阳110015;
    2. 中国科学院水生生物研究所, 武汉430072
  • 收稿日期:1998-11-18 修回日期:1999-03-25 出版日期:1999-09-25 发布日期:1999-09-25
  • 通讯作者: 邓红兵,男,28岁,博士,主要从事植被生态、流城生态及生态模型研究,发表论文6篇.E-mail:lmdai@iae.syb.ac.cn E-mail:lmdai@iae.syb.ac.cn
  • 基金资助:

    国家“九五”科技攻关资助项目(962920204212).

Fractal characteristics of distribution pattern of plant species in secondary Cupressus funebris forest in the Three Gorges region

Deng Hongbing1, Zhou Yongbin1, Wang Qingli1, Pan Wenbin2   

  1. 1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015;
    2. Institute of Hydrobiology, Academia Sinica, Wuhan 430072
  • Received:1998-11-18 Revised:1999-03-25 Online:1999-09-25 Published:1999-09-25

摘要: 应用非线性科学中的分形几何理论,以三峡库区一移民安置示范区次生柏木林为对象,研究该群落中物种在中、小尺度上水平分布格局的分形特征,主要应用计盒维数计算群落中一些重要物种分布格局的分维值,如柏木为1.588,地枇杷为1.617,莎草为1.627.得到的结果与用经典群落分析方法所得结果相符,表明分维计算在本研究中是一种有效的手段;对一些物种分布分维值的进一步分析还能说明人类活动对物种分布格局或空间占有程度的影响.

关键词: 次生柏木林, 格局, 分形, 计盒维数, 氮利用率, 氮流动特征, 农场水平, 农牧结合, 华北平原

Abstract: Based on the fractal geometrical theories in nonlinear science, the fractal characteristics of distribution patterns of some major plant species in the secondary Cupressus funebris forest in the Three Gorges region were studied at middle and small scales. The box dimensions of distribution patterns of some important species were calculated. For example, the dimensions of Cupressus funebris, Ficus tikoua, and Cyperus spp. were 1.588, 1.617 and 1.627, respectively. The results tallied with those coming from classic analysis, which showed that fractal dimension is a valuable measure in this research. Further analysis of the dimensions could also illustrate the influence of human activities on species distribution patterns.

Key words: Secondary Cupressus funebris forest, Pattern, Fractal, Box dimension, mixed crop-livestock system, nitrogen flow characteristic, nitrogen use efficiency, North China Plain, farm level