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Bulletin of Botanical Research ›› 2013, Vol. 33 ›› Issue (1): 24-30.doi: 10.7525/j.issn.1673-5102.2013.01.005

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Spatial Pattern Analysis of Individuals in Different Age-classes of Pinus bungeana in Wulu Mountain Reserve,Shanxi,China

YANG Xiao-Feng;MIAO Yan-Ming;ZHANG Qin-Di;ZHANG Ling;BI Run-Cheng*   

  1. College of Life Science, Shanxi Normal University, Linfen 041000
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-01-20 Published:2013-01-20
  • Contact: BI Run-Cheng
  • Supported by:

Abstract: Pinus bungeana is an important protective plant. Spatial pattern analysis of individuals in different age-classes of P.bungeana was conducted in the present study. Here we employed the technique of point pattern analysis which can analyze patterns under all scale along a gradient. The results showed: The densities of six age-classes were more different, and age-classes 2~5 had more individuals than the other two age-classes. The individuals of all age-classes were not clumping distributed in space, however their distribution pattern trended to random distribution varied with the change of scale. The co-relationship between age-class 1 and age-class 2 was significantly positive, this significantly positive correlation is beneficial for the development of the group. In the smaller scale, the individuals of different age-classes were a stronger spatial association. When the scale was larger, their spatial association would be weakened greatly. This showed the spatial patterns of different age-classes individuals and the spatial association between the individuals had a close relationship with the spatial scale.

Key words: population pattern, Pinus bungeana forest, point pattern analysis, age-class

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