Spatial Pattern Analysis of Dominant Tree Species in the Prim Bamboo-faxon Fir Forest in Sub-alpine Area in Western Sichuan,China

doi:10.13466/j.cnki.lyzygl.2014.06.019

Abstract

Abstract: Bamboo-faxon fir forest is one of the most important dark coniferous forests in western Sichuan province,China.The spatial patterns and associations of dominant tree species in the forest were researched to offer references for restoration and conservation of the dark coniferous forests.Using Ripley’s univariate L(t)and bivariate L₁₂(t) functions,we analyzed the spatial patterns and inter-specific associations of three dominant tree species in a 40 m×40 m primeval bamboo-faxon fir forest plot in sub-alpine area of western Sichuan,China.The results showed that stratification of the vertical structure of the plant community was obvious.There were three dominant tree species which Abies faxoniana,Betula albosinensis and Picea asperata.L(t).Function analysis showed the spatial patterns of three dominant tree species were changed with scales.A.faxoniana was significantly aggregated at 0~11 m scale,while randomly distributed at 11~20 m scale.B.albosinensiswas significantly aggregated at 0~14 m scale,while randomly distributed at 14~20 m scale.P.asperata clumped and was distributed at 0~20 m scale.From the analysis of L₁₂(t)function,the results showed three dominant tree species were significantly independent with each other at the scales of 0~20 m,indicating that those species had little influence on each other.

Key words: bamboo-faxon fir forest, spatial pattern, spatial association, dominant tree species, point pattern analysis, sub-alpine area of western Sichuan

CLC Number:

S718.5

LIU Wenjing, XU Yu, WANG Langjie, MIAO Ning. Spatial Pattern Analysis of Dominant Tree Species in the Prim Bamboo-faxon Fir Forest in Sub-alpine Area in Western Sichuan,China[J]. FOREST RESOURCES WANAGEMENT, 2014, (6): 85-90.

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