Spatial Distribution and Spatial Associations of the Dominant Species of Picea schrenkiana.var tianschanica Forest in Xingjiang

Abstract

Abstract: Research plot was established in the Picea schrenkiana.var tianschanica forest in Xingjiang,northwest China.The spatial distribution patterns of dominant species of trees,shrub layers and spatial associations between Picea schrenkiana.var tianschanica and understory Lonicera caerulea were analyzed and explored.The results showed that the distribution of DBH of Picea schrenkiana.var tianschanica showed reverse “J” pattern.There were large differences involving spatial distribution among DBH classes.The Lonicera caerulea was almost randomly distributed across all studied scales except for the small scale(1-36 m).There was a positive correlation between Picea schrenkiana.var tianschanica and Lonicera caerulea at scales of 1-28 m.There was no obvious competition between overstorey and understorey and these two layers presented symbiosis or associated.There were no clear spatial associations among tree growth stages of Picea schrenkiana.var tianschanica except for the sapling and small trees.The changes of forest microclimate induced by tourists and grazing can possibly contribute to the increase of wind disturbance.

Key words: Picea schrenkiana.var tianschanica , spatial distribution, spatial associations, West Tianshan in Xingjiang

CLC Number:

S718.54

BAIKETUERHAN YE erjiang, ZHANG Chunyu, ZHAO Xiuhai. Spatial Distribution and Spatial Associations of the Dominant Species of Picea schrenkiana.var tianschanica Forest in Xingjiang[J]. FOREST RESOURCES WANAGEMENT, 2013, (3): 58-62.

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