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GEOGRAPHICAL RESEARCH >

2011 , Vol. 30 >Issue 3: 531 - 539

DOI: https://doi.org/10.11821/yj2011030014

Earth Surface Processes

Population dynamics of Betula ermanii associated with soil change on treeline of northern slope of Changbai Mountains

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  • College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, China

Received date: 2010-04-04

  Revised date: 2010-09-10

  Online published: 2011-03-20

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Abstract

This paper, taking the treeline of northern slope of Changbai Mountains as the research object, selected 4 plots (83 quadrats) to study diameter-class structure of Betula ermanii population and soil physical and chemical properties. Four indices of soil properties (SOM, TN, AN and gravel contents) and diameter-class structure of two life forms (shrub and single-trunk) were analyzed by ANOVA, correlation analysis and other statistical analysis. The relationships between population dynamics and soil change were investigated by correlation analyses. The results showed soil physical and chemical properties on different quadrats had obvious difference with different expansion of Betula ermanii population. Soil factor had a certain restrictive effect on population dynamics. However, soil factor did not play a crucial role in treeline shifts and population expansion. The gradual weakening of soil properties has an effect on treeline shifts with the passage of time. The Betula ermanii population tended to continuously adjust its life forms to adapt air temperature change in order to overcome soil restrictions.

Key words： northern slope of Changbai Mountains; treeline change; Betula ermanii; population expansion; soil properties

Cite this article

WANG Xiao-dong, LIU Hui-qing . Population dynamics of Betula ermanii associated with soil change on treeline of northern slope of Changbai Mountains[J]. GEOGRAPHICAL RESEARCH, 2011 , 30(3) : 531 -539 . DOI: 10.11821/yj2011030014

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