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Journal of Forestry Research

, Volume 20, Issue 4, pp 367–371 | Cite as

Seasonal changes of soil respiration in Betula platyphylla forest in Changbai Mountain, China

  • Ying Liu
  • Shi-jie HanEmail author
  • Lu Lin
Research Paper

Abstract

A stdudy was conducted to determine the seasonal changes of soil respiration and the contribution of root respiration to soil respiration in Betula platyphylla forest in Changbai Mountain from May to September in 2004. Results indicated that the total soil respiration, root-severed soil respiration and the root respiration followed a similar seasonal trend, with a high rate in summer due to wet and high temperature and a low rate in spring and autumn due to lower temperature. The mean rates of total soil respiration, root-severed soil respiration and root respiration were 4.44, 2.30 and 2.14 µmol·m−2·s−1, respectively during the growing season, and they were all exponentially correlated with temperature. Soil respiration rate had a linear correlation with soil volumetric moisture. The Q10 values for total soil respiration, root-severed soil respiration and root respiration were 2.82, 2.59 and 3.16, respectively. The contribution rate of root respiration to the total soil respiration was between 29.3% and 58.7% during the growing season, indicating that root is a major component of soil respiration. The annual mean rates of total soil respiration, root-severed soil respiration and root respiration were 1.96, 1.08, and 0.87 µmol·m−2·s−1, or 741.73, 408.71, and 329.24 g·m−2·a−1, respectively. Root respiration contributed 44.4% to the annual total soil respiration. The relationship proposed for soil respiration with soil temperature was useful for understanding and predicting potential changes in Changbai Mountain B. platyphylla forest ecosystem in response to forest management and climate change.

Keywords

root respiration seasonal variations soil respiration soil temperature soil water content 

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Copyright information

© Northeast Forestry University and Springer Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.State Key Laboratory of Pulp and Paper Engineering, College of Light Industry and Food SciencesSouth China University of TechnologyGuangzhouP. R. China
  2. 2.Institute of Applied EcologyChinese Academy of SciencesShenyangP. R. China

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