• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 22 Issue 4
Aug.  2009
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Article Contents
LIU Yuanyue, JIANG Hong, QIU Zhongping, YUAN Huanying, LI Yahong. Soil Respiration of Three Typical Subtropical Forest Ecosystems in Tianmu Mountain of China[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 590-594.
Citation: LIU Yuanyue, JIANG Hong, QIU Zhongping, YUAN Huanying, LI Yahong. Soil Respiration of Three Typical Subtropical Forest Ecosystems in Tianmu Mountain of China[J]. Journal of Southwest Jiaotong University, 2009, 22(4): 590-594.

Soil Respiration of Three Typical Subtropical Forest Ecosystems in Tianmu Mountain of China

  • Received Date: 05 Jan 2009
  • The soil respiration(SR) of three typical forest ecosystems,which were Chinese fir,broadleaf evergreen and Phyllostachys pubescens,were measured by the infrared system(LI-8100) in situ in West Tianmu Mountain of Chinese subtropical area,to study the relationship between the fluxes of CO2 released from this soil carbon pool and the change of the regional climatic environment.The results indicated that the diurnal soil respiration in the three stands almost varied in a single-peaked pattern.Among the three stands,the annual average CO2 efflux rate of Phyllostachys pubscens(3.82 μmo l/(m2·s)) was the greatest,that of broadleaf evergreen(2.23 μmo l/(m2·s))was the lowest,and that of Chinese fir(2.35 μmo l/(m2·s))was in between them.Generally,soil respiration rate increased with soil temperature.In summer(August),the CO2 effluxes of the three stands rose to the maximum,but dropped greatly in winter(November).Soil moisture was in a negative linear correlation with SR,and together with soil temperature,had mutual effects on SR.In conclusion,the environmental factors interacted with each other and influenced the process of SR.

     

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