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Volume 30 Issue 3
Sep.  2011
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Article Navigation >  CARSOLOGICA SINICA  > 2011  >  30(3): 348-353
LI Tao, CAO Jian-hua, ZHANG Mei-liang, HUANG Yan-mei, CHEN Jia-rui, YAN Yi-ping, LI Guang-chao, ZHU Xiao-yan. The seasonal variation of soil CO2 concentration in epikarst in the Panlong Cave, Guilin[J]. CARSOLOGICA SINICA, 2011, 30(3): 348-353. doi: 10.3969/j.issn.1001-4810.2011.03.018
Citation: LI Tao, CAO Jian-hua, ZHANG Mei-liang, HUANG Yan-mei, CHEN Jia-rui, YAN Yi-ping, LI Guang-chao, ZHU Xiao-yan. The seasonal variation of soil CO2 concentration in epikarst in the Panlong Cave, Guilin[J]. CARSOLOGICA SINICA, 2011, 30(3): 348-353. doi: 10.3969/j.issn.1001-4810.2011.03.018
shu

The seasonal variation of soil CO2 concentration in epikarst in the Panlong Cave, Guilin

doi: 10.3969/j.issn.1001-4810.2011.03.018
  • 1.

    Karst Dynamics Laboratory, Institute of Karst Geology, CAGS；The College of Life Science, Guangxi Normal University；Honghe Tropical Agriculture Research Institute of Yunnan

  • 2.

    Karst Dynamics Laboratory, Institute of Karst Geology, CAGS

  • 3.

    Karst Dynamics Laboratory, Institute of Karst Geology, CAGS；The College of Life Science, Guangxi Normal University

  • Received Date: 2011-03-21
  • Publish Date: 2011-09-25
    Abstract
  • Taking the Panlong Cave karst experimental site in Guilin as a case, long-term survey on soil CO2 concentration variations at regular intervals is done in two sample plots depression bottom and slope. The result shows that:(1) The soil CO2 concentration varies seasonally obviously. In the summer (May to August), the soil CO2 concentration is two or three times higher than that in the other periods. And it is closely related with temperature, precipitation and biological activities; (2)The soil CO2 concentration at the depression bottom is higher than that on the slope, especially in the summer, the soil CO2 concentration at the depression bottom nearly 1000 mg/m2 higher than on the slope; (3)In the vertical profile, the soil CO2 concentration increases with depth in most cases, but the CO2 concentration both on the slope(-50 cm and -80 cm)or at the depression bottom(-80 cm and -100 cm)reduce with soil depth during the rainy season, which make the soil CO2 concentration to increase with the depth at the top and decrease at the bottom of the vertical profile.

     

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