The Seasonal Variation of Soil CO2 Concentration in Epikarst in the Panlong Cave , Guilin
详细信息
- 责任者：Li Tao (Karst Dynamics Laboratory ; Institute of Karst Geology ; CAGS ; Guilin 541004 ; China) ; Cao Jianhua
- 刊名：Carsologica Sinica
- 出版年：2011
- 卷期：30(3)
- 关键词：岩溶地貌 ; karst features ; 土壤 ; soils ; 二氧化碳 ; carbon dioxide ; 广西 ; Guangxi
- 页码：p.348-353
- 图表：9 illus., 20 refs.
- 分类号：1400
- 出版序号：1932
- issnNo：ISSN1001-4810
- isbnNo：CN45-1157/P
摘要
///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; 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 1 000 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.
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