Delta13C characteristics of soil organic carbon in hilly karst area

• Autorzy: Li Q. , Li Z. , Liang J. , He Y. , Cao J. , Hu Q.
• Języki publikacji: EN

Abstrakty

EN

To understand the effects of geomorphology and environment on the 13C character of soil organic carbon (SOC) in a hilly karst area, 26 soil samples were collected in 2008 in Nanchuan, Chongqing, SW China. The results showed that the δ13C-SOC values were between -18.66‰~-27.41‰, with the mean value of -23.3‰. The data firmly indicated that the modern soil organic carbon was the mixture of C3 and C4 plants and mainly originated from C3 plants rather than C4 plants. According to the sequence of δ13C-SOC along the geomorphological change at this hilly karst area, it can be seen that the δ13C-SOC values was the crest > brae > foot. Based on the results of correlation analysis, the positive correlation between the δ13C-SOC values and their altitude is 0.432 (p=0.028), which reflects the land/soil degradation effects caused by the hilly geomorphology, especially in the water and soil erosion process.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2014
• Tom: 23
• Numer: 6
• Opis fizyczny: p.2345-2349,fig.,ref.

Twórcy

autor

Li Q.

• Karst Dynamics Laboratory, MLRandGuangxi, Institute of Karst Geology, CAGS, Guilin 541004, P.R. China
• School of Geographical Sciences, Southwest University, Chongqing 400715, P.R. China

autor

Li Z.

• Agricultural Resource and Environmental Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, P.R. China

autor

Liang J.

• Karst Dynamics Laboratory, MLRandGuangxi, Institute of Karst Geology, CAGS, Guilin 541004, P.R. China

autor

He Y.

• Karst Dynamics Laboratory, MLRandGuangxi, Institute of Karst Geology, CAGS, Guilin 541004, P.R. China

autor

Cao J.

• Karst Dynamics Laboratory, MLRandGuangxi, Institute of Karst Geology, CAGS, Guilin 541004, P.R. China

autor

Hu Q.

• Karst Dynamics Laboratory, MLRandGuangxi, Institute of Karst Geology, CAGS, Guilin 541004, P.R. China
• Guangxi University, Nanning 530004, P.R. China

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