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Volume 34 Issue 6
Dec.  2015
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Article Navigation >  CARSOLOGICA SINICA  > 2015  >  34(6): 539-542
ZHANG Ying, LI Qiang. Is it karst carbon sink or karst carbon flux?[J]. CARSOLOGICA SINICA, 2015, 34(6): 539-542. doi: 10.11932/karst20150601
Citation: ZHANG Ying, LI Qiang. Is it karst carbon sink or karst carbon flux?[J]. CARSOLOGICA SINICA, 2015, 34(6): 539-542. doi: 10.11932/karst20150601
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Is it karst carbon sink or karst carbon flux?

doi: 10.11932/karst20150601

  • Key Laboratory of Karst Dynamics, MLR & GZAR/Institute of Karst Geology, CAGS

  • Publish Date: 2015-12-25
    Abstract
  • Imbalanced atmospheric carbon flow has been a critical problem in the study of global carbon cycle since the 1970s, which has attracted a lot of attentions from policy makers and scientists. After investigating the global carbon budgets, it is cognized that the assessed carbon sink has tended to increase globally in the past 50 years, which largely take place in terrestrial and oceanic ecosystems. In a karst process (CaMg(CO3)2 + 2CO2 + 2H2O?Ca2++ Mg2++4HCO3-), the HCO3-which connects the lithosphere, hydrosphere and atmosphere becomes a part of the carbon pool of the terrestrial ecosystem and ocean. Recent research proved that global karst carbon flux is around 8×108 tons per annum. Because of the complexity of carbon cycles in the karst process, there are many difficulties to confirm the existence of karst carbon sink, or to determine the location and causes of karst carbon sink. Therefore, it is suggested to use the correct depiction for the study of karst carbon cycle and its geological function, which may contribute to karst dynamic theory.

     

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