E3 Journal of Scientific Research
E3 Journal of Scientific Research Vol. 2 (2) pp. 035-038, August 2014; © E3 Journals; ISSN 2276-9919
The changing process of Carbon Dioxide under the conditions of different lithologies in Chaotian river basin
Liang Li1,2,3 * , Jianhua Cao3 , Yudao Chen21 Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, Jiangan Road 12#,Guilin, Guangxi, China. 541004
2 Institute of Karst Geology, Chinese Academy of Geological Science, Key Laboratory of Karst Dynamics, Ministry of Land and Resources, Qixing Road 50#,Guilin China. 541004
3 Institute of Karst Geology, Chinese Academy of Geological Science, Key Laboratory of Karst Dynamics, Ministry of Land and Resources, Qixing Road 50#,Guilin China. 541004
*Corresponding Author E-mail: liliangjiaxiang@163.com
Accepted 19 October 2013
Abstract
According to the theory of global carbon balance, there are still missing carbon sinks. In order to find the missing carbon sinks, Scholars, through indoor and outdoor research, found that temperature, rainfall, CO2 , partial pressure, lithology, and the ions in the water, and many other factors affect the geological carbon sink. Until now, few scholars have carried out research in the Chaotian river basin on the sources and changing process of CO2 in the water in the process of geological carbon sinks. This text is based on Chaotian river as the research object, by selecting three sections, it was found that:1. The HCO3- of the river water mainly comes from the atmosphere in the non-Karst area, and almost half is from the atmosphere in the Karst area, but the atmospheric sources are slightly smaller than rock sources; 2. In the process of surface water in the non-Karst area flowing to the Karst area, the proportion of CO2 gets smaller, with a corresponding increase in carbon sinks; 3. Dissolution rate of carbonates is faster than clastic, so it̓̓̓ s faster to absorb CO2 from the atmosphere. In the second cross-section, when the non-karst water flows into the carbonate rock area, the HCO3- concentration in the water increases immediately. At this time there is 60% HCO3-, which comes from the CO2 in the atmosphere.
Keywords: Chaotian River basin, Different Lithology, CO2, The process of changing
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