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| The research on the effect of gas hydrate exploration on wetland carbon cycle in the Tibetan Plateau |
| ZHANG Shun-Yao1, 2, 3, ZHANG Fu-Gui2, 3, YANG Zhi-Bin2, 3, ZHOU Ya-Long2, 3, WANG Hui-Yan2, 3, TANG Rui-Ling2, SUN Zhong-Jun2, 3 |
1.College of Earth Sciences Chengdu University of Technology,Chengdu 610000,China;
2.Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;
3.Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone,Chinese Academy of Geological Sciences,Langfang 065000,China; |
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Abstract Wetland is an important part of global carbon cycle. As the largest wetland in China, the Tibetan Plateau is a hotspot in the research on wetland carbon cycle. In this paper, the authors evaluated the effect of gas hydrate exploration on wetland carbon cycle in Muli Basin, Qilian Mountain, the Tibetan Plateau. By using geochemical methods such as top gas and acidolysis hydrocarbon, the authors measured the values of the acidolysis hydrocarbon in 2009, 2011, 2013, which were 15.55 μL/kg, 13.73 μL/kg, and 12.82 μL/kg respectively, with no significant increase. The top gas in 2009, 2011, 2013 were 4.49 μL/L, 6.16 μL/L, and 19.22 μL/L respectively, showing increasing trend. The distribution characteristics analysis shows that top gas has short time efficiency, and can not be used to indicate the increase of hydrocarbon gas. The results show that the effect of gas hydrate wells has the features of wide range and low strength on regional carbon cycle system. The environment impact is less and in the controllable range.
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Received: 08 September 2017
Published: 20 December 2017
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