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《Geoscience》 2018-05
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Research on the Methane Emission and Carbon Isotope of Permafrost Wetland in Qinghai-Tibet Plateau

ZHANG Shunyao;YANG Fan;ZHANG Fugui;SHI Zeming;YANG Zhibin;ZHOU Yalong;WANG Huiyan;College of Earth Sciences,Chengdu University of Technology;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone,Chinese Academy of Geological Sciences;  
As one of the most important wetland area component,carbon cycle in Qinghai-Tibet Plateau plays a critical role in the terrestrial ecosystem. For systematically studying the methane emission of permafrost wetland in Qinghai-Tibet Plateau,by using the chamber method,we made a field measurement on the methane carbon isotope. Furthermore,combining with the adsorbed gas chromatography result,we conducted the gas source discrimination. The results show that the soil methane emission is the highest and mainly on biogenic source in spring. In summer,methane of soil emission is mainly on mixed-genetic source. In autumn,the soil methane emission is the lowest and mainly on thermo genic gas. The biological action is the main influence factor of methane emission. Meanwhile,the gas escaped from the natural gas hydrate underground also influenced the atmospheric methane content to some extent.
【Fund】: 中国地质调查局地质调查项目(DD20179192);; 中央级公益性科研院所基本科研业务专项基金项目(AS2015J02 AS2016Y01)
【CateGory Index】: P593;X142
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