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Response of of greenhouse gas emissions from three types of wetland soils to simulated temperature change on the Qinghai-Tibetan Plateau
Liu, Y; Liu, GH; Xiong, ZJ; Liu, WZ
刊名ATMOSPHERIC ENVIRONMENT
2017
卷号171页码:17-24
英文摘要Wetlands emit a large quantity of greenhouse gases into the atmosphere and contribute significantly to global warming. The Qinghai-Tibetan Plateau, known as the "Third Pole" of the earth, contains abundant and diverse wetlands. Due to increasing human-induced pressures such as reclamation, overgrazing and climate change, many plateau wetlands have been degraded or destroyed. Until now, the response of soil greenhouse gas emissions to extreme summer temperatures in the plateau wetlands remains unknown. In this study, we collected 36 soil samples from riverine, lacustrine and palustrine wetlands on the Qinghai-Tibetan Plateau. We compared the carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) emissions from soils incubated aerobically at 7, 12, and 19 degrees C. The results showed that the emissions of CH4 and N2O but not CO2 were significantly affected by the simulated temperature change. The N2O emission rate was considerably higher in palustrine wetlands compared with lacustrine and riverine wetlands. However, the CO2 and CH4 emissions did not differ significantly among the three wetland types. The ratio of CO2 to CH4 production increased with increasing incubation temperatures. The global warming potential of greenhouse gases at 19 degrees C was approximately 1.18 and 2.12 times greater than that at 12 and 7 degrees C, respectively. Our findings suggest that temperature change has a strong effect on soil greenhouse gas emissions and global warming potential of wetlands on the Qinghai-Tibetan Plateau, especially palustrine wetlands. Therefore, targeted strategies should be developed to mitigate the potential impacts of climate warming on the plateau.
内容类型期刊论文
源URL[http://202.127.146.157/handle/2RYDP1HH/1276]  
专题中国科学院武汉植物园
推荐引用方式
GB/T 7714
Liu, Y,Liu, GH,Xiong, ZJ,et al. Response of of greenhouse gas emissions from three types of wetland soils to simulated temperature change on the Qinghai-Tibetan Plateau[J]. ATMOSPHERIC ENVIRONMENT,2017,171:17-24.
APA Liu, Y,Liu, GH,Xiong, ZJ,&Liu, WZ.(2017).Response of of greenhouse gas emissions from three types of wetland soils to simulated temperature change on the Qinghai-Tibetan Plateau.ATMOSPHERIC ENVIRONMENT,171,17-24.
MLA Liu, Y,et al."Response of of greenhouse gas emissions from three types of wetland soils to simulated temperature change on the Qinghai-Tibetan Plateau".ATMOSPHERIC ENVIRONMENT 171(2017):17-24.
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