Sunlight facilitates the absorption of methane and the emissions of nitrous oxide in High Arctic tun

• 作 者: FangfangLi[1]RenbinZhu[1]TaoBao[1]QingWang[1]HuaXu[2]JingMa[2]
• 机 构: Institute of Polar Environment,School of Earth and Space Sciences,University of Science and Technolo
• 出 处: 2015中国极地科学学术年会
• 发表日期: 2015年期

　　CH4 and N2O fluxes has important influence on climate change.While many studies measurements of CH4 and N2O emissions have been made in tropical wetlands,few research were studied in high arctic tundra.We examined CH4 and N2O fluxes in High Arctic tundra under both light(measured in transparent chambers)and dark(measured in opaque chambers)conditions.We further examined Spatial and diurnal variation of the GHG gases.Fluxes of N2O switched from sources under dark conditions to sinks under light conditions,while sunlight enhanced CH4 weak uptake.In our study,the environmental virables such as soil temperature,air temperature champer temperature and moisture content show no significant correlation with CH4 and N2O fluxes in High Arctic tundra.