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Ruoergai highland peat wetland peat is China's largest wetland, elevation 3500m. Since peat wetlands huge amount of carbon storage, which in the global carbon cycle and climate change has an important position. In the context of global climate change, peat wetland greenhouse gas emissions has become a focus of global attention. How to reduce greenhouse gas emissions peat wetlands or national implementation of carbon trading will become an important issue. Carry peat wetland study of greenhouse gases, can help us understand exactly peat wetlands rules and greenhouse gas emissions contribute to global warming potential, evaluate different measures for wetland restoration effects of greenhouse gas emissions for the Chinese government to participate in global climate change negotiations to provide scientific and technical support for the monitoring and management of wetlands to provide greenhouse gas monitoring methods and technical specifications. In order to investigate water and other environmental factors on Ruoergai natural wetlands CH4 Emission and compare different use patterns of greenhouse gas sources and sinks condition, we use in situ - static camera obscura - meteorological chromatography, in 2009 to 2010 respectively Ruoergai natural wetlands, two kinds of restoration of wetlands (rotational grazing, landfill restoration), degraded wetlands greenhouse gas fluxes measured. The results showed that: (1) the observation period, growing season, different groundwater gradient diurnal variation of natural wetlands have \00,21:00 and 0:00. Thawing of the day at 11:00 to meet emission peak. (2) emissions from large growing season in the non-growing season and thawing period. Estimating CH4 emissions from thawing of natural wetlands account for the total annual emissions of 10% of the total annual emissions growing season, 61% of non-growing season longer, accounting for 29% of annual emissions. (3) different years during the growing season CH4 fluxes vary greatly, CH4 emissions in 2009 growing season mean 9.83mg.m-2.h-1, ranged from 7.47-14.48mg.m-2.h-1. 2010 In the flux of 7-9 month growing season mean 2.89mg.m-2.h-1. ranged 1.04-4.28 mg.m-2.h-1. (4) water table, monthly sunshine duration, total radiation, SOC content, soil TN content, soil bulk density, plant dry weight is the main factor affecting CH4 emissions. (5) years of natural wetlands CH4 emissions 394.68Kg.hm-2, a strong source of CH4, drainage and grazing significantly reduced CH4 emissions, but also increases the CO2 emissions, consider three integrated GHG warming potential (GWP ), landfill ditches (50.86 t.hm-2.yr-1) gt; rotational grazing (37.12t.hm-2.yr-1) gt; Nature (36.65t.hm-2.yr-1) gt; degradation (17.47 t.hm-2.yr-1), filling ditches and grazing wetlands GWP natural wetlands were 1.38 times and 1.01 times. (6) wetland restoration can significantly increase the carbon sink effect. The estimates, natural wetlands, landfill ditches, wetlands and grazing degraded wetlands four kinds of wetlands were NEE Total -9.86 t.hm-2, -4.83 t.hm-2, -6.15 t.hm-2, 0.06 t. hm-2, degraded wetlands showed a weak carbon source, emissions to the atmosphere annually 0.06 t.hm-2 carbon, while the other three types of wetlands are carbon sinks. NEE largest natural wetlands are grazing wetlands 1.60 times 2.04 times landfill wetlands. Two recovery methods comparison, rotational grazing of wetland carbon sink effect is greater than the landfill ditch wetland.
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