globalchange  > 科学计划与规划
DOI: 10.1002/2016GL067718
论文题名:
Large contribution of boreal upland forest soils to a catchment-scale CH4 balance in a wet year
作者: Lohila A.; Aalto T.; Aurela M.; Hatakka J.; Tuovinen J.-P.; Kilkki J.; Penttilä T.; Vuorenmaa J.; Hänninen P.; Sutinen R.; Viisanen Y.; Laurila T.
刊名: Geophysical Research Letters
ISSN: 0094-9203
EISSN: 1944-8934
出版年: 2016
卷: 43, 期:6
起始页码: 2946
结束页码: 2953
语种: 英语
英文关键词: areal upscaling ; atmospheric concentration ; methane flux ; water-saturated soil
Scopus关键词: Atmospheric chemistry ; Catchments ; Forestry ; Landforms ; Methane ; Runoff ; Soils ; Wetlands ; Atmospheric concentration ; Atmospheric methanes ; Catchment area ; Catchment scale ; Methane fluxes ; Upscaling ; Water saturated soils ; Wetland emissions ; Soil pollution ; boreal forest ; carbon flux ; catchment ; forest soil ; methane ; nutrient cycling ; saturated medium ; soil emission ; source-sink dynamics ; wetland
英文摘要: Upland forest soils affect the atmospheric methane (CH4) balance, not only through the soil sink but also due to episodic high emissions in wet conditions. We measured methane fluxes and found that during a wet fall the forest soil turned from a CH4 sink into a large source for several months, while the CH4 emissions from a nearby wetland did not increase. When upscaled to the whole catchment area the contribution of forests amounted to 60% of the annual CH4 emission from the wetlands, while in a normal year the forest soil consumes 10% of the wetland emission. The period of high upland soil emission was also captured by the nearby atmospheric concentration measurement station. Since the land cover within the catchment is representative of larger regions, our findings imply that upland forests in the boreal zone constitute an important part in the global CH4 cycle not previously accounted for. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977995968&doi=10.1002%2f2016GL067718&partnerID=40&md5=fa49c429718a620c507f7c41355a4fce
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10166
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Atmospheric Composition Research, Finnish Meteorological Institute, Helsinki, Finland

Recommended Citation:
Lohila A.,Aalto T.,Aurela M.,et al. Large contribution of boreal upland forest soils to a catchment-scale CH4 balance in a wet year[J]. Geophysical Research Letters,2016-01-01,43(6).
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