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Effects of topography and fire on soil CO2 and CH4 flux in boreal forest underlain by permafrost in northeast China

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Effects of topography and fire on soil CO2 and CH4 flux in boreal forest underlain by permafrost in northeast China

In: Ecological engineering, September 2017, Vol.106, pp.35-43
Autor: Song, Xiaoyan , Wang, Genxu , Ran, Fei , Chang, Ruiying , Song, Chunlin , Xiao, Yao
Ort, Verlag, Jahr: , Elsevier B.V, 2017
ISBN/ISSN/ISMN: 0925-8574
Kollektion: ScienceDirect (Elsevier)
Erscheinungsform: article

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Autor:Song, Xiaoyan
Autor:Wang, Genxu
Autor:Ran, Fei
Autor:Chang, Ruiying
Autor:Song, Chunlin
Autor:Xiao, Yao
Titel:Effects of topography and fire on soil CO2 and CH4 flux in boreal forest underlain by permafrost in northeast China
Verlag:Elsevier B.V
Jahr:2017
ISBN/ISSN/ISMN:0925-8574
Sprache:eng
Zusammenfassung:<p>Regional quantification of soil CO2 and CH4 fluxes in boreal forests remains difficult because of high landscape heterogeneity and fire disturbance coupled with a sparse measurements network. Most of the work focuses on the separate effects of fire or topography, and as a result, the spatial variability in the response of soil carbon flux to fire remains unclear. A two-year field experiment was conducted in the boreal forest of the DaXing’anling Mountains to investigate the effects of topography (ridge and depression) and fire on soil CO2 and CH4 fluxes and to determine how the effects of fire vary with topography. The results showed that soil carbon flux to the atmosphere in this region was dominated by soil CO2 flux. Topography had significant effect on soil carbon fluxes, with higher soil CO2 emissions and CH4 uptakes on the ridge than in the depression, whether burned or not, and these topographical differences were amplified by fire. Fire significantly increased soil CO2...
Kollektion:ScienceDirect (Elsevier)
In:Ecological engineering, September 2017, Vol.106, pp.35-43
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