The methane flux along topographical gradients on a glacier foreland in the High Arctic, Ny-Alesund, Svalbard
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概要
- 論文の詳細を見る
In order to examine the relationship between the methane (CH_4) flux and soil factors and vegetation in High Arctic tundra, we investigated the CH_4 flux along topographical gradients on a glacier foreland in Ny-Alesund, Svalbard (79°N, 12°E). The CH4 flux rates varied widely among sites even within the same vegetation type, ranging from positive (emission) to negative (absorption) values. High CH_4 emission rates were detected on ridges and in sites with a low soil water content, but there was no significant relationship between CH_4 flux rates and soil factors including soil moisture, pH, soil carbon and nitrogen content. Mean values of CH_4 emission and CH_4 absorption were 0.30±0.33 mg m^(-2) h^(-1) (n=12) and 0.11±0.06 mg m^(-2) h^(-1) (n=11), respectively. These findings suggest that the study area is a small source of CH_4 with a mean flux of 0.11 mg CH_4 m^(-2) h^(-1) (0.083 mg C m^(-2) h^(-1)). It was concluded that carbon flux derived from CH_4 accounts for an extremely small proportion of the total carbon flux from soil in this area.
- 国立極地研究所の論文
著者
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NAKATSUBO Takayuki
Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima
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Kanda H
National Inst. Polar Res. Tokyo
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Koizumi Hiroshi
Waseda Univ. Tokyo Jpn
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KOIZUMI Hiroshi
River Basin Research Center, Gifu University
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Kanda Hiroshi
Institute For Basin Ecosystem Studies Gifu University
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Ohtsuka Toshiyuki
Faculty Of Science Ibaraki University
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Ohtsuka Toshiyuki
Laboratory Of Ecology Graduate School Of Science And Technology Chiba University
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Nakatsubo Takayuki
Department Of Biology School Of Education Waseda University
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Kanda H
Department Of Biology National Institute Of Polar Research
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Koizumi Hiroshi
Department Of Biology Faculty Of Education And Integrated Arts And Sciences Waseda University
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Nakatsubo T
Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U
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Nakatsubo T
Hiroshima Univ. Hiroshima Jpn
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Ohtsuka Toshiyuki
Institute For Basin Ecosystem Studies Gifu University
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Adachi Minaco
Department of Global Resources, National Institute for Agro-Environmental Sciences
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Adachi Minaco
Department Of Global Resources National Institute For Agro-environmental Sciences
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Koizumi Hiroshi
River Basin Research Center Gifu University
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