Soil respiration in a high arctic glacier foreland in Ny-Alesund, Svalbard

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概要

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• Soil respiration rates were measured in a successional glacier foreland in Ny-_lesund, Svalbard, and the amount of CO2 efflux during the plant-growing season was estimated using a simple regression model. Three study sites (Site 1, Site 2 and Site 3) were set up along with the primary succession in the deglaciated area of East Br_gger glacier in Ny-_lesund, Svalbard, Norway (79‹N 12‹E). Another study site, Site RB, was set up on a riverbed in the Bay River between Site 2 and Site 3. Soil respiration (SR), air temperature at 10 cm height (AT), soil surface temperature (SST) and soil temperature at 1 cm depth (ST) were measured at the four study sites with an open-airflow system using an infra-red gas analyzer from July to August, 1995. The mean soil respiration rate varied among the four sites: 6.2, 44, 63 and 3.7 mg CO2 m-2 h-1 at Site 1, Site 2, Site 3 and Site RB, respectively. These differences in the soil respiration rate among the four sites corresponded with the soil organic amount, microbial biomass, and root biomass. The soil respiration rate showed the best correlation with AT at Site 1, Site 2 and Site RB, and with ST at Site 3. The cumulative amount of CO2 efflux calculated using correlation equations obtained from the above relationships between SR and AT or ST was 5.8, 46, 69 and 3.3 g CO2 m-2 at Site 1, Site 2, Site 3 and Site RB, respectively, for two months (from July to August, 1995). These values were extremely low compared to those of warmer ecosystems, such as low-arctic tundra, temperate mixed forests, and tropical moist forests.

• 国立極地研究所の論文
• 2004-02-01

著者

• KOIZUMI Hiroshi

  Institute for Basin Ecosystem Studies, Gifu University

• NAKATSUBO Takayuki

  Department of Environmental Dynamics and Management, Graduate School of Biosphere Science, Hiroshima

• 久米 篤

  九州大学農学研究院

• 久米 篤

  科学技術振興事業団森林衰退研究センター : 九州大学大学院農学研究院

• 久米 篤

  九州大学北海道演習林

• 久米 篤

  九州大学大学院農学研究院附属福岡演習林

• 久米 篤

  富山大学理学部生物圏環境科学科

• KANDA Hiroshi

  Department of Pediatrics and Child Health, Kurume University School of Medicine

• Kume Atsushi

  Kyushu Univ. Hokkaido Jpn

• Kume A

  Waseda Univ. Tokyo Jpn

• Kume Atsushi

  Department Of Environmental Biology And Chemistry Faculty Of Science University Of Toyama

• Kume Atsushi

  Department Of Forest And Forest Products Sciences Kyushu University

• Kanda H

  National Inst. Polar Res. Tokyo

• Koizumi Hiroshi

  Waseda Univ. Tokyo Jpn

• Kume Atsushi

  Department Of Environmental Biology And Chemistry Graduate School Of Science And Engineering Univers

• Kume Atsushi

  Department Of Environmental Biology And Chemistry Toyama University

• Kume Atsushi

  Department Of Environmental Biology And Chemistry Faculty Of Science Toyama University

• Bekku Yukiko

  Department of Primary Education, Tsuru University

• Bekku Y

  Tsuru Univ. Tsuru Jpn

• Bekku Yukiko

  Department Of Biology Faculty Of Science Tokyo Metropolitan University

• Kanda Hiroshi

  Institute For Basin Ecosystem Studies Gifu University

• Koizumi Hiroshi

  Institute For Basin Ecosystem Studies Gifu University

• MASUZAWA Takehiro

  Department of Biology, Faculty of Science, Shizuoka University

• Nakatsubo Takayuki

  Department Of Biology School Of Education Waseda University

• Kume Atsushi

  Department Of Biology School Of Education Waseda University

• Kume Atsushi

  Department Of Forest And Forest Products Sciences Faculty Of Agriculture Kyushu University

• Masuzawa T

  Department Of Biology And Geosciences Graduate School Of Science And Technology Shizuoka University

• Masuzawa T

  Department Of Biology Faculty Of Science Shizuoka University

• Masuzawa Takehiro

  Department Of Biology Faculty Of Science Shizuoka University

• Kanda H

  Department Of Biology National Institute Of Polar Research

• Koizumi Hiroshi

  Department Of Biology Faculty Of Education And Integrated Arts And Sciences Waseda University

• Nakatsubo T

  Department Of Environmental Dynamics And Management Graduate School Of Biosphere Science Hiroshima U

• Nakatsubo T

  Hiroshima Univ. Hiroshima Jpn

• Kume Atsushi

  Ashoro Research Forest Department Of Forest And Forest Products Sciences Faculty Of Agriculture Kyus

• Masuzawa Takehiro

  Department Of Biology And Geosciences Faculty Of Science Shizuoka University

• Kanda Hiroshi

  Department Of Applied Physics Faculty Of Engineering University Of Tokyo:(present Address)central La

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