极地研究

极地研究 ›› 1998, Vol. 9 ›› Issue (2-English): 92-100.

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Carbon cycle in the Arctic terrestrial ecosystems in relation to the global warming

 Fang Jingyun and Fei Songlin   

  1. Department of Urban and Envronment Science, Peking University, and Center for Ecological Research & Education, Peking University, Beijing 100871, China

  • 出版日期:1948-06-30 发布日期:1948-06-30
  • 通讯作者: Fang Jingyun

Carbon cycle in the Arctic terrestrial ecosystems in relation to the global warming

 Fang Jingyun and Fei Songlin   

  1. Department of Urban and Envronment Science, Peking University, and Center for Ecological Research & Education, Peking University, Beijing 100871, China

  • Online:1948-06-30 Published:1948-06-30
  • Contact: Fang Jingyun

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摘要：

The relationship between the global warming and carbon cycle in the Arctic terrestrial ecosystem was discussed based on a literature survey. As a result, atmospheric carbon dioxide (CO2) and methane (CH4) concentrations increased markedly during the past few centuries. The increase in concentration of these greenhouse gases was coupled with the global warming. Summer temperature in the Arctic regions showed a rapid rising. The Arctic soil is a huge organic carbon pool, with a mean estimate of 355×109 tC, being 23.7%-32.3% of global soil carbon pool. At present the Arctic terretrial ecosystem is functioning as a sink of atmospheric CO2. The rising global temperature resulting from an increase in atmospheric CO2 would influence markedly the Arctic soil carbon and CO2 source/sink relation of the Arctic ecosystems.

关键词: Arctic, terrestrial ecosystem, carbon cycle, global warming, soil carbon pool

Abstract:

The relationship between the global warming and carbon cycle in the Arctic terrestrial ecosystem was discussed based on a literature survey. As a result, atmospheric carbon dioxide (CO2) and methane (CH4) concentrations increased markedly during the past few centuries. The increase in concentration of these greenhouse gases was coupled with the global warming. Summer temperature in the Arctic regions showed a rapid rising. The Arctic soil is a huge organic carbon pool, with a mean estimate of 355×109 tC, being 23.7%-32.3% of global soil carbon pool. At present the Arctic terretrial ecosystem is functioning as a sink of atmospheric CO2. The rising global temperature resulting from an increase in atmospheric CO2 would influence markedly the Arctic soil carbon and CO2 source/sink relation of the Arctic ecosystems.

Key words: Arctic, terrestrial ecosystem, carbon cycle, global warming, soil carbon pool