山岳地域における森林生態系の炭素フラックスの時間変動とその要因

DOI Web Site 被引用文献2件 参考文献51件

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タイトル別名
  • Factors Controlling Carbon Fluxes in Mountainous Forest Ecosystems on Yearly to Decadal Timescales
  • サンガク チイキ ニ オケル シンリン セイタイケイ ノ タンソ フラックス ノ ジカン ヘンドウ ト ソノ ヨウイン

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 Integrated studies based on the flux tower network during the past two decades reveal the spatial variability of the annual values of net ecosystem production (NEP) in different terrestrial ecosystems. These ecosystems act as a huge carbon sink for human-induced CO2 emissions as a whole. Now, we need to understand the factors controlling carbon fluxes over timescales to comprehend how terrestrial ecosystems will respond to upcoming decades of climate change. This paper reviews studies of year-to-year changes of NEP of terrestrial ecosystems and shows how NEP responds to present climate fluctuations. It also reports long-term and intensive studies of carbon cycling in temperate regions, not only eddy covariance but also biometric measurements, conducted at Harvard and Takayama Forests. These temperate forests are not climax forests at non-equilibrium stages due to human disturbances in the mid-20th century. Successional changes of ecosystem structures that respond to disturbances greatly affect ecosystem functions such as NEP. Therefore, we need to understand not only ecosystem responses to climatic factors, but also age and structural effects on NEP. Long-term monitoring of ecosystems is necessary to determine how successional dynamics affect carbon cycling in mountainous forest regions of Japan.

収録刊行物

  • 地学雑誌

    地学雑誌 122 (4), 615-627, 2013

    公益社団法人 東京地学協会

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