Permalink : http://hdl.handle.net/2115/45159

本論で, 筆者らは北海道を含む冷温帯から亜寒帯の広範囲で見られる代表的な落葉樹林を対象に行った森林動態, CO2フラックスに関する長期観測研究および大気―植生動態モデル研究の一例を紹介する. これらの研究を通して, 森林生態系の構造や機能の変化が大気―植生間のCO2交換過程に及ぼす影響は大きいことを明記した. さらに, 今後の北方森林群落における大気―植生（森林動態）間の相互作用の解明に必要とされる研究課題について触れ, 植物の生理生態学的視点から大気―植生動態モデル開発を進めていくことが必要であるとの見解をまとめた.
Eddy covariance measurements have been conducted to monitor seasonal and annual variability in CO2 exchanges between the atmosphere and the cool-temperate deciduous forest ecosystems in Northern Japan since 2003. An analysis on dynamic changes in the forest has been made based on forest inventory data over a decade since 1998. In recent years, an atmosphere-forest dynamics model has been developed and was applied to the forest to examine whether or not the model describes realistically forest dynamics and the atmosphere-forest CO2 exchange. In this paper, we reported the observed and simulated results on forest dynamics and the atmosphere-forest CO2 exchange. From the report, we specified the importance of the effect of structural and physiological changes in a forest stand on the atmosphere-forest CO2 exchange and, therefore, an additional improvement of the developed atmosphere-forest dynamics model through eco-physiological approaches to elucidate atmosphere-biosphere interaction in the future.