Spatial variations in evapotranspiration over East Asian forest sites. II. Surface conductance and aerodynamic conductance

• Khatun Rehana

  Graduate School of Bioagricultural Sciences, Nagoya University

• Ohta Takeshi

  Graduate School of Bioagricultural Sciences, Nagoya University

• Kotani Ayumi

  Graduate School of Bioagricultural Sciences, Nagoya University

• Asanuma Jun

  Terrestrial Environment Research Center, Tsukuba University

• Gamo Minoru

  National Institute of Advanced Industrial Science and Technology

• Han Shijie

  Institute of Applied Ecology, Chinese Academy of Sciences

• Hirano Takashi

  Graduate School of Agriculture, Hokkaido University

• Nakai Yuichiro

  Forestry and Forest Products Research Institute

• Saigusa Nobuko

  National Institute for Environmental Studies

• Takagi Kentaro

  Field Science Center for Northern Biosphere, Hokkaido University

• Wang Huimin

  Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences

• Yoshifuji Natsuko

  Graduate School of Agriculture, Kyoto University

抄録

Evapotranspiration over forest surfaces is mainly constrained by environmental and forest structural components through their influence on surface conductance (G_s) and aerodynamic conductance (G_a). Tower based eddy covariance data from 16 forest sites in East Asia (2°S to 64°N) were used to examine the sensitivity of Matsumoto and Nakai models for predicting G_s and G_a, respectively. Daytime dry-canopy data for the growing season were used in this study. Comparisons between model predictions and observed G_s and G_a showed good agreement, suggesting that the models were suitable for predicting G_s and G_a with reasonable accuracy. However, the model for G_s was unable to predict G_s accurately when soil water content was low (∼10%). In this circumstance, effective soil water content and a more comprehensive method for modelling the soil water content function must be used. G_s in East Asia was largely depended on vapour pressure deficit and secondarily on soil water content. G_a was largely affected by leaf area index compared with stand density.<br>

収録刊行物

• Hydrological Research Letters

  Hydrological Research Letters 5 88-92, 2011

  水文・水資源学会／日本地下水学会／日本水文科学会／陸水物理研究会

キーワード

• Earth and Planetary Sciences (miscellaneous)
• Water Science and Technology

詳細情報

• CRID: 1390001205288751104
• NII論文ID: 130002125900
• DOI: 10.3178/hrl.5.88
• ISSN: 18823416
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可