ペンマンーモンティース式を組み合わせた森林域降雨遮断モデルの相互比較

• ムルング デオグラティアス

  京都大学大学院工学研究科

• 椎葉 充晴

  京都大学大学院工学研究科

• 市川 温

  京都大学大学院工学研究科

書誌事項

タイトル別名

• Comparison of Forest Canopy Interception Models Combined with Penman-Monteith Equation.

抄録

Three models of interception process : Rutter model with Deardorff's power function, Deardorff model and Modified Kondo model, each in combination with Penman-Monteith equation applied to the same climatic forcing over the year of simulation were compared. The modification of the Kondo's model done in our study includes the water balance component, between storms evaporation and transpiration including the power function, storage changes and the canopy drainage. The comparison was meant for assessing the simple Modified Kondo model developed in Japan and demonstration of the importance of the power function. The Penman-Monteith equation was the kernel for determination of evaporation and transpiration rates. Its use in this study was proposed because it has been widely used in Japan and in experimental sites and therefore can be used as a basis for comparison. Since much interest was on net rainfall, the control volume for the water accounting was between top of the canopy and above the ground surface and hence does not include soil moisture and transpiration. Results showed that forest canopy evaporation ranged from 22 to 29% of gross rainfall. Much model prediction differences were observed in winter, with lower rainfall intensity where wet canopy storages or rainfall did not meet the potential (atmospheric) evaporation demand. The annual net rainfall and transpiration ranged from 71 to 78% of gross rainfall and from 727 to 733 mm respectively. The adopted power function had significant impact on transpiration rate and small impact on evaporation rate for the Modified Kondo model. The Modified Kondo model predicted fairly close to the two models and therefore can be used for providing hourly input into hydrological models. The differences in the predicted hydrological fluxes resulted from the different model formulations especially throughfall coefficients and drainage functions.

収録刊行物

• 水文・水資源学会誌

  水文・水資源学会誌 15 (6), 555-568, 2002

  水文・水資源学会

キーワード

• ペンマン―モンティース式,閉塞した森林キャノピー,LAI,蒸発,蒸散,キャノピーでの水収支,匹見川流域

詳細情報

• CRID: 1390282679416826880
• NII論文ID: 130003664084
• NII論文ID: 10010022191
• NII書誌ID: AN10088049
• DOI: 10.3178/jjshwr.15.555
• ISSN: 13492853
• ISSN: 09151389
• ISSN: http://id.crossref.org/issn/09151389
• NDL書誌ID: 6349430
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6349430
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可