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| その他のタイトル |
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ESTIMATION OF EVAPOTRANSPIRATION FOREST AREAS IN SNOWY AND COLD REGIONS
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| 作成者 |
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| 権利情報 |
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Copyright 1999 土木学会 ダウンロードを含むこの著作物の利用は、著作権法の私的使用及び引用の範囲に限り認められます。その範囲外の利用については、土木学会の承諾が必要です。
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| 主題 |
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other
NDVI
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other
actual evapotranspiration
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other
forest area
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other
snowya nd cold region
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NDC
510
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| 内容注記 |
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Other
This paper deals with estimation of actual evapotranspiration in order to evaluate the hydrologic cycle in a catchment area. Estimation of the hydrologic cycle is required for effective water use, flood control, and evaluation of water environment. However, it is difficult to estimate evapotranspiration in a wide area because of a scarcity of measured data. A method for using remote sensing data to estimate evapotranspirasion is proposed. In previous studies, NDVI values were applied to estimate the evapotranspiration. However, estimated results did not consider water balance in the catchment area scale. We calculate the evapotranspiration several dam catchmment areas in a snowy and cold region. The study areas are covered by mountains with steep slopes and its land use is entirely forested. In these areas, topographic effects on rainfall as well as snowfall must be taken into account. Rainfall and snowfall are accurately estimated by taking into account topographic factors such as elevation and direction of slope. As a result, actual evapotranspiration is calculated by applying the water balance method based on precipitation data. Finally, actual evapotranspiration is related to NDVI values so that it can be generally estimated in a wide catchment area.
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| 出版者 |
土木学会
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| 日付 |
Created2016-02-15
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Issued1999-02
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| 言語 |
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| 資源識別のタイプ |
journal article |
| 出版タイプ |
VoR |
| 資源識別子 |
URI
http://hdl.handle.net/10258/1526
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isIdenticalTo
DOI
https://doi.org/10.2208/prohe.43.85
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isIdenticalTo
NAID
130004043016
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| 収録誌情報 |
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NCID
AN10426673
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ISSN
0916-7374
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水工学論文集
43, 85-90
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| ファイル |
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| コンテンツ更新日時 |
2020-06-25 |
