Back

Title
  • ja 積雪寒冷地域の森林域における蒸発散量の推定
Alternative
  • ESTIMATION OF EVAPOTRANSPIRATION FOREST AREAS IN SNOWY AND COLD REGIONS
Creator

加藤, 晃司

中津川, 誠

橋本, 識秀

新目, 竜一

Rights
    • 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。
Subject
  • Other NDVI
  • Other actual evapotranspiration
  • Other forest area
  • Other snowya nd cold region
  • NDC 510
Description
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.
Publisher土木学会
Date Created 2016-02-15 , Issued 1999-02
Languagejpn
NIItypejournal article
VersiontypeVoR
Identifier URI http://hdl.handle.net/10258/1526
Relation
  • isIdenticalTo DOI https://doi.org/10.2208/prohe.43.85
  • isIdenticalTo NAID 130004043016
Journal
    • NCID AN10426673
    • ISSN 0916-7374
    • 水工学論文集
    43, 85-90
File
Oaidate2019-07-29T03:42:32Z