Estimation of evapotranspiration using remote sensing and GIS data

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  • リモートセンシング・GISデータによる実蒸発散量推定
  • リモートセンシング GIS データ ニ ヨル ジツジョウハッサンリョウ スイテイ

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Evapotranspiration is a key element in water conservation-related forest public functions. The purpose of this study was to establish an estimation for areal evapotranspiration, using a modified Penman method, remote sensing and GIS data. The study area was the Tsuga dam site basin and the Ushiro river basin in Kochi Prefecture. Results were compared with information estimated by hydrological equations. Our results show that this method could reliably estimate and reproduce actual evapotranspiration over a wide area. Moreover, the possibility of using this application for land use simulation was clarified. This method may also be useful in providing information for the evaluation of public function in forest management.

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