Portal de Periódicos da CAPES

Effect of land cover on area! evapotranspiration using Landsat TM data with meteorological and height data- the case of Kitami city, Japan

1996; Taylor & Francis; Volume: 41; Issue: 2 Linguagem: Inglês

10.1080/02626669609491493

2150-3435

Kimiteru Sado, M.M. Islam,

Remote Sensing in Agriculture

Abstract Land cover classification in Kitami, which covers an area of 12 km X 9.6 km, was done using Landsat TM data immediately after geometric correction. For each of seven land cover categories, monthly mean albedo was estimated based on field measurements obtained by the Cold Region Meteorological Observation System (CRMOS) of the Kitami Institute of Technology (KIT) and Kotoda's (1986) suggested values. The permeable zone percentages for urban and residential areas were estimated using the normalized vegetation index obtained with Landsat TM data. The monthly mean areal évapotranspiration for Kitami was obtained by Kojima's (1979) equation in winter and by Morton's (1978) equation in other seasons. The annual variation in estimated monthly mean évapotranspiration, which reaches its maximum value in July, correlated reasonably well with the évapotranspiration in an observation field. The influences on évapotranspiration of land cover category, slope solar radiation and land development were examined.