Evapotranspiration ratio of six major forest types in the Pearl River Delta are studied in this paper, including eucalyptus forest, fruit forest, coniferous forest, shrub forest, coniferous forest, and broad-leaved mixed forest. This paper analyses PT-T model, which was based on Priestley-Taylor extended model, and had a result that land surface temperature or temperature difference between day and night could be used to evaluate the evapotranspiration factor. Then the MODIS data and TM data were used to calculate the evapotranspiration of water consumption of six forest types. The result showed that water consumption of different forest had little difference, and the EF of eucalyptus is smaller than the others. |