Relationship among the surface albedo, spectral reflectance of canopy, and evaporative fraction at grassland and paddy field

For the purpose of estimating land surface fluxes over a large area, use of remote sensing techniques is and will be essential. Particularly, “ in situ ” collection of ground truth data has been a very important task for the development of satellite oriented “ algorithms ”. In this study, we observed “a patch scale” visible and near infrared spectral reflectance, which is obtainable from satellites, and land surface fluxes during and post-growing season at grassland and paddy field: Seasonal trends at grassland and at paddy field were quite different, because of the differences in water as well as growing environment. A good direct correlation was found between vegetation index (NDVI) and surface resistance during the growing season at grassland. A similar result was confirmed between NDVI and surface resistance at paddy field.