Abstract
The Huaihe River Basin is vast granary in China, therefore landuse and cropping cycle information are important for water resources and hydrological analysis. In this study, landuse and water usage rule are estimated from satellite remote sensing analysis and field survey, and VSW index method and agricultural statistic data are used for calibration. Estimated landuse data and water usage rule are applied to the LSS (Land Surface scheme) in the Shiguan River Basin (one part of Huaihe River Basin), and the water and heat flux are calculated for 4 months. The calculated runoff and irrigation water in LSS are validated using hydrological data.