5.4 Results and discussion

5.4.1 Calibration and verification

The simulation was carried out with continuous input materials of 11years' precipitation and meteorological data (from 1980 to 1990).The calibration results of simulated hydrograph against the observations at each hydrological station were presented in Figure 5-6 from 1980 to 1985 while the validation results from 1986 to 1990 were drawn following the simulated time series.Parameters of DHM are physically based.Hence，they do not require anycalibration theoretically.However，some parameters are unable to be obtaineddirectly from remote sensing or investigation results，especially at a finer raster resolution (for heterogeneity).Some physical parameters are conferred according to land cover or soil texture using values in looking-up table from reference ......     （共10010字）    [阅读本文]>>