A distributed time-variant gain model applied to Yellow River (I) : Model theories and structures

According to the impact of climate changes and human activities on the flow regimes in the Yellow River,a distributed time-variant gain model(DTVGM) is developed.The large-scale DTVGM is a monthly water balance model and it is based on systems theory and physical mechanism.It can solve some hydrologic problems on predictions in ungauged basins(PUB).It has two sub-modules,natural runoff module and human activities module.