BIOME3 model is a balanced terrestrial biosphere model. It attempts to combine biogeography and biogeochemical modeling to simulate vegetation distribution and biogeochemical characteristics in a global framework, and to couple vegetation distribution into biogeochemistry.

The swrrbwq model simulates hydrology, sediment, nutrient and pesticide transport in a large and complex rural watershed. The accuracy of the watershed management model in terms of rainfall, sediment use, and soil management can be reasonably explained in terms of the accuracy of the operation of the watershed model in terms of rainfall, soil use and so on.

Topoflow is a powerful and spatially distributed hydrological model with a user-friendly click interface. Its main purpose is to simulate many different physical processes in a watershed, and its goal is to accurately predict how various hydrological variables will evolve in response to climate forces.

The recess program is used to determine the decline index and determine the main decline curve from the analysis of runoff records.