Gawser is a temperature index snow melting model which can be used to verify the hydrology of the basin. It is most suitable for agricultural or forest watersheds, but can be used to demonstrate the hydrology of other types of watersheds, such as urban or suburban water sheds. Gawser is suitable for basins with different development levels and can be used to show the impact of development on watershed hydrology. For example, in order to observe the hydrological impact of deforestation on agriculture, data can be used to simulate hydrological conditions in forest basins, and then reprogrammed to simulate hydrology in agricultural watersheds. We can study the behavior of runoff, infiltration, base flow and other hydrological conditions in each watershed.

Soil crop simulation model has become an effective tool to provide scientific basis for agricultural production and management decision-making. APSIM model was developed by Australian scientists to simulate various biological processes in agricultural system. In particular, the mechanism model of ecological and economic output of each component of the system under climate risk. APSIM has been verified and applied in soils with temperate continental climate, temperate marine climate, subtropical arid climate and Mediterranean climate zone, including clay, expansive soil, deformable soil, silty sandy soil, silty loam and silty clay loam, which can be used to simulate more than 20 crops such as wheat. APSIM model has good ability to describe crop structure and crop rotation sequence adjustment, crop yield, quality prediction and control, and soil water flow imbalance control under different planting patterns.