Abstract
A soil water balance model (SWBM) was ported to an existing PC-GIS platform. Navigational linkages to PC-GIS database are accomplished by using CLIPPER 5.0 language. User interaction is provided through a set of menus and/or prompts. Soil-, crop-, and climate-related parameters are stored in a database (dBASE III PLUS format) and linked to GIS by assigned codes. Simulation can be performed simultaneously for a combination of soil and crop types. The model output provides estimates of the daily status of plant available water and the drainage potential for a given soil profile during the growing season.
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