Simulation of the Soil Water Balance of an Undeveloped Prairie in West-CentralFlorida

摘要

This report presents part of the results from a 4-year study designed to examinethe near-surface water balance of a site occupied by a prevalent type of native vegetation in west-central Florida. The overall objective of the study was to provide, by means of quantitative description, an example of a site water balance for west-central Florida and to improve the understanding of and predictive capabilities for hydrologic processes in the unsaturated zone. The specific objectives of the study were to describe the water balance for seasonal and annual time frames and the develop, test, and implement a computer model to simulate the water balance of the soil above the water table. This final report addresses the objective of developing, testing, and implementing the computer model to simulate the water balance. The report describes the theoretical and empirical basis for the model, numerical implementation, input data requirements, and results from a model verification experiment. The report also describes implementation of the model to simulate the soil water balance of the field site. The description of implementation includes a description of the collection and analysis of site-specific field data needed to operate the model and comparison of simulated and measured evapotranspiration and profiles of soil water content.