Effects of Forest Cover Manipulation on Water Yield as Studied by an Electric Analog

摘要

Review of a wide variety of hydrologic modeling procedures resulting in a conclusion that the methods of Riley, et al. (1966) were most suitable for general forest hydrology needs. A function generator is used to generate any type of a precipitation event. This precipitation event becomes an input into a series of storage and flow equations. Infiltration as a flow process described by the equation of Horton (1940) is analyzed in detail for influences of various input parameters. Solution of this type of problem is a good example of the utility of electric analogy in the solution of hydrologic problems. Continuous solutions over time may be visually displayed and the influence of changing coefficients studied quantitatively after correct initial scaling. Related aspects of this research are continuing. (Author)