FUZZY Models as Part of Dynamic Models

In traditional ecological models the differential equations contain algebraic expressions. For example, the evolon model can be used to illustrate that:

This model describes a growth process (such models are used to model the growth of agricultural crops in soil-water-nitrogen simulations), which is controlled by the growth constant Kthe saturation constant B. The k is used to model a positive or negative influence of interaction in the population. In a plant growth model a monoculture can reduce k for example. For a concrete modeling task it is difficult to estimate these parameters. The use of a fuzzy model can help determine these parameters. The saturation parameter B depends on the soil quality s, the amount of fertilizer f and the water availability w. Using expert knowledge B could be expressed as

[l8l

Similar procedures can be applied to the other parameters. The advantage of this approach is that the parameters can be interpreted and understood. This is the key for adaptation and stepwise refinements. An implementation of interactive software toolbox combining fuzzy-model development and dynamic-system simulation offers new possibilities in the modeling of ecological problems.

Project Earth Conservation

Project Earth Conservation

Get All The Support And Guidance You Need To Be A Success At Helping Save The Earth. This Book Is One Of The Most Valuable Resources In The World When It Comes To How To Recycle to Create a Better Future for Our Children.

Get My Free Ebook


Post a comment