What is not an example of a functional region?

A functional region also known as a nodal region is a region organized around a node or focal point. A functional region dominates at a central focus or node and diminishes in important outwards. This region is tied to central points of communication systems, transportation, by economic or functional associations.

Examples of functional regions include: Area of dominance of television station, circulation area of a newspaper, area served by a sport franchise and the market area of a super market.

The area dominated by a particular crop is not a functional region but a formal region. A formal region is an area which everyone shared similar characteristics. It can include production of a certain crop, cultural values, climate and weather patterns.