Environmental Science 12th Edition by William Cunningham,Mary Ann Cunningham

Exercise 18

Figure 13.32 on p. 291 is a form of graphic representation we haven t used very often in this book. It's a concept map, or a twodimensional representation of the relationship between key ideas. It could also be considered a decision flowchart because it's an organized presentation of different policy options. This kind of chart shows how we might think about a situation, and suggests affinities and associations that might not otherwise be obvious. You might like to look at the introductory chapter of this book for more information about concept maps.

A model of ecosystem degradation and potential management options.
Source: Data from Walker and Moral, 2003.
There are two arrows labeled "reallocation" in this diagram. One leads to "new uses," while the other leads to "new ecosystem." What's the difference Why are the two boxes separated in the diagram