This example simulation demonstrates the effects of land-use decisions from
the years 1986-1991 on the western North Carolina (Macon County) landscape
for 100 years beyond 1991.
After the simulation has completed, the GRASS monitor containing both
the
original land-cover and the final transition land-cover maps
is displayed (see Figure
).
It is difficult to tell for certain from the final land-cover map
how the amount of each landcover type has changed during the
simulation. To analyze the result of the simulation, graphs of the
statistics are displayed.
A Graphs window (see Figure
)
is displayed after the simulation has completed in
order to allow the user to observe trends in desired statistics.
Several graphs are displayed in this example, including:
Figure: GRASS monitor of completed simulation.
From the proportion of landscape graphs (see Figures
and
),
it can be observed that the proportion of unvegetated
land cover increases from less than 1 percent to nearly 2 percent of
the land being unvegetated in
the year 2091. The proportion of the landscape covered by forest
decreases by 1 percent in the 100 year simulation. The
area of covertype graph
(see Figure
) indicates that approximately
1000 hectares of landscape transitions to unvegetated landcover during the
simulation.
Figure: Proportion of Unvegetated Landscape.
Figure: Proportion of Forest Landscape.
Figure: Area of Unvegetated Landscape.