Image Processing Reference
In-Depth Information
Outdoor Activities
Select a plot, such as the student's home lot, for the following activities:
Observe and list several types of vegetation, impervious surface, and exposed
Group the subsets together as V, I, and S, and estimate the percent cover of
each, summing to 100%.
Place the results on the V-I-S ternary diagram.
Repeat the above steps for a nearby school ground and compare the two sites:
Which produces greater storm runoff and why?
Which cover types change temperatures the most, the least, from day to night
and why?
Select a routing for a driving transect from the city center to the outlying un-
urbanized environment. With a data sheet (constructed in tabular form) in hand,
beginning at city center, drive the route, stopping at one-kilometer intervals and
record the V-I-S composition (summing to %) as visible from the roadside. At
each stop also state the dominant land use. Mark and number the stopping points
on a map and your data sheet.
Observing your table of data, write a brief statement about changing V-I-S com-
position along the route, considering the general trend and any anomalies.
Write a paragraph explaining the association of changing V-I-S values with
land use observed along the way.
Back in the classroom or lab, compare your transect with that of other students
who took a different route. Together create a schematic of zones of land use
around the city center. Generalize the V-I-S proportions per zone and record them
on the schematic diagram, and on a map of the city.
Study Questions
Define an ecosystem and explain the urban/peri-urban environment as an eco-
system with examples from personal experience.
Identify and list 12-15 urban/peri-urban land cover types and group them into
V-I-S categories.
Explain how spatial resolution affects mapping of V-I-S patterns in urban/peri-
urban areas.
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