being the collected handouts from classes David King teaches at UCLA Extension and elsewhere...
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Wednesday, April 23, 2014
Greener Gardens: Site Analysis Homework
On your selected site, find at least the following:
Distance to Geographic Features - Use Google Maps, Google Earth, or a map and a ruler.
Watershed Plant Community and Soil Type Sun/Shade Slope Aspect Water Source You may add any of the other constraints listed in class.
Watershed - can be found here:
http://www.calflora.org/wgh.html Plant Community - can be found here:
http://www.laspilitas.com/comhabit/california_communities.html Slope - Slope can be expressed in either in degrees, percentage or ratio. If in degrees, horizontal is 0 degrees, vertical is 90 degrees.
Percentage is accomplished by measuring inches of fall in 100 inches. 2 inches of fall (measured downward from a level string) in 100 inches is 2% fall (or 2 cm of fall in 1 meter). Ratio is generally expressed in rise:run, so a 1:1 slope is one foot of rise to one foot of run. Rise is height, run is distance. A 1:1 slope is 45 degrees. Percentage is easiest for gentle slopes. Aspect - Which way does the slope face? If no slope, which way does the lot face?