then sees little relationship between his prob- 
lem and the practical application of a compli- 
cated array of sensors, and he concludes that 
assist him with his inventory problem. How- 
ever, remote sensing research can equip the 
remote sensing is far too complex and costly to 
range and wildlife manager with a knowledge 
of remote sensing problems as well as poten- 
tialities, so that he can better understand 
where, when, and how remote sensing can be 
used effectively as a tool for resource inventory 
and management. In addition, the user ought 
not assume that any one management activity 
will have to bear the cost of the whole sys- 
tem, for the benefits of remote sensing to the 
forester, agriculturist, hydrologist, geologist, 
and recreation planner also appear large in- 
deed. 
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FIGURE 5.—These two aerial photographs of Harvey Valley Range, Lassen National Forest, Calif., show the 
different energy responses of range features in two bands of the electromagnetic spectrum. Notice the ease of 
detecting meadow vegetation at A, standing water from a spring at B, low sagebrush type at C, and other 
vegetation-soil boundaries at D. Also compare this range area with the corresponding range area as seen in 
color plate I, and figures 4, 6, and 7. The top photo was obtained with Plus-X Aerographic film (type 2401) with 
a minus-blue filter (0.5-0.7 microns). The bottom photo was obtained with Infrared Aerographic film (Type 
5424) with an 89B filter (0.7-0.9 microns). 
175 
