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INTRODUCTION
We are in a period of dynamic revolution in the field of resource defini-
tion, analysis, and planning. Decisions made today must be based upon
today's resource situation. Old inventory systems took much time, were
inaccurate at best, and were obsolete before the resource planner
received them. This was acceptable 30 years ago when the impact of wrong
decisions was not readily discernible or as critical as they are today.
We are faced with finite resources with almost infinite demands which
allow very little margin for error. Our methods of inventory have lagged
behind other phases of planning for lack of sophisticated systems of
viewing the resources quickly, accurately, with reasonable cost, and,
most important, with means for repetition of the process within a short
time frame. LANDSAT has partially opened the door to such a system. The
satellite provides a remote platform from which we can continuously view
the Earth's resources. The satellite does not tell us what is viewed
without ground interpretation. This system shares a common flaw with
other systems in that a human must describe what is viewed. The sat-
ellite simply provides a signal based upon the total reflectivity of a
piece of the Earth's surface. This is then related to a combination of
known vegetation, water, and bare soil or rock. This known combination
must be located and described on-the-ground.
Classifying forest, range, and agricultural lands from LANDSAT satellite
computer tapes requires extensive and intensive "ground-truth." To
quantify and qualify the images for identifying specific areas and unite
as small as 1 pixel (1.1 acres or 0.45 hectares) in size, it has becos
increasingly necessary to gather spatially oriented and more pr cise
ground data. There is great need for new and improved "ground-truthing"
techniques to maximize the usability of the satellite data source for
intensive land management planning.
An acceptable land classification system for small area units has now
been achieved by collating and correlating various ground and aerial
imaging methods. These methods include a limited number of ground check
points, a large number of large-scale color infrared photographic strips