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III. Because there is a need to document the economic validity of the
remote sensing approach, it is recommended that carefully controlled
economic studies be done under full operational conditions and the
results should be compared with that of the regular non-remote sensing
procedure. Of course, it must be realized that both the ground and
remote sensing methods are not mutually exclusive, but simply complement
each other.
IV. It is also recommended that governments accept the economic respon-
sibility for remote sensing for vegetation damage.
V. It is recommended that a method be developed to provide detection
reliability estimates, and guidelines be stated to indicate the level of
accuracy that is needed for results to be acceptable to the user-
community.
VI. Because of the present state of the art and debates over which
procedure is best, it is recommended that a priority of film types and
photo materials be recognized for interpretation purposes. It is
suggested that a) results from color-infrared film be accepted before
results on normal-color film, b) results from original material be
accepted before results from duplicate materials, and c) results from
diapositives be accepted before results from paper prints. This priority
recognizes the need to use given film types in given situations, and is
designed to eliminate preferential value judgements with respect to
techniques.
VII. Finally, it is recommended the studies be done to determine "damage"
on a more refined basis such as "crop values" lost, rather than a simple
count of plant numbers lost.
Sometimes the original objectives of a project are not remem-
bered, and it should be recalled that the objective of remote sensing
for vegetation damage is to do the job, using the most feasible method,
as economically as possible, to produce results that are the most
socially acceptable, whether it is for an increased environmental quality.
or increased food production. It is believed that the remote sensing
technique meets these criteria. Therefore, in our scientific pursuits
and academic discussion, let us not forget our ultimate objective.