26 REPORT OF COMMISSION VII
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PART 11: SUMMARY OF.WORLD PROGRESS IN PHOTO.
INTERPRETATION IN NATURAL RESOURCE
INVENTORIES
K. E. Bradshaw, U. S. Forest Service, Berkeley, California
INTRODUCTION
HE trend towards fuller and more adequate utilization of aerial photos
is as apparent in the field of natural resource inventories, as in the many
other diverse activities, such as engineering and science and warfare. The wide
adaptation of techniques of photogrammetry and photo-interpretation to in-
ventorying is a relatively recent story in the history of use of aerial photographs.
This is partially due to the fact that inventories require extensive photo cover-
age. In many parts of the world, the bulk of the coverage that we now have
was obtained during the past twenty years or so. Then too, the inherent reluc-
tance to change established inventorying procedures, and the inadequacy of
research efforts designed to develop and improve techniques and procedures,
has been a deterrent to the adoption of aerial inventories.
The startling advances made in photography and photogrammetry during
and following World War II have opened new doors to those responsible for
measuring and analyzing natural resources. Great advancements have been
made already, and only the most visionary of those who work with photos
dare to speculate on what the future may bring. The age of photography is
old, in terms of decades, but it is still young in terms of potentialities. Photo-
grammetrists and interpreters of today are in the midst of an excitingly fast-
moving activity. It is wide open for opportunities in research, and moreover
is so practical and so needed that often the demands for its services are far in
advance of its ability to fulfill them.
In considering only the field of natural resource inventories, we can see the
huge demand for inventories which has been created on a world-wide basis by
the economics and politics of the post-war period. This generation no longer
thinks in terms of provinces, or countries, as it might have before. International
cooperation and unification has brought us to the point of thinking of continen-
tal and world populations, and exchanges of resources necessary to support
those populations.
