GVII-62 
PHOTOGRAMMETRIC ENGINEERING 
NATURAL VEGETATION FEATURES 
Scales of 1/70,000-1/30,000 
a. Outline bare areas and areas with natural vegetation. 
b. Outline areas of natural vegetation on the basis of those apparently used 
used by people or animals, and those not used by people or animals. 
c. Outline areas of forest, brush, and grass (excluding cultivated grass). 
d. Note the distribution of forest, brush, and grass in relation to drainage 
and surface configuration. 
e. For forests: 
1. Outline areas of evergreen and deciduous trees. 
2. Outline areas on basis of significant differences in tree height. 
3. Outline areas on basis of significant densities of stands. 
4. Outline areas on basis of differences in photographic texture of 
stands. 
5. Outline areas on basis of differences in photographic tone of stands. 
6. Outline areas on basis of the shape of stands (e.g., linear, partially 
rectangular, irregular). 
7. Outline areas on basis of repeating patterns of combinations of dis 
tributions, height, photographic texture and tone, and shape of 
stand. 7 
8. Outline areas of associations (e.g., oak-hickory, birch-beech-maple). 
9. Outline areas of genera (e.g., spruce, poplar). 
10. Determine general characteristics of undergrowth. 
f. For brush: 
1—7. Same as for forests 2-8. 
g. For grass: 
1-6. Same as for forests 2-7. 
Scales of 1/30,000-1/10,000 
h. Outline areas which appear recently changed from a naturally vegetated 
state (by clearing, by burning, or by disease). 
j. Outline areas of species of trees. 
k. Outline areas of associations of brush and grass. 
Scales larger than 1/10,000 
l. Determine detailed characteristics of individual trees (e.g., volume of 
lumber, amount of growth). 
m. Outline areas of species of brush and grass. 
AGRICULTURAL FEATURES 
Scales of 1/70,000-1/30,000 
a. Outline areas of cultivated land. 
b. Outline areas of fenced uncultivated land. 
c. Outline areas of unfenced, uncultivated land which is probably used by 
animals. 
d. Outline farmsteads and note general pattern of distribution (e.g., 
agglomerated, dispersed). 
e. Outline general areas of extensive and intensive agriculture. 
7 It is particularly advisable that beginning interpreters with no botanical experience be en 
couraged at first to classify vegetation on the basis of only the combined photographed character 
istics, and then to learn and use the common and Latin names of the association and genera as a 
separate stage of identification.