ations, and 
i] Complexes. 
Land. 
Land. 
ards, Nurseries, 
iltural Areas. 
ions. 
nd. 
Beaches. 
and Gravel 
Topography 
Relief 
Natural 
Vegetation 
Field Size 
& Shape 
Settlement 
Pattern 
Trans 
Net 
TABLE II 
LANDSCAPE ELEMENT VISIBILITY AS 
A FUNCTION OF ENVIRONMENT 
NORTHEAST 
STUDY AREA I 
Binary decision of hills/ 
mountains or valleys/low- 
lands; little variation; 
changes are generally 
subtle. 
Generally uniform in 
appearance; little change 
noticeable; tends to 
pervade entire area; a 
hinderance in identifying 
other landscape elements. 
Irregular shapes in 
numerous sizes but most 
are small; fields are 
non-uniform (mottled) in 
appearance and lack 
clarity/preciseness; 
fragmentation adds com- 
plexity & reduces 
identification confidence. 
Scattered, less predictable 
locations; difficult to 
confidently detect owing 
to vegetation cover; HV 
very important in veri- 
fying presence. 
Roads, railroads masked 
by vegetation; not easily 
discerned; power lines 
are identifiable as a 
result of contrast pro- 
duced by removing forest 
cover from line path. 
MIDWEST/WEST 
STUDY AREA II 
Number of contrasts; transi- 
tions of slope; variety of 
drainage networks, type and 
frequency of water bodies. 
Great diversity in amount 
of cover, patterns, loca- 
tion, frequency and 
distribution (partially a 
function of range in climate, 
soils, and moisture). 
Rectangular fields in 
continuous pattern or large 
areas of rangeland; field | 
appearance normally uniform 
and borders defineable. 
Regular or periodic in 
location, distinctive 
signatures easily dis- lu 
cerned; borders with 
surrounding area are | 
clear. | 
Roads, railroads readily IM 
visible, power lines | 
detectable by return from 
poles at times.