ATLAS OF AMERICAN AGRICULTURE 
UNITED STATES 
BUREAU OF p 
FOREST ! 
NATURAL ^ 
Grassland and Des 
Forest Vegetation 
■River 
1111111 
iifessS 
Scot! 2 
.Horth 
'alhart, 
Amarillo 
FOREST VEGETATION (WESTERN) 
YELLOW PINE—DOUGLAS FIR (WESTERN PINE FOREST) 
Yellow pine—Sugar pine - ~ 
Lodgepole pine 
PI NON- 
WOODLAND) 
ROCKY MOUNTAINS 
15000 Ft. 
14000 •' 
13000 " 
12000 
11000 '• 
10000 •' 
9000 ■■ 
8000 " 
7000 " 
6000 •' 
5000 ■' 
4000 •• 
3000 ■■ 
2000 '• 
1000 •• 
T profi le zuxunTn 
CHARACTER OF VEGETATION ALONG PARALLEL 39.N. 
Harvard t Peak 
Pikes Peak 
SHOWING 
SIERRA NEVA 3A 
Green R 
Figure 2.- Distribution of the main types of natural vegetation in the United States, 
subdivisions there are many smaller distinct types not indicated on the map. Four-fifths 
The forest 
falls into two cl« 
The three major natural divisions of vegetation in the United States are forest, grassland, and desert shrub _ 
of the forest was originally in the east. Of this original forest there remains Lu, 1, T L b . u e nt hav 
equally divided between the Rocky Mountains and the Cascade, Sierra Nevada, and Coast Ranges, and still includes nearly all its original area. The grassland vegetation ° per ^ entm vlrgi " condltlon ’ . tQ three 
map indicates the great diversity of vegetation, as well as the value of the natural vegetation of the country. A comparison of this map with that of acreage of all croDs (fio &\ • h- su ' 3dlvlsl0ns and the d ® s ®!’ t f th rern ain 
B ui on crops frig. 4) indicates also the agricultural potentialities or me ^ 
