Fig 1.3 Spatial correspondence in the tropics between
broad categories of climate, vegetation, and soils. Climate
from Trewartha; vegetation after Eyre, Ku ¨chler, and
others; soils based on numerous sources including Soil
Conservation Service. From Physical Elements of
Geography, 5th ed., by Glenn T. Trewartha, Arthur H.
Robinson, and Edwin H. Hammond, Frontispiece, Plate 5,
Plate 6. Copyright # 1967 by McGraw-Hill Inc.
Reproduced by permission of McGraw-Hill, Inc.
Fig. 1.4 Global pattern of the warm continental ecoregions
1.2 Need for a Comparative System of Generic Regions
3