. Elements of ecology. Ecology. Tall grass Short grass Mesquite I I Desert Hjlj Forest KM^ Arid Woodland Modified from the Graphic Summary of American Agriculture, U. S. Department of Agriculture Fig. The distribution of the natural vegetation in the United States. if we again leave out of account the mountain and coastal regions (Fig. ). Similarly, no good correlation will be found between the occurrence of these principal zones of vegetation and the annual precipitation taken by itself. As already explained, regional dif- ferences in evaporation must also be considered, and water l
. Elements of ecology. Ecology. Tall grass Short grass Mesquite I I Desert Hjlj Forest KM^ Arid Woodland Modified from the Graphic Summary of American Agriculture, U. S. Department of Agriculture Fig. The distribution of the natural vegetation in the United States. if we again leave out of account the mountain and coastal regions (Fig. ). Similarly, no good correlation will be found between the occurrence of these principal zones of vegetation and the annual precipitation taken by itself. As already explained, regional dif- ferences in evaporation must also be considered, and water loss in turn depends in part on temperature. Both the supply and the loss. Desert Plains Prairie Forest Fig. Schematic representation of the four fundamental vegetational zones in central United States (from This is Our World by Sears, 1937, Univ. of Oklahoma Press).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Clarke, George L. (George Leonard), 1905-. New York, Wiley
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Keywords: ., bookcentury1900, bookpublishernewyorkwiley, booksubjectecology
