. Elements of ecology. Ecology. Soil-Group Divisions 87 accumulation of aluminum and iron generally in this soil-group divi- sion provides the derivation for the term "; In the region where the pedalfers exist there is generally sufficient rainfall for agriculture, but the soil tends to lose its nutrients. In the extreme podzol type the interaction of the climate and vegetation is such that solubles are rapidly carried away and the soil becomes progressively poorer and more acid, whereas in the chernozem soil fertility tends to be perpetuated. The contrast between the cher
. Elements of ecology. Ecology. Soil-Group Divisions 87 accumulation of aluminum and iron generally in this soil-group divi- sion provides the derivation for the term "; In the region where the pedalfers exist there is generally sufficient rainfall for agriculture, but the soil tends to lose its nutrients. In the extreme podzol type the interaction of the climate and vegetation is such that solubles are rapidly carried away and the soil becomes progressively poorer and more acid, whereas in the chernozem soil fertility tends to be perpetuated. The contrast between the cherno- COVER OF GRASSES AND HERBS Organic matter mixed with mineral soil TRUE SOIL (Neutral to { slightly alkaline). Lime (CaCog accumulation Fig. Schematic vertical section through a soil of the chernozem group as representative of the pedocal soil-group division. The subdivisions of the soil profile are indicated in relation to the vegetation and the movement of soil water. The depth scale is representative, but varies 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
