. Introduction to botany. Botany. 326 INTRODUCTION TO BOTANY Rapidly running surface water often carries away part or all of the fertile soil.^ In grasslands, meadows, and forested areas surface water is retarded in its rate of flow, and conse- quently does not carry away much soil. In regions that were once forested and from which the timber has now been largely. Fu;. 239. Erosion of the soil following removal of the forest This land was covered with a heavy pine forest and had a rich soil, which was held upon the forest floor. When the timher was removed, erosion soon cut ditches through the
. Introduction to botany. Botany. 326 INTRODUCTION TO BOTANY Rapidly running surface water often carries away part or all of the fertile soil.^ In grasslands, meadows, and forested areas surface water is retarded in its rate of flow, and conse- quently does not carry away much soil. In regions that were once forested and from which the timber has now been largely. Fu;. 239. Erosion of the soil following removal of the forest This land was covered with a heavy pine forest and had a rich soil, which was held upon the forest floor. When the timher was removed, erosion soon cut ditches through the pasture land, and part of the rich soil was washed away removed, the surface water soon erodes ditches (fig. 239), which, with rapidly deepening channels and developing tribu- taries, will in a few years carry away much of the fertile soil of the forest floor. After forest fires, which themselves destroy much of the humus of the forest soils, the surface water, which is no longer retarded and absorbed by humus, flows 1 " Soil Erosion," Bulklin 71, Bureau of Soils, Dept. Agr., 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York, [etc. ] Ginn and company
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