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erosion is regarded not merely as the physical removal of soil by water and wind, but rather as the ass deterioration of all the component parts of the habitat in Which man and his crops and livestock have to exist. Since there is no conclusive evidence for any major climatic in change in historic times to explain this deterioration, we must conclude that the eroding of the total environment has been due primarily to thoughtless destruction of the vegetative cover. This has led to deterioration of the micro climate above and below the surface, generally in the | direction of a general drying out of the soil which has exposed it to erosive action of wind and rainfall of high intensity or frequency, and to the loss of organic matter in the soil, thus reducing its capacity to resist erosion by conserving the water that falls on the surface, If everything Possible is done within the total environment to _conserve the naturally planted or cultivated vegetation, this will also sure optimal conservation of soil and water.
conservation of water that falls on the surface
resisting microclimate change
general drying out of the soil
conservation of soil and water
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