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註釋Conserving soil productivity. Soil erosion and civilization. Geologic erosion and sedimentation. Water erosion and sedimentation. Wind erosion and deposition. Predicting soil loss. Soil surveys and land use planning. Cropping systems. Tillage practices for conservation. Conservation structures. Vegetating mining and construction sites. Vegetating other areas of high erosion hazard. Pastureland, rangeland, and forestland management. Water conservation. Drainage of cropland. Irrigation and reclamation. Soil and water pollution. Economics of soil conservation. Soil and water conservation agencies in the United States. Soil and water conservation around the world.