The former group of techniques is used to assess the magnitude of soil erosion and the impact of soil conservation measures on soil erosion, while the latter helps identify sediment sources and ...

which can be controlled through efficient soil conservation practices. Land degradation currently affects 1.9 billion hectares globally or about 65 per cent of global soil resources. With 85 per cent, ...

Dr. Hugh Hammond Bennett (left) first Chief of the Soil Conservation Service and Mr. Roach Stewart (Duke Power Co.) In the early years of the 1930s, the extent of the damage inflicted on the ...