USE OF RADIOACTIVE FALLOUT CESIUM-137 AND GEOCHEMICAL ELEMENTS TO TRACE SEDIMENT SOURCE IN A SUB-CATCHMENT SCALE

摘要

Soil erosion and sediment-related environmental problems pose a serious threat to land management sustainability and water resources utilization in many countries. Traditional methods used to study soil erosion are time consuming and the results obtained for an experimental plot are usually incomparable with one another (Poreba, 2006). The use of radionuclides to measure soil erosion overcomes some of the limitations of the traditional methods. The fallout radionuclide ccsium-137 ((137)Cs) has been successfully used in soil erosion studies worldwide (Li et al., 2009).