Sediment Fingerprinting in Nested Watersheds Cropped to Eucalyptus

摘要

Commercial eucalyptus forests provide surface litter and canopy for partial soil protection and erosion control. Identifying sediment sources in a watershed is essential to accurately target management actions designed to reduce sediment delivery to water bodies. We examine the effect of two particle sizes and locations of potential sediment sources on their contribution to sediment yield.Geochemical properties, determined by inductively coupled plasma mass spectrometry and X-ray fluorescence analyses, were employed to calculate proportional contributions of sediment in a watershed (0.98 km2) and in a sub-watershed (0.39 km2) cropped to commercial eucalyptus (Figure la) by using a sediment fingerprinting approach.