The characterizations of polycyclic aromatic hydrocarbons (PAHs) compositions in the hydrological processes were examined in Camphor forest ecosystems, Zhuzhou, China. The concentrations of PAHs in rainfall above forest canopy, throughfall, stemflow, and surface runoff components were measured by gas chromatography (GC-HP6890). A total of 10 PAHs were detected in rainfall above canopy, and the number of the detected PAHs was 6 and 5 in throughfall and stemflow,respectively. The concentrations of total PAHs in rainfall above canopy was 288.6...