Effect of Forest Fires on Water Extractable Organic Matter and Polycyclic Aromatic Hydrocarbons in Soils
The studied area is located in the Maures Mountains, in the south-east of France. The sampling of different plots (C, NO, FO, NR and FR) at two depths (A and B) makes it possible to evaluate the effect of both frequency of fires and date of the last event on two horizons of the soils. This work aimed to assess the potential of forest fire to affect the water extractable organic matter (WEOM) and to be a significant source of polycyclic aromatic hydrocarbons (PAHs). The impact of fire on the organic carbon concentrations in WEOM is detectable more than 16 years after the last fire, but a beginning of the reconstruction of the top of the soil is observed. After a recent fire, the organic carbon concentrations of the two horizons are homogenized. The frequency of the fire appears to be a less important factor than the date of the last event on the WEOM amount. The aromaticity and the AET/ABZ indexes indicates a similar global aromaticity of the compounds in the soils studied with a presence of less substituted aromatic rings in the fractions of recently burned soil. Concerning the 16 EPA-PAHs, they are at trace levels in these soils but a recent fire generates PAHs in particular Naphtalene, Fluorene, Phenanthrene, Anthracene and Fluoranthene.
forest fires soil water extractable organic matter PAHs
A. VERGNOUX L. MALLERET M. DOMEIZEL F. THERAULAZ P. DOUMENQ
Université Paul Cézanne Aix-Marseille 3. Laboratoire de Chimie Analytique de lEnvironnement. UMR CN Université Paul Cézanne Aix-Marseille 3. Laboratoire de Chimie Analytique de lEnvironnement. UMR CN Université de Provence Aix-Marseille 1. Laboratoire de Chimie et Envrionnement. FRE 2704. 3 pl. Vict Université de Provence Aix-Marseille 1. Laboratoire de Chimie et Envrionnement.FRE 2704. 3 pl. Victo
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）