Oxidation Rate of Sulphite on Decomposing Leaf Litter

Authors : Şükrü Dursun Lynne BODDY

Pages : 365-370

View : 9 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Sulphite insert ignore into journalissuearticles values(SO32-);, the major solution product of SO2, has been shown to inhibit leaf litter decomposition at concentrations occurring in urban rainfall. The rate of oxidation of SO2-3 on leaf litter is a major factor in determining the effect of this inhibition and this study investigated the oxidation rate of SO2-3 to sulphate insert ignore into journalissuearticles values(SO2-4); when applied to decomposing Scots pine insert ignore into journalissuearticles values( Pinus sylvestris L.); needle litter under laboratory conditions. Measurements showed that SO2 has a short life under atmospheric conditions and oxidises very quickly in the presence of metal ions and in alkaline conditions. After addition of sulphite insert ignore into journalissuearticles values(0.1 mM SO2-3); to Scots pine litter, about 80% of the SO2-3 oxidised in 5 h, and SO2-3 was not detected after 24 h. The time period over which SO2-3 underwent oxidation at environmentally-realistic concentrations was sufficient to affect microbial decomposition processes in soil and leaf litter.
Keywords : Leaf Litter, Scots Pine, Sulphite Measurement, Sulphite Oxidation