Biogeochemical Redistribution of Industry-Caused Sulphur in an Urban Ecosystem

Sulphur content in the system woody plants–forest litter–soil (the profile-genetic level) was investigated within the boundaries of the urban territory. High accumulation of total sulphur in the needles and leaves of tree species was demonstrated. A substantial depositing ability of the forest litter, upper organicsaccumulating and texture horizons of urban soil with respect to the industry-caused sulphur compounds was discovered. A close connection between the sulphur content of tree needles (leaves) and forest litter, as well as the soil profile, was revealed. It was demonstrated that sulphur accumulation in assimilation organs of plants and its physicochemical redistribution in the soil profile might serve as the ground for the adequate evaluation of the degree of industrial load on an urban ecosystem.