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标题：Veränderung bodenphysikalischer Eigenschaften von Humusauflagen auf ehemals flugaschebeeinflussten Waldstandorten der Oberlausitz
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作者：HARTMANN, P., FLEIGE, H., HORN, R
期刊名称：Waldökologie-Online
印刷版ISSN：1614-7103
出版年度：2009
卷号：2009
期号：08
出版社：Arbeitsgemeinschaft Forstliche Standorts- und Vegetationskunde (AFSV)
摘要：This study describes the influence of predominantly historical atmospheric depositions of lignite fly ashes upon physical properties of forest soils and especially of forest floor horizons. We compared 6 soil profiles with and without fly ash enrichment in the region Upper Lusatia, Eastern Germany. Fly ash enriched sites have a 1.0 to 1.5 dm thick and densely rooted top horizon consisting of a mixture of humus and fly ash. Uncontaminated forest floor horizons are less thick (<0,6 dm) and less rooted. Fly ash enriched forest floor horizons show higher air capacities, saturated conductivities and particle densities, whereas plant available water is reduced emission source close. Deposition rates were estimated at 150 to 280 t/ha, whereby at sites located close to the emission source the highest values were calculated. The vertical root development of the trees is constrained at locations characterized by temporary water logging and shallow soils with surface-near bedrock. Hence, properties of forest floor horizons and the mineral top soil condition plant available water in the effective root zone. Fly ash enriched forest floor horizons amount to 20 to 42% of plant available water in the effective root zone, whereas uncontaminated forest floor horizons only amount to 8 to 16%.