Untersuchungen über die Freisetzung der Bioelemente aus der organischen Substanz der Humusauflage in einem Buchenbestand

Investigations on the Transfer of Bioelements from Organic Matter to Soil Solution in the Humus Layer of a Beech Stand Monthly and annual fluxes of bioelements were measured in two levels: (a) at the soil surface (= input) and (b) at the lower boundary of the humus layer (= output) by determination of amount and concentration of the precipitation (canopy drip), of the litter and of the seepage. Seepage was collected with funnel lysimeters. By comparison of both fluxes (input-output-analysis) for some bioelements mathematical equations could be derived which describe the transfer of these elements from organic matter to soil solution. The results are explained as consequence of the different bonds of the elements in leaf tissues and in humus substances.