Schätzung des C-Faktors aus Fruchtartenstatistiken für Ackerflächen in Gebieten mit subkontinentalem bis subatlantischem Klima nördlich der Alpen (Kurzmitteilung)

There is a need to estimate the land-use induced erosion risk (C factor of the Universal Soil Loss Equation) from averaged crop data, which is mostly the only available information on county-scale and larger scales. Such an equation was developed. It proved superior than the previously used, additive procedure. The mean absolute error in 600 Monte-Carlo simulations was only 1.6% of bare fallow soil loss. Slightly modified by neglecting the intercept, the equation also allows for a first, easy C-factor estimation of individual rotations, e.g. for organically managed farms with typically complex rotations, which are otherwise time-consuming to calculate.