『Abstract
　We determined erosion rates on timescales of 10¹-10⁴ years for two catchments in the northeastern Rhenish Massif, in order to unravel the Quaternary landscape evolution in a Variscan mountain range typical of central Europa. Spatially averaged erosion rates derived from in situ produced ¹⁰Be concentrations in stream sediment of the Aabach and Mohne（oの頭に¨） watersheds range from 47±6 to 65±14 mm/ka and integrate over the last 9-13 ka. These erosion rates are similar to local rates of river incision and rock uplift in the Quaternary and to average denudation rates since the Mesozoic derived from fission track data. This suggests that rock uplift is balanced by denudation, i.e., the landscape is in a steady state. Short-term erosion rates were derived from suspended and dissolved river loads subsequent to (1) correcting for atmospheric and anthropogenic inputs, (2) establishing calibration curves that relate the amount of suspended load to discharge, and (3) estimating the amount of bedload. The resulting solid mass fluxes (suspended and bedload) agree with those derived from the sediment volume trapped in three reservoirs. However, resulting geogenic short-term erosion rates range from 9 to 25 mm/ka and are only about one-third of the rates derived from ¹⁰Be. Model simulations in combination with published sediment yield data suggest that this discrepancy is caused by at least three factors: (1) phases with higher precipitation and/or lower evapotranspiration, (2) rare flood events not captured in the short-term records, and (3) prolonged periods of climatic deterioration with increased erosion and sediment transport on hillslopes.

Keywords: Cosmogenic nuclides; Erosion; Landscape evolution; Central Europe; River loads』

Introduction
Geological setting and description of the target catchments
Long-term erosion rates determined with ¹⁰Be
　Sample collection and preparation
　Quantification of erosion rates
Short-term erosion rates derived from river loads
　Sample collection and preparation
　Correcting for contributions not related to natural rock weathering
Determination of suspended load and estimation of the bedload
Discussion
　Comparison of long-term and short-term erosion rates in the Rhenish Massif
　Discrepancy between short- and long-term erosion rates
　Comparison of erosion rates in the Rhenish Massif to other studies in central Europe
　Implications for landscape evolution in central Europe
Conclusions
Acknowledgments
References