caa a22 4500 528786628 20181217030316.0 cr unu---uuuuu 180924e20160301xx s 000 0 eng 10.3929/ethz-b-000113969 doi 10.1038/srep22065 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/113969 Kim Jongho Environmental stochasticity controls soil erosion variability [Elektronische Daten] [Jongho Kim, Valeriy Y. Ivanov, Simone Fatichi] Sci Rep Open access ethresearch Understanding soil erosion by water is essential for a range of research areas but the predictive skill of prognostic models has been repeatedly questioned because of scale limitations of empirical data and the high variability of soil loss across space and time scales. Improved understanding of the underlying processes and their interactions are needed to infer scaling properties of soil loss and better inform predictive methods. This study uses data from multiple environments to highlight temporal-scale dependency of soil loss: erosion variability decreases at larger scales but the reduction rate varies with environment. The reduction of variability of the geomorphic response is attributed to a ‘compensation effect': temporal alternation of events that exhibit either source-limited or transport-limited regimes. The rate of reduction is related to environment stochasticity and a novel index is derived to reflect the level of variability of intra- and inter-event hydrometeorologic conditions. A higher stochasticity index implies a larger reduction of soil loss variability (enhanced predictability at the aggregated temporal scales) with respect to the mean hydrologic forcing, offering a promising indicator for estimating the degree of uncertainty of erosion assessments. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Ivanov Valeriy Y. joint author Fatichi Simone joint author Scientific Reports London : Nature Publishing Group 6, p. 22065 2045-2322 http://hdl.handle.net/20.500.11850/113969 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/113969 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 100 1- Kim Jongho ETHRESEARCH 700 1- Ivanov Valeriy Y. joint author ETHRESEARCH 700 1- Fatichi Simone joint author ETHRESEARCH 773 0- Scientific Reports London : Nature Publishing Group 6, p. 22065 2045-2322 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access