Environmental stochasticity controls soil erosion variability

Verfasser / Beitragende:
[Jongho Kim, Valeriy Y. Ivanov, Simone Fatichi]
Ort, Verlag, Jahr:
2016
Enthalten in:
Scientific Reports, 6, p. 22065
Format:
Artikel (online)
ID: 528786628
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024 7 0 |a 10.3929/ethz-b-000113969  |2 doi 
024 7 0 |a 10.1038/srep22065  |2 doi 
035 |a (ETHRESEARCH)oai:www.research-collecti.ethz.ch:20.500.11850/113969 
100 1 |a Kim  |D Jongho 
245 1 0 |a Environmental stochasticity controls soil erosion variability  |h [Elektronische Daten]  |c [Jongho Kim, Valeriy Y. Ivanov, Simone Fatichi] 
246 0 |a Sci Rep 
506 |a Open access  |2 ethresearch 
520 3 |a 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. 
540 |a Creative Commons Attribution 4.0 International  |u http://creativecommons.org/licenses/by/4.0  |2 ethresearch 
700 1 |a Ivanov  |D Valeriy Y.  |e joint author 
700 1 |a Fatichi  |D Simone  |e joint author 
773 0 |t Scientific Reports  |d London : Nature Publishing Group  |g 6, p. 22065  |x 2045-2322 
856 4 0 |u http://hdl.handle.net/20.500.11850/113969  |q text/html  |z WWW-Backlink auf das Repository (Open access) 
908 |D 1  |a Journal Article  |2 ethresearch 
950 |B ETHRESEARCH  |P 856  |E 40  |u http://hdl.handle.net/20.500.11850/113969  |q text/html  |z WWW-Backlink auf das Repository (Open access) 
950 |B ETHRESEARCH  |P 100  |E 1-  |a Kim  |D Jongho 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Ivanov  |D Valeriy Y.  |e joint author 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Fatichi  |D Simone  |e joint author 
950 |B ETHRESEARCH  |P 773  |E 0-  |t Scientific Reports  |d London : Nature Publishing Group  |g 6, p. 22065  |x 2045-2322 
898 |a BK010053  |b XK010053  |c XK010000 
949 |B ETHRESEARCH  |F ETHRESEARCH  |b ETHRESEARCH  |j Journal Article  |c Open access