(Article of periodic en Anglais - 2014)

Document title

Modeling the functional influence of vegetation type on streambank cohesion

Authors(s) and Affiliation(s)

POLVI L.E. (1 2) ; WOHL E. (2) ; MERRITT D.M. (3 4) ;
(1) Landscape Ecology Group, Dept. of Ecology and Environmental Science, Univ., Umeå, SUEDE
(2) Dept. of Geosciences, Colorado State Univ., Fort Collins, ETATS-UNIS
(3) United State Forest Service Watershed, Fish, Wildlife, Air and Rare Plants, Fort Collins, ETATS-UNIS
(4) Natural Resource Ecology Lab., Colorado State Univ., Fort Collins, ETATS-UNIS


The AA. present functional differences of bank-stabilizing root characteristics and added cohesion, with vegetation categorized as woody and non-woody and by the vegetation groups of trees, shrubs, graminoids, and forbs. They analyzed root morphology and tensile strength of 14 species common to riparian areas in the southern Rocky Mountains, in field sites along streambanks in the montane and subalpine zones of the Colorado Front Range. Using the vegetation root component (RipRoot) of a physically-based bank stability model (BSTEM), they estimated the added cohesion for various sediment textures with the addition of each of the 14 species. Significant differences exist between woody and non-woody vegetation and between the 4 vegetation categories with respect to the coefficient of the root tensile strength curve, lateral root extent, and maximum root diameter. Tree roots add significantly more cohesion to streambanks than forb roots. Additionally, rhizomes may play an important role in determining the reach-scale effects of roots on bank stabilization


Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no9 [pp. 1245-1258]

Bibliographic references : 2 p.

Collation : 8 fig., 5 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3577

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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