(Article of periodic en Anglais - 2013)

Document title

Slope control on the frequency distribution of shallow landslides and associated soil properties, North Island, New Zealand

Authors(s) and Affiliation(s)

DE ROSE R.C. (1 2) ;
(1) Hokkaido Univ., Sapporo, JAPON
(2) Landscape Research, Palmerston North, NOUVELLE-ZELANDE


It is shown in this study, that by identifying the main driver for spatial variability in shallow landslide erosion at field scales, namely slope angle, it is possible to develop a set of generic functions for assessing the impact of landslides on selected soil properties at larger spatial scales and over longer time periods. Research was conducted within an area of pastoral soft-rock Tertiary hill country in the North Island of New Zealand. Integrating landslide densities with soil recovery data demonstrates that the average value of a soil property fluctuates in a "saw-tooth" fashion through time with the overall shape of the curve controlled by the frequency of landslide inducing storm events and recovery rate of the soil property between events. Despite such fluctuations, there are gradual declines of total carbon content of topsoil and soil depth to bedrock, since the time of forest clearance. Results have application to large-scale sediment budget and water quality models and to the New Zealand Soil Carbon Monitoring System (CMS)


Article of periodic

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

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

Millesime : 2013, vol. 38, no4 [pp. 356-371]

Bibliographic references : 2 p.

Collation : 10 fig., 3 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3283

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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