The variability of root cohesion as an influence on shallow landslide susceptibility in the Oregon Coast Range

@article{Schmidt2001TheVO,
  title={The variability of root cohesion as an influence on shallow landslide susceptibility in the Oregon Coast Range},
  author={K. M. Schmidt and J. Roering and J. Stock and W. Dietrich and D. Montgomery and Torsten Schaub},
  journal={Canadian Geotechnical Journal},
  year={2001},
  volume={38},
  pages={995-1024}
}
Decades of quantitative measurement indicate that roots can mechanically reinforce shallow soils in forested landscapes. Forests, however, have variations in vegetation species and age which can dominate the local stability of landslide-initiation sites. To assess the influence of this variability on root cohesion we examined scarps of landslides triggered during large storms in February and November of 1996 in the Oregon Coast Range and hand-dug soil pits on stable ground. At 41 sites we… Expand
Topographic and ecologic controls on root reinforcement
Shallow landslides are a significant hazard in steep, soil-mantled landscapes. During intense rainfall events, the distribution of shallow landslides is controlled by variations in landscapeExpand
Shallow landsliding, root reinforcement, and the spatial distribution of trees in the Oregon Coast Range
The influence of root reinforcement on shallow landsliding has been well established through mechanistic and empirical studies, yet few studies have examined how local vegetative patterns influenceExpand
Biotic controls on shallow translational landslides
In undisturbed tropical montane rainforests massive organic layers accommodate the majority of roots and only a small fraction of roots penetrate the mineral soil. We investigated the contribution ofExpand
Root cohesion of forest species in the Italian Alps
Forests can prevent and/or mitigate hydrogeomorphic hazards in mountainous landscapes. Their effect is particularly relevant in the case of shallow landslides phenomena, where plants decrease theExpand
Modelling root demography in heterogeneous mountain forests and applications for slope stability analysis
Background and aimsPlant roots provide mechanical cohesion (cr) to soil on slopes which are prone to shallow landslides. cr varies in heterogeneous natural forests due to the spatial, inter- andExpand
Evidence for biotic controls on topography and soil production
article soils hillslopes biology trees radar The complex interplay of biological, physical, and chemical processes in pedogenesis and hillslope evolution limits our ability to predict and interpretExpand
Significance of tree root decomposition for shallow landslides
Tree-root systems can prevent shallow landslides. In layers permeated by roots, the soil shows greater stability as roots are able to absorb forces. When protective forests die off extensively as aExpand
THE INFLUENCE OF VEGETATION ROOTS ON SLOPE STABILITY IN LANDSLIDE SUSCEPTIBLE AREAS
Slope protection against shallow landslides using vegetation has been widely applied in civil and environmental engineering throughout the world, but its root role in slope stability has not beenExpand
Effects of plant roots on soil shear strength and shallow landslide proneness in an area of northern Italian Apennines
In areas with similar soil properties and geomorphological conditions, different land uses could promote or reduce the failure probability towards shallow landslides, especially due to differences inExpand
Grapevine root system strength in an area susceptible to shallow landslides for slope stability assessment
During the last few years, several rainfall-induced shallow landslides affected the Oltrepo Pavese (northern Italy) hilly slopes cultivated with vineyards, causing in many cases the destruction ofExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 146 REFERENCES
The role of woody vegetation in stabilizing slopes in the Cincinnati area, Ohio
Tree roots markedly stabilize colluvium on steep hillsides in the Cincinnati area, Ohio, according to detailed analysis of a landslide complex on the south side of Rapid Run Creek, a tributary of theExpand
Effects of root reinforcement on soil-slip patterns in the Transverse Ranges of southern California
Effects of roots on soil slippage were investigated on unstable hillsides covered by chaparral, prescription-burned chaparral, and grassland in the Transverse Ranges of southern California. DirectExpand
A conceptual model of changes in root cohesion in response to vegetation management.
Cohesion contributed by plant root systems is an important factor in determining the stability of steep, vegetated slopes subject to shallow landslides. The effects of vegetation removal on rootExpand
Influence of soil aggregation on slope stability in the Oregon Coast Ranges
Two major cohesionless soil series of the central Coast Ranges of Oregon were examined for soil and hydrologic properties. Although derived from different parent material, the Bohannon and KlickitatExpand
Roots and the stability of forested slopes
Root decay after timber cutting can lead to slope failure. In situ measurements of soil with tree roots showed that soil strength increased linearly as root biomass increased. Forests clear-felled 3Expand
Size and location of colluvial landslides in a steep forested landscape
An inventory of 61 landslide scars in part of the central California Coast Ranges is used to document sites of instability and to infer conditions necessary for failure. Scar dimensions clusterExpand
Soil movements on permafrost slopes near Fairbanks, Alaska
Many north-facing slopes in the Yukon–Tanana Uplands of Alaska show signs of downhill movements in the form of hummocky surface and leaning trees. Measurements of movements and pore pressures wereExpand
The importance of root strength and deterioration rates upon edaphic stability in steepland forests
The additional strength provided by roots to the soil is generally considered to be in the form of a cohesive strength hC which may range in magnitude from 1 kPa to 20 kPa. Studies of the tensileExpand
Patterns of fine root mortality in two sugar maple forests
TLDR
It is reported here that roots in the northern forest consistently lived the longest, principally owing to greater rates of mortality early in the life of roots at the southern site, and differences in site factors suggest that warmer soil temperatures seem to be associated with the more rapid death of Roots at theSouthern site. Expand
Strength of tree roots and landslides on Prince of Wales Island, Alaska
The stability of slopes before and after removal of forest cover was investigated. Porewater pressures and shear strengths were measured and the soil properties were determined by laboratory and it1Expand
...
1
2
3
4
5
...