The study of detachment and deposition on a hillslope using a magnetic tracer

Ventura, Eusebio; Nearing, M. A.; Amore, Elena; Norton, L. D.

doi:10.1016/s0341-8162(02)00003-6

Cited by 36 publications

(19 citation statements)

References 9 publications

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“…Differences in the magnetic susceptibility profi les along a transect can be a valuable tool in identifying the pattern of soil movement and relating it to hillslope processes. A magnetic tracer and measurements of magnetic susceptibility have identifi ed areas of net detachment and deposition in experimental fi eld plots (Ventura et al, 2001(Ventura et al, , 2002.…”

Section: Magnetic Susceptibility Of the Reference Soilsmentioning

confidence: 99%

Using magnetic susceptibility to assess soil degradation in the Eastern Rif, Morocco

Sadiki¹,

Faleh

Izquierdo

et al. 2009

Earth Surf Processes Landf

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The soil in the Rif, Morocco, is at serious risk because increasing anthropogenic pressures are gradually transforming large natural areas into farmland. The distribution of magnetic minerals within the soil profi le can be used to assess soil development and degradation. The soils in the study area are severely eroded because of a combination of highly erodible soils, intense rainstorms and scarce vegetation cover. To sample of representative soil profi les, lithology, slope gradient and land use were considered. The ranges of magnetic susceptibility in the soil profi les distinguished between two primary soil groups. Magnetic susceptibility varied in the soil profi le and along the soil toposequence, and the variations were related to the differences in the original magnetic composition and the infl uence of main erosion factors. Lithology is the main factor contributing to the variation in magnetic susceptibility. The magnetic susceptibility values in soils on Tertiary marls (χ = 13·5 × 10 −8 m 3 kg) differed significantly from those on Quaternary terraces (χ = 122·1 × 10 −8 m 3 kg −1). Slope affected the distribution of magnetic susceptibility because of the continuous loss of topsoil in some parts of the slope and the deposition of eroded soil in others. Elimination of the natural vegetation cover and a shift to cultivated land for cereals has had a negative impact on soil development and, on similar slopes and substrates, magnetic susceptibility decreased signifi cantly in cultivated soils. The soils on steep slopes that had natural vegetation cover retained the magnetic minerals better than did those on gentler slopes that were under cultivation. Grazing, clearing and, especially, tilling has weakened the soil and made it much more vulnerable to erosion. An analysis of the main factors causing erosion will help to promote rational use of the land and to establish conservation strategies in such fragile agroecosystems.

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Section: Magnetic Susceptibility Of the Reference Soilsmentioning

confidence: 99%

Using magnetic susceptibility to assess soil degradation in the Eastern Rif, Morocco

Sadiki¹,

Faleh

Izquierdo

et al. 2009

Earth Surf Processes Landf

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“…Ephemeral gully erosion includes the processes of soil detachment, sediment transport, and deposition (Bryan, 2000;Ventura et al, 2002). Soil detachment is the removal of transportable materials from the soil mass by eroding agents, providing loose, non-cohesive sediment for subsequent transport and deposition (Zhang et al, 2003;Wang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Spatial heterogeneity of soil detachment capacity by overland flow at a hillslope with ephemeral gullies on the Loess Plateau

Zhang

Geng

et al. 2015

Geomorphology

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“…Commonly-used tracers include dyes of various colors, electrolytes, radioactive isotopes, fluorescent particles, magnetized materials, and heat, etc. (Abrahams et al, 1986(Abrahams et al, , 1996Lei and Nearing, 2000;Abril and Abdel-Aal, 2000;Ventura et al, 2001Ventura et al, , 2002Dunkerley, 2003;Richardson et al, 2004;Tauro et al 2012a,b). The electrolyte tracer modeling method under pulse boundary conditions, referred to as the Pulse B.C.…”

Section: Introductionmentioning

confidence: 99%

Velocity measurement of water flow within gravel layer with electrolyte tracer method under virtual boundary condition

Shi

Lei

Zhang

et al. 2015

Journal of Hydrology

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The study of detachment and deposition on a hillslope using a magnetic tracer

Cited by 36 publications

References 9 publications

Using magnetic susceptibility to assess soil degradation in the Eastern Rif, Morocco

Using magnetic susceptibility to assess soil degradation in the Eastern Rif, Morocco

Spatial heterogeneity of soil detachment capacity by overland flow at a hillslope with ephemeral gullies on the Loess Plateau

Velocity measurement of water flow within gravel layer with electrolyte tracer method under virtual boundary condition

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