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(Article of periodic en Anglais - 2014)

Document title

Pattern of cumulative soil erosion and redistribution pinpointed through magnetic signature of Chernozem soils

Authors(s) and Affiliation(s)

JORDANOVA D. (1) ; JORDANOVA N. (1) ; PETROV P. (1) ;
(1) National Inst. of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences, Sofia, BULGARIE

Abstract

The experimental test field is situated in NE Bulgaria, southward from the city of Russe. An agricultural land of 4.5 ha, utilized for crop production, has been mapped at 10 × 10 m grid interval by using magnetic methods. Field measurements of magnetic susceptibility show high sensitivity to the present soil surface conditions (crop residue cover, soil compaction, sealing) in addition to the main response to erosional removal of the uppermost soil horizons. Laboratory measurements of magnetic susceptibility (χ), frequency dependent magnetic susceptibility (χfd) and Isothermal Remanent Magnetization on soil samples allow construction of surface maps of these magnetic characteristics. Comparison of the maps with terrain slope reveals that in the upper slope positions (having slopes of 1–5°) tillage redistribution plays the main role. In contrast, at toe slope sites, characterized by higher slopes (11–15°), water erosion caused significant removal of soil material. Mean annual erosion rates have been calculated, corresponding to about 50 years of agricultural land use

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, vol. 120 [pp. 46-56]

Bibliographic references : 38 ref.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.03.020

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28681841 : Permanent link - XML version
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