Assessment Of Wind Erodibility Of Soil Using Gis Techniques
Assessment Of Wind Erodibility Of Soil Using Gis Techniques
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Date
2015-04-27
Authors
Intisar Elmammoon AbdEl Gadir
Journal Title
Journal ISSN
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Publisher
University of Khartoum
Abstract
Wind erodibility of soils (WE) is a major indicator for prediction,
assessment and mapping of wind erosion.This study was undertaken to
assess and map non-erodibile particles >0.84 mm and wind erodibility
(WE) of soils of Kassala State. Surface (0-3 cm) soil samples were
collected from 50 locations, covering most irrigated and rain-fed
schemes. Non-erodibie soil particles (NEP) were measured and their
equivalent WE were estimated using a standard Table. Pertinent soil
physical and chemical properties were measured.Non-erodible particles
ranged between 15% and 65.9 % and WE ranged between 36 ton/h and
262 ton/h.Regression analysis showed significant increase in NEP with
increase in clay (C) (r2=0.4245), organic matte (OM) (r2=0.92) and
decrease of sand(S)(r2=.2821). Silt (Si) had no significantly impact on
NEP or WE. Furthermore, NEP increase significantly with increase of
C/(Si+S) (r2=0.4218), and decrease (Si+S)/C (r2=.3353), (Si+S) /(C+OM)
(r2 = 0.4611) and (Si+S) / (C+CaCO3) (r2=0.3386). Reverse significant
correlations were obtained between WE and the same soil variables in
sequence. Multiple regression analysis yielded highly significant
correlation between the five basic soil proprieties and NEP (r = 0.9400)
or WE (r =0.9174).Wind erodibility groups (WEGs) were established for
the soils of Kassala State. These WEGs correlated very well with those of
Dakota and Alberta. The NEP data was extrapolated and mapped through
out Kassala State using GIS technique.
Description
A dissertation submitted to the University of Khartoum in partial
fulfillment of the requirements for M.Sc. in Desertification
Keywords
University of Khartoum
Soil
Gis Techniques
soil erosion
Desertification
Citation
Intisar Elmammoon AbdEl Gadir, Assessment Of Wind Erodibility Of Soil Using Gis Techniques. – Khartoum : University of Khartoum, 2007. - 70 P. : illus., 28 cm., M.Sc.