Spatial
information about soils generally results from local observations which are
destructive and time consuming. Geophysical techniques could help soil mapping
since they are non-destructive and fast. Electrical resistivity is interesting
for soil studies due to a wide range of values and as it depends on soil
characteristics. This work aims to study soil spatial variability using
electrical resistivity. GPS defined grid points of 40X40 m were installed in
the experimental western farm (EWF) in the Faculty of Agriculture of Cairo
University in Giza. Electrical resistivity was measured at 40 points using
4-electrodes Wenner array in a line perpendicular to the path direction. Soil
resistivity data from 2-depths profiling mode was considered to produce two
apparent resistivity maps and geostatistically tested. Soil resistivity taxa
were sampled and analyzed for soil moisture, EC and bulk density. Krigged soil
resistivity maps were produced for depths (i.e. 30 and 60 cm). Kriging and Semivariogram interpretation was
conducted, and the spatial dependency of top and subsoil resistivity were
moderate (48.4% and 68.6% respectively). Highly significant negative
correlations were recorded in the topsoil between apparent or true resistivity
and soil moisture, EC or bulk density. The obtained models were used to produce
conjugated moisture and EC maps and geostatistically investigated. The spatial
dependency of the top and subsoil moisture or salinity were moderate. Soil
moisture and EC are the most significant factors for controlling soil
electrical resistivity. The method used opens the way to the development of
semi-automatic soil mapping from electrical resistivity data.
Soil resistivity, Wenner profiling, soil moisture, soil salinity, mapping, spatial dependency
Primary Language | English |
---|---|
Subjects | Science |
Journal Section | Articles |
Authors |
|
Publication Date | April 1, 2019 |
Published in Issue | Year 2019 Volume: 8 Issue: 2 |
Bibtex | @research article { ejss528851, journal = {Eurasian Journal of Soil Science}, eissn = {2147-4249}, address = {}, publisher = {Avrasya Toprak Bilimleri Dernekleri Federasyonu}, year = {2019}, volume = {8}, number = {2}, pages = {110 - 117}, doi = {10.18393/ejss.528851}, title = {Spatial variability assessment of Nile alluvial soils using electrical resistivity technique}, key = {cite}, author = {Swileam, Gamal S. and Shahin, Reda R. and Nasr, Hamdy M. and Essa, Khalid S.} } |
APA | Swileam, G. S. , Shahin, R. R. , Nasr, H. M. & Essa, K. S. (2019). Spatial variability assessment of Nile alluvial soils using electrical resistivity technique . Eurasian Journal of Soil Science , 8 (2) , 110-117 . DOI: 10.18393/ejss.528851 |
MLA | Swileam, G. S. , Shahin, R. R. , Nasr, H. M. , Essa, K. S. "Spatial variability assessment of Nile alluvial soils using electrical resistivity technique" . Eurasian Journal of Soil Science 8 (2019 ): 110-117 <https://dergipark.org.tr/en/pub/ejss/issue/42410/528851> |
Chicago | Swileam, G. S. , Shahin, R. R. , Nasr, H. M. , Essa, K. S. "Spatial variability assessment of Nile alluvial soils using electrical resistivity technique". Eurasian Journal of Soil Science 8 (2019 ): 110-117 |
RIS | TY - JOUR T1 - Spatial variability assessment of Nile alluvial soils using electrical resistivity technique AU - Gamal S.Swileam, Reda R.Shahin, Hamdy M.Nasr, Khalid S.Essa Y1 - 2019 PY - 2019 N1 - doi: 10.18393/ejss.528851 DO - 10.18393/ejss.528851 T2 - Eurasian Journal of Soil Science JF - Journal JO - JOR SP - 110 EP - 117 VL - 8 IS - 2 SN - -2147-4249 M3 - doi: 10.18393/ejss.528851 UR - https://doi.org/10.18393/ejss.528851 Y2 - 2019 ER - |
EndNote | %0 Eurasian Journal of Soil Science Spatial variability assessment of Nile alluvial soils using electrical resistivity technique %A Gamal S. Swileam , Reda R. Shahin , Hamdy M. Nasr , Khalid S. Essa %T Spatial variability assessment of Nile alluvial soils using electrical resistivity technique %D 2019 %J Eurasian Journal of Soil Science %P -2147-4249 %V 8 %N 2 %R doi: 10.18393/ejss.528851 %U 10.18393/ejss.528851 |
ISNAD | Swileam, Gamal S. , Shahin, Reda R. , Nasr, Hamdy M. , Essa, Khalid S. . "Spatial variability assessment of Nile alluvial soils using electrical resistivity technique". Eurasian Journal of Soil Science 8 / 2 (April 2019): 110-117 . https://doi.org/10.18393/ejss.528851 |
AMA | Swileam G. S. , Shahin R. R. , Nasr H. M. , Essa K. S. Spatial variability assessment of Nile alluvial soils using electrical resistivity technique. EJSS. 2019; 8(2): 110-117. |
Vancouver | Swileam G. S. , Shahin R. R. , Nasr H. M. , Essa K. S. Spatial variability assessment of Nile alluvial soils using electrical resistivity technique. Eurasian Journal of Soil Science. 2019; 8(2): 110-117. |
IEEE | G. S. Swileam , R. R. Shahin , H. M. Nasr and K. S. Essa , "Spatial variability assessment of Nile alluvial soils using electrical resistivity technique", Eurasian Journal of Soil Science, vol. 8, no. 2, pp. 110-117, Apr. 2019, doi:10.18393/ejss.528851 |