Estimation of Soil Textural Features from Soil Electrical Conductivity Recorded Using the EM38

Domsch, Horst; Giebel, Antje

doi:10.1023/b:prag.0000040807.18932.80

Cited by 80 publications

(56 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, high soil EC under acidic conditions can be related to mobility of elements under acidic conditions, including some nutrients, Na and other metals [37,38,61]. In addition, clay itself has greater EC than sandy sites, generally due to greater cation exchange capacity [62]. The higher clay content of the acidic clay site could also result in increased binding of metals to clay mineral particles.…”

Section: Discussionmentioning

confidence: 99%

Phytoremediation Efficacy of Salix discolor and S. eriocephela on Adjacent Acidic Clay and Shale Overburden on a Former Mine Site: Growth, Soil, and Foliage Traits

Mosseler¹,

Major²

2017

Forests

View full text Add to dashboard Cite

Plants regularly experience suboptimal environments, but this can be particularly acute on highly-disturbed mine sites. Two North American willows-Salix discolor Muhl. (DIS) and S. eriocephala Michx. (ERI)-were established in common-garden field tests on two adjacent coal mine spoil sites: one with high clay content, the other with shale overburden. The high clay content site had 44% less productivity, a pH of 3.6, 42% clay content, high water holding capacity at saturation (64%), and high soil electrical conductivity (EC) of 3.9 mS cm −1 . The adjacent shale overburden site had a pH of 6.8, and after removing 56.5% stone content, a high sand content (67.2%), low water holding capacity at saturation (23%), and an EC of 0.9 mS cm −1 . The acidic clay soil had significantly greater Na (20×), Ca (2×), Mg (4.4×), S (10×), C (12×) and N (2×) than the shale overburden. Foliar concentrations from the acidic clay site had significantly greater Mg (1.5×), Mn (3.3×), Fe (5.6×), Al (4.6×), and S (2×) than the shale overburden, indicating that these elements are more soluble under acidic conditions. There was no overall species difference in growth; however, survival was greater for ERI than DIS on both sites, thus overall biomass yield was greater for ERI than DIS. Foliar concentrations of ERI were significantly greater than those of DIS for N (1.3×), Ca (1.5×), Mg (1.2×), Fe (2×), Al (1.5×), and S (1.5×). There were no significant negative relationships between metal concentrations and growth or biomass yield. Both willows showed large variation among genotypes within each species in foliar concentrations, and some clones of DIS and ERI had up to 16× the Fe and Al uptake on the acidic site versus the adjacent overburden. Genetic selection among species and genotypes may be useful for reclamation activities aimed at reducing specific metal concentrations on abandoned mine sites. Results show that, despite having a greater water holding capacity, the greater acidity of the clay site resulted in greater metal mobility-in particular Na-and thus a greater EC. It appears that the decline in productivity was not due to toxicity effects from the increased mobility of metals, but rather to low pH and moisture stress from very high soil Na/EC.

show abstract

Section: Discussionmentioning

confidence: 99%

Phytoremediation Efficacy of Salix discolor and S. eriocephela on Adjacent Acidic Clay and Shale Overburden on a Former Mine Site: Growth, Soil, and Foliage Traits

Mosseler¹,

Major²

2017

Forests

View full text Add to dashboard Cite

show abstract

“…The equipment consists of 2-unit measurements: one in a horizontal dipole (EC a -H), to provide an effective measurement depth of approximately 0.75 m, and another in a vertical dipole (EC a -V), with an effective measurement depth of approximately 1.5 m (McNeill 1980), which cover the complete root volume of a plant (Domsch and Giebel 2004). The principle of the EM38-DD device requires the instrument to be calibrated a new at each location and before each measurement (Geonics Limited 2005).…”

Section: Methodsmentioning

confidence: 99%

“…There are some factors that may affect the EC a : soil moisture, pore size distribution, salt content, particle size distribution, cation exchange capacity (CEC), clay mineral composition, pore geometry and tortuosity, concentration of dissolved electrolytes in soil water, amount and composition of colloids, and temperature of soil water (Sudduth et al 2005;Kühn et al 2008;Siqueira et al 2015a). Several authors have used EC a to improve the estimation of other soil properties (McNeill 1980;Lesch et al 2000;Schumann and Zaman 2003;Domsch and Giebel 2004;Sudduth et al 2005;Amezketa 2007). Therefore, the use of EC a measured by electromagnetic induction is an important tool soil digital mapping, favoring the use of optimized sampling schemes.…”

Section: Introductionmentioning

confidence: 99%

Spatial soil sampling design using apparent soil electrical conductivity measurements

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The ability of soil to conduct and accumulate an electrical charge has been linked with several physical and chemical soil properties. Therefore, spatial changes in soil EC a have been linked to spatial soil heterogeneity [1][2][3][4]. In non-saline, non-hydromorphic mineral soils, the particle size distribution (soil texture) in combination with related soil attributes is typically the most influential factor for spatial variation of soil EC a [5], as smaller particles (clay and fine silt) are related to higher ion concentrations (greater surface charge) and superior water storage (smaller pore size).…”

Section: Introductionmentioning

confidence: 99%

Vertical Soil Profiling Using a Galvanic Contact Resistivity Scanning Approach

Pan

Adamchuk

Prasher

et al. 2013

Symposium on the Application of Geophysics to Engineering and Environmental Problems 2013

View full text Add to dashboard Cite

Proximal sensing of soil electromagnetic properties is widely used to map spatial land heterogeneity. The mapping instruments use galvanic contact, capacitive coupling or electromagnetic induction. Regardless of the type of instrument, the geometrical configuration between signal transmitting and receiving elements typically defines the shape of the depth response function. To assess vertical soil profiles, many modern instruments use multiple transmitter-receiver pairs. Alternatively, vertical electrical sounding can be used to measure changes in apparent soil electrical conductivity with depth at a specific location. This paper examines the possibility for the assessment of soil profiles using a dynamic surface galvanic contact resistivity scanning approach, with transmitting and receiving electrodes configured in an equatorial dipole-dipole array. An automated scanner system was developed and tested in agricultural fields with different soil profiles. While operating in the field, the distance between current injecting and measuring pairs of rolling electrodes was varied continuously from 40 to 190 cm. The preliminary evaluation included a comparison of scan results from 20 locations to shallow (less than 1.2 m deep) soil profiles and to a two-layer soil profile model defined using an electromagnetic induction instrument.

show abstract

Estimation of Soil Textural Features from Soil Electrical Conductivity Recorded Using the EM38

Cited by 80 publications

References 4 publications

Phytoremediation Efficacy of Salix discolor and S. eriocephela on Adjacent Acidic Clay and Shale Overburden on a Former Mine Site: Growth, Soil, and Foliage Traits

Phytoremediation Efficacy of Salix discolor and S. eriocephela on Adjacent Acidic Clay and Shale Overburden on a Former Mine Site: Growth, Soil, and Foliage Traits

Spatial soil sampling design using apparent soil electrical conductivity measurements

Vertical Soil Profiling Using a Galvanic Contact Resistivity Scanning Approach

Contact Info

Product

Resources

About