surface soil


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Related to surface soil: soil profile

surface soil

[′sər·fəs ‚sȯil]
(geology)
The soil extending 5 to 8 inches (13 to 20 centimeters) below the surface.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
This resulted in reduction of TOC concentration by 18-38% from the BB to H stage on reducing the fallow length from 23 to 3 years in surface soil, whereas the corresponding decrease in subsurface soils was only 7-15%.
This condition arose because the strength of the surface soil was maintained at the initial stage of the landslide.
Average soil compaction expressed in soil penetration resistance was examined from the depth of 0-30 cm (surface soils) and 30-100 cm (subsurface soils) in 96 random points.
Overall, the greater activities were measured at surface soil and b-glucosidase activity significantly decreased with depth (p<0.05).
Lead--There are some residential properties with high levels of lead in surface soil, indicating the potential for elevating blood lead levels (BLLs) in children who live at or visit these properties.
The deeper the surface soil, the more organic matter it can hold.
Surface soil lead concentrations were measured at 339 locations in residential areas using an X-ray fluorescence spectrometer.
That form of root distribution determined the high organic material in the surface soil [25,26], and the decomposition and half-decomposition products were mainly retained in the surface soil.
"Mars has kind of a global layer, a layer of surface soil that has been mixed and distributed by frequent dust storms.
Brief showers will barely penetrate the surface soil - and pots and hanging baskets may even need watering twice a day.
Decomposition slowed in surface soil, while it sped up deeper underground.
Planting When taking the tree out of the pot, plant to the same level of surface soil as previously - not too deeply.

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