Soil Monolith Extraction
Soil Monolith Extraction - Related Videos
06:54
Preparing Silica Aerogel Monoliths via a Rapid Supercritical Extraction Method
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Cited by 26 •
2014
This article describes a rapid supercritical extraction method for fabricating silica aerogels. By utilizing a confined mold and hydraulic hot press, monolithic aerogels can be made in eight hours or less.
17:39
A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples
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Cited by 20 •
2017
The article describes a method that increases throughput while balancing effort and accuracy for extraction of lipids from the cell membranes of microorganisms for use in characterizing both total lipids and the relative abundance of indicator lipids to determine soil microbial community structure in studies with many samples.
11:24
Extraction of High Molecular Weight Genomic DNA from Soils and Sediments
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Cited by 21 •
2009
A methodology to isolate high molecular weight and high quality genomic DNA from soil microbial community is described.
10:03
Extraction and Analysis of Microbial Phospholipid Fatty Acids in Soils
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Cited by 133 •
2016
Phospholipid fatty acids provide information about the structure of soil microbial communities. We present methods for extraction from soil samples with a single-phase chloroform mixture, fractionation of extracted lipids using solid phase extraction columns, and methanolysis to produce fatty acid methyl esters, which are analyzed by capillary gas chromatography.
10:19
A CO2 Concentration Gradient Facility for Testing CO2 Enrichment and Soil Effects on Grassland Ecosystem Function
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Cited by 2 •
2015
The Lysimeter Carbon Dioxide Gradient Facility creates a 250 to 500 µl L-1 linear carbon dioxide gradient in temperature-controlled chambers housing grassland plant communities on clay, silty clay, and sandy soil monoliths. The facility is used to determine how past and future carbon dioxide levels affect grassland carbon cycling.
FAQs
Its main scientific value comes from maintaining the vertical arrangement of soil horizons and the spatial relationships among particles, roots, pores, and organic matter. A bulk sample can represent material from a soil layer, but it does not retain the same visible organization. Preserving that structure allows researchers to compare horizons and interpret soil formation processes in place.
Support materials or consolidants stabilize the selected soil block while it is being separated from the surrounding profile and lifted. This reinforcement helps maintain the arrangement of fragile features that would otherwise be disturbed during removal. The result is a more faithful specimen for examining horizons, structure, roots, pores, and organic matter after extraction.
The preserved vertical sequence provides a physical record for comparing horizons and visible soil features in relation to their position within the profile. Those observations can be interpreted alongside land use, ecosystem function, and environmental change. In environmental science, this makes the specimen useful for linking present soil characteristics with the processes that formed or modified them.
Researchers first expose a soil profile and select the section to be collected. They then carefully cut around that section, reinforce the block with a support or consolidant, and lift it while minimizing disturbance. Maintaining the specimen’s vertical orientation and internal arrangement is central to producing a useful sample for later study, comparison, teaching, or reference.
A selected section should retain the soil horizons and visible features that are relevant to the intended study. Important preserved elements include natural structure, roots, pores, particles, and organic matter, together with their vertical relationships. Focusing on these features allows the extracted specimen to support horizon comparison and micromorphological analysis rather than serving only as a material sample.
The method is useful when researchers need a field-based representation of a soil profile for classification, horizon comparison, or micromorphological analysis. Extracted specimens can also support long-term teaching and reference collections. Because they retain visible organization, they help learners and researchers examine how soil structure relates to formation processes, land use, ecosystem function, and environmental change.