ABoVE: Active Layer Soil Characteristics at Selected Sites Across Alaska ... : Arctic-Boreal Vulnerability Experiment (ABoVE) ...

• Main Authors: Ludwig, S., Minions, C., Natali, S., Watts, J.D.
• Format: Article in Journal/Newspaper
• Language: English
• Published: ORNL Distributed Active Archive Center 2023
• Subjects: LAND SURFACE, SOILS, SOIL PH,; LAND SURFACE, SOILS, SOIL MOISTURE/WATER CONTENT,; HUMAN DIMENSIONS, NATURAL HAZARDS, WILDFIRES, BURNED AREA; LAND SURFACE, SOILS, SOIL HORIZONS/PROFILE,; LAND SURFACE, FROZEN GROUND, ACTIVE LAYER,; LAND SURFACE, SOILS, SOIL BULK DENSITY,; LAND SURFACE, SOILS, ORGANIC MATTER,; FIELD SURVEYS, CORING DEVICES; soil organic matter; soil cores; soil pH; active layer; thaw depth; transects; Arctic; permafrost; Alaska
• Online Access: https://dx.doi.org/10.3334/ornldaac/2315; https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=2315

This dataset provides soil active layer characteristics from nine locations across Alaska. Soil samples were collected in 2016 except for one site which was sampled in 2018. Soil cores were collected from each site using a steel barrel and plastic sample tube attached to a hand drill. At the majority of sites, samples were taken from each end of three 30-m transects (i.e. samples collected at the 0 m and 30 m location of each transect). The entire thawed horizon (active layer) was sampled where possible, and the length of cores varies among sites. Cores were kept frozen until analysis in the lab. Samples were sectioned by horizon (organic and mineral), and the organic horizon was split into subsections so that no section was longer than approximately 10 cm. Coarse roots were removed, dried and weighed. Soils were measured for gravimetric water content, percent soil organic matter (SOM), pH, and bulk density. Locations were selected to investigate fire disturbance, to span the range of permafrost regions from ...