CCZO -- Soil Gas -- Research areas 1, 4, 7 -- (2015-2017)


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Abstract

Zachary Brecheisen, with help from Dan Richter, Will Cook, Alex Cherkinsky, Jay Austin, and others, have augered and installed soil gas wells at 4 depths at 15 locations in the Calhoun CZO. Most installation occurred in the summer of 2015 and completed in summer 2016. Gas sampling of existing wells commenced 7-31-15 and has proceeded approximately every 3 weeks since then. The gas wells target 3 different land forms: flat uplands, mid-slopes, and steeper slopes in 3 different land use comparisons. The land uses consist of 3 reference hardwood forests minimally degraded by human activity, 3 old-field secondary succession pine forests >60 years old, and 1 pseudo-replicated agricultural plot which has been, to the best of our knowledge, continually cultivated from the 1930s at the latest. The goal of this sampling is to identify anthropogenic biogeochemical signals in the deep soil profile of cultivated lands and to evaluate their persistence or lack thereof in old-field pine forests relative to reference hardwoods. Soil gas is analyzed in the field for O2 using an Apogee oxygen meter and CO2 with a Vaisala meter. Other (greenhouse) gasses are brought back to the lab, where they are analyzed on a Varian gas chromatograph with known concentration standards.
Date Range Comments: samples collected and analyzed approximately every 3 weeks; ongoing

Subject Keywords

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Calhoun CZO Research Area 1, Calhoun CZO Research Area 4, Calhoun CZO Research Area 7, Research areas 1, 4, 7
North Latitude
34.6162°
East Longitude
-81.6706°
South Latitude
34.5391°
West Longitude
-81.7654°

Temporal

Start Date:
End Date:

Content

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CCZO -- Soil Gas -- Research areas 1, 4, 7 -- (2015-2017)


OVERVIEW

Description/Abstract

Zachary Brecheisen, with help from Dan Richter, Will Cook, Alex Cherkinsky, Jay Austin, and others, have augered and installed soil gas wells at 4 depths at 15 locations in the Calhoun CZO. Most installation occurred in the summer of 2015 and completed in summer 2016. Gas sampling of existing wells commenced 7-31-15 and has proceeded approximately every 3 weeks since then. The gas wells target 3 different land forms: flat uplands, mid-slopes, and steeper slopes in 3 different land use comparisons. The land uses consist of 3 reference hardwood forests minimally degraded by human activity, 3 old-field secondary succession pine forests >60 years old, and 1 pseudo-replicated agricultural plot which has been, to the best of our knowledge, continually cultivated from the 1930s at the latest. The goal of this sampling is to identify anthropogenic biogeochemical signals in the deep soil profile of cultivated lands and to evaluate their persistence or lack thereof in old-field pine forests relative to reference hardwoods. Soil gas is analyzed in the field for O2 using an Apogee oxygen meter and CO2 with a Vaisala meter. Other (greenhouse) gasses are brought back to the lab, where they are analyzed on a Varian gas chromatograph with known concentration standards.

Creator/Author

Brecheisen, Z. S.|Cook, Charles W.|Richter, Daniel deB.

CZOs

Calhoun

Contact

Zachary Brecheisen, Nicholas School of the Environment, Duke University, Box 90328 Durham NC 27708, zbrecheisen@gmail.com

Subtitle

sampled at depths of 0.5, 1.5, 3, 5, and 8.5 meters




SUBJECTS

Disciplines

Biogeochemistry|Soil Science / Pedology

Topics

Soil Gas

Keywords

greenhouse|gasses|N2O|CO2|O2|CH4|soil gas|weathering front|deep soil

Variables

Date|Site|Plot|Depth (m)|Time|O2_pct|CO2_pct|GC_N2O_ppm|GC_CH4_ppm|GC_CO2_pct

Variables ODM2

Carbon dioxide|Depth, soil|Methane|Nitrous oxide|Oxygen




TEMPORAL

Date Start

2015-07-31

Date End

2017-11-22

Date Range Comments

samples collected and analyzed approximately every 3 weeks; ongoing




SPATIAL

Field Areas

Calhoun CZO Research Area 1|Calhoun CZO Research Area 4|Calhoun CZO Research Area 7

Location

Research areas 1, 4, 7

North latitude

34.61615

South latitude

34.53911

West longitude

-81.76541

East longitude

-81.67057




REFERENCE

CZO ID

4659

Related datasets

CCZO -- Soil Gas, Soil Moisture, Soil Temperature -- Research area 1 -- (2016-2019)




COMMENTS

Comments

Gasses analyzed/measured include O2, CO2, N2O, and CH4. O2 and CO2 are measured as percent concentrations. N2O and CH4 are measured in parts per million (ppm). Samples are collected from 4 depths in the soil profile: 0.5, 1.5, 3, & 5m.

Additional Metadata

Name Value
czos Calhoun
czo_id 4659
comments Gasses analyzed/measured include O2, CO2, N2O, and CH4. O2 and CO2 are measured as percent concentrations. N2O and CH4 are measured in parts per million (ppm). Samples are collected from 4 depths in the soil profile: 0.5, 1.5, 3, & 5m.
keywords greenhouse, gasses, N2O, CO2, O2, CH4, soil gas, weathering front, deep soil
subtitle sampled at depths of 0.5, 1.5, 3, 5, and 8.5 meters
variables Date, Site, Plot, Depth (m), Time, O2_pct, CO2_pct, GC_N2O_ppm, GC_CH4_ppm, GC_CO2_pct
disciplines Biogeochemistry, Soil Science / Pedology
related_datasets 4658
date_range_comments samples collected and analyzed approximately every 3 weeks; ongoing
related_datasets_hs https://www.hydroshare.org/resource/57a0afc2bb0e42b180478668a565720d/

How to Cite

Brecheisen, Z. S., C. W. Cook, D. d. Richter (2021). CCZO -- Soil Gas -- Research areas 1, 4, 7 -- (2015-2017), HydroShare, http://www.hydroshare.org/resource/272f43b9d49d44ee97a0d3d143e7a5cc

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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