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RCCZO -- Geology, Soil Biogeochemistry, Soil Texture -- Lithology, Coarse Fraction, Bulk Density & TOC -- Reynolds Creek Experimental Watershed -- (2014-2016)


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Created: Feb 21, 2020 at 6:32 p.m.
Last updated: Aug 27, 2020 at 9:43 p.m.
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Abstract

Pedotransfer functions (PTFs) have been developed to estimate soil bulk density (BDFF) using the relationships with soil organic carbon content (SOC) and particle size distribution. Current PTF’s implicitly assume that coarse fraction (CF) content and lithology do not influence BDFF. In this study, we examine the influence of CF content and lithology on BDFF estimates by developing PTF’s for total bulk density (BDT), which includes both fine and coarse fragments, using measured SOC in soils derived from felsic and mafic lithologies (148 felsic and 64 mafic, 212 total). Our results show that SOC is highly correlated with BDT in soils derived from felsic (r2 value of 0.79, p2 value of 0.84, p 2 mm), and we adjust BDT with soil pedon CF content to determine fine fraction bulk densities (BDFF-CFadj). A validation subset of 70 samples was used to compare our model against 23 published PTFs. When BDT is corrected for CF, which is highly variable vertically and horizontally within the watershed, we observe substantial improvements (average of 10.05 ± 4.89 %) in BDFF-CFadj estimation and associated errors compared to other PTFs. Findings from our study demonstrate that incorporation of CF and lithology into BDFF estimations can substantially improve BDFF and consequently soil carbon stock estimates.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Longitude
-116.7447°
Latitude
43.2013°

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Additional Metadata

Name Value
DOI https://doi.org/10.18122/B22M6Q
BSU ScholarWorks Link https://scholarworks.boisestate.edu/reynoldscreek/5/
Recommendation Citation Patton, Nicholas R.; Lohse, Kathleen A.; Seyfried, M.S.; Will, Ryan M.; and Benner, Shawn. (2018). Dataset for Lithology and Coarse Fraction Adjusted Bulk Density Estimates for Determining Total Organic Carbon Stocks in Dryland Soils [Data set]. Retrieved from https://doi.org/10.18122/B22M6Q

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Reynolds Creek Critical Zone Observatory EAR-1331872

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Idaho State University
USDA-ARS Northwest Watershed Research Center

How to Cite

Patton, N. R., K. A. Lohse, M. A. Seyfried, S. Benner, R. M. Will (2020). RCCZO -- Geology, Soil Biogeochemistry, Soil Texture -- Lithology, Coarse Fraction, Bulk Density & TOC -- Reynolds Creek Experimental Watershed -- (2014-2016), HydroShare, http://www.hydroshare.org/resource/5be7528f1d764542af8fda037940c6b9

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

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

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