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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. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Discoverable |
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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.
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| 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 |
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| Idaho State University | ||||
| USDA-ARS Northwest Watershed Research Center |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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