Checking for missing content type metadata ...
This resource contains content types with missing metadata required to make it public or discoverable. Show missing content type metadata.
Click on the edit button ( ) below to edit this resource.
Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
| Authors: |
|
|
|---|---|---|
| Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
| Type: | Resource | |
| Storage: | The size of this resource is 650.5 KB | |
| Created: | Oct 26, 2023 at 4:08 p.m. (UTC) | |
| Last updated: | Aug 19, 2026 at 11:22 p.m. (UTC) | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
|---|---|
| Views: | 58 |
| Downloads: | 5 |
| +1 Votes: | Be the first one to this. |
| Comments: | No comments (yet) |
Abstract
In natural drylands, the formation of pedogenic carbonate, or secondary calcite (CaCO3), is critical in shaping soil hydrologic and biogeochemical properties and modifying the global carbon cycle over geological time. When dryland ecosystems are converted to managed agricultural sites, irrigation water can supply HCO3- and Ca2+, accelerating rates of CaCO3 formation and releasing abiotic CO2. In this study, we used carbon isotopic composition of soil CO2 to assess its sources and used soil CO2 concentration gradients to estimate the diffusive CO2 effluxes from soil to atmosphere in an arid agricultural setting, a flood irrigated pecan orchard in western Texas, United States. Soil gases were collected from multiple soil depths at two sites within the pecan orchard, Pecan_Coarse and Pecan_Fine, which have contrasting soil textures and associated differences in soil salinity, pedogenic carbonate accumulation rates, and tree size.
A manuscript, titled "Flood Irrigation Drives the Temporal Variability of Soil Respiration, Pedogenic Carbonate Accumulation Rates, and soil CO2 production dynamics in arid agricultural soils" is under review by Applied Geochemistry. (Andrews et al.). Data contained in this resource include the measured concentrations and isotopic compositions of soil CO2, the chemistry of ground and surface water samples used for irrigation, and calculated CO2 efflux based on gas diffusion.
Subject Keywords
Coverage
Spatial
Content
Credits
Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| U.S. National Science Foundation | Network Cluster: Patterns and controls of ecohydrology, CO2 fluxes, and nutrient availability in pedogenic carbonate-dominated dryland critical zones | 2012475 |
| U.S. National Science Foundation | Combine sensors, geophysical survey and geochemical tools to investigate pedogenic carbonate precipitation and carbon dioxide emission in irrigated soils of aridlands | 1853680 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment