Observing soil organic carbon spatial and seasonal variability at the Golan Heights using CO2/O2 fluxes measurements in an incubation experiment
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| Titel: | Observing soil organic carbon spatial and seasonal variability at the Golan Heights using CO2/O2 fluxes measurements in an incubation experiment |
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| Autoren: | Weiner, Tal, Rosenberg Oved, Yoav, Angert, Alon |
| Verlagsinformationen: | PANGAEA |
| Publikationsjahr: | 2025 |
| Bestand: | PANGAEA - Data Publisher for Earth & Environmental Science (AWI Bremerhaven / MARUM Bremen) |
| Schlagwörter: | Apparent respiratory quotient, Baron, Bottle number, Buqata, Carbon dioxide efflux rate, per fresh mass, Dallawe, Date/time end, temperature treatment, Date/time start, Description, ELEVATION, Event label, Experimental treatment, Gravimetric analysis, Hushania_NE, Hushania_SE, incubation experiment, Incubation temperature, Infrared Gas Analyzer (IRGA), LI-COR, LI-840A, coupled with fuel cell oxygen analyzer, Sable Systems International [Hampadah System according to Hilman and Angert (2016)], Juba, Laboratory experiment, LATITUDE, LONGITUDE, Method comment, Mount-Avital |
| Geographisches Schlagwort: | MEDIAN LATITUDE: 33.145296 * MEDIAN LONGITUDE: 35.778332 * SOUTH-BOUND LATITUDE: 32.960598 * WEST-BOUND LONGITUDE: 35.735788 * NORTH-BOUND LATITUDE: 33.220243 * EAST-BOUND LONGITUDE: 35.828639 * DATE/TIME START: 2020-10-14T00:00:00 * DATE/TIME END: 2022-06-01T00:00:00 * MINIMUM ELEVATION: 620 m a.s.l. * MAXIMUM ELEVATION: 1116 m a.s.l. |
| Beschreibung: | Soil organic matter (SOM) stores most of the terrestrial carbon, and changes in this storage can have a significant effect on the global carbon cycle. Various approaches have been used to understand the SOM transformations and stability. Here we measured the respiratory CO2 and O2 fluxes, and their ratio (the Apparent Respiratory Quotient - ARQ) in soil incubations at different temperatures, to learn about the short-term processes affecting SOM stability. To study in detail the spatial and temporal variability, we examine soil samples from two sample sets: a regional set, and a local set that was used to study the seasonality and environmental variability within a site. The regional set was taken from 11 sites located in the north and center of the Golan Heights, the samplings took place in two campaigns in October 2020 and in January 2021. In each site, the sample was pooled from 2 sub-samples taken by a trowel from A-horizon at 0-10 cm depth in adjacent locations. The local soil samples set was taken from Mt. Baron, a volcanic cinder cone which is located in the north of Golan Heights. The sampling took place in October 2021, February 2022, and June 2022, which represent the beginning, middle, and end of the rainy season. Each sample was pooled from 2 locations and taken by a trowel from A-horizon at 0-10 cm depth. At each campaign, the soil was sampled at 4 heights along the north and south slopes, under tree canopy, and in open grassland. The incubations were conducted on fresh sieved soil (2mm), wetted with distilled water to different levels. To explore the effect of anaerobic microsites on ARQ we incubated artificial clods (1 cm diameter) with wetted soil from Mt. Baron (The local set). To further test the effects of O2 limitation we conducted an experiment in which we mitigated this limitation by enriching in oxygen the atmosphere of the incubation headspace. All the incubations were carried out at the Hebrew University of Jerusalem. |
| Publikationsart: | dataset |
| Dateibeschreibung: | text/tab-separated-values, 10222 data points |
| Sprache: | English |
| Relation: | Weiner, Tal; Rosenberg, Yoav O; Angert, Alon (preprint): Characterizing soil organic carbon spatial and seasonal variability using Rock-Eval and CO2/O2 fluxes measurements. https://doi.org/10.5194/egusphere-2025-2774; Weiner, Tal; Rosenberg Oved, Yoav; Angert, Alon (2025): Observing soil organic carbon spatial and seasonal variability at the Golan Heights using Rock-Eval measurements [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.986031; Hilman, Boaz; Angert, Alon (2016): Measuring the ratio of CO2 efflux to O2 influx in tree stem respiration. Tree Physiology, tpw057, https://doi.org/10.1093/treephys/tpw057; https://doi.pangaea.de/10.1594/PANGAEA.986030; https://doi.org/10.1594/PANGAEA.986030 |
| DOI: | 10.1594/PANGAEA.986030 |
| Verfügbarkeit: | https://doi.pangaea.de/10.1594/PANGAEA.986030 https://doi.org/10.1594/PANGAEA.986030 |
| Rights: | CC-BY-4.0: Creative Commons Attribution 4.0 International ; Access constraints: unrestricted ; info:eu-repo/semantics/openAccess |
| Dokumentencode: | edsbas.B66507EC |
| Datenbank: | BASE |
Nájsť tento článok vo Web of Science | Abstract: | Soil organic matter (SOM) stores most of the terrestrial carbon, and changes in this storage can have a significant effect on the global carbon cycle. Various approaches have been used to understand the SOM transformations and stability. Here we measured the respiratory CO2 and O2 fluxes, and their ratio (the Apparent Respiratory Quotient - ARQ) in soil incubations at different temperatures, to learn about the short-term processes affecting SOM stability. To study in detail the spatial and temporal variability, we examine soil samples from two sample sets: a regional set, and a local set that was used to study the seasonality and environmental variability within a site. The regional set was taken from 11 sites located in the north and center of the Golan Heights, the samplings took place in two campaigns in October 2020 and in January 2021. In each site, the sample was pooled from 2 sub-samples taken by a trowel from A-horizon at 0-10 cm depth in adjacent locations. The local soil samples set was taken from Mt. Baron, a volcanic cinder cone which is located in the north of Golan Heights. The sampling took place in October 2021, February 2022, and June 2022, which represent the beginning, middle, and end of the rainy season. Each sample was pooled from 2 locations and taken by a trowel from A-horizon at 0-10 cm depth. At each campaign, the soil was sampled at 4 heights along the north and south slopes, under tree canopy, and in open grassland. The incubations were conducted on fresh sieved soil (2mm), wetted with distilled water to different levels. To explore the effect of anaerobic microsites on ARQ we incubated artificial clods (1 cm diameter) with wetted soil from Mt. Baron (The local set). To further test the effects of O2 limitation we conducted an experiment in which we mitigated this limitation by enriching in oxygen the atmosphere of the incubation headspace. All the incubations were carried out at the Hebrew University of Jerusalem. |
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| DOI: | 10.1594/PANGAEA.986030 |