| Autor: |
Theresa Merl, Klaus Koren, Alexander Honeyman, John Spear |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Honeyman, A S, Merl, T, Spear, J R & Koren, K 2023, ' Optode-based chemical imaging of laboratory burned soil reveals millimeter-scale heterogeneous biogeochemical responses ', Environmental Research, pp. 115469 . https://doi.org/10.1016/j.envres.2023.115469 |
| ISSN: |
0013-9351 |
| DOI: |
10.1016/j.envres.2023.115469 |
| Popis: |
Soil spatial responses to fire are unclear. Using optical chemical sensing with planar 'optodes', pH and dissolved O2 concentration were tracked spatially with a resolution of 360 μm per pixel for 72 h after burning soil in the laboratory with a butane torch (∼1300 °C) and then sprinkling water to simulate a postfire moisture event. Imaging data from planar optodes correlated with microbial activity (quantified via RNA transcripts). Post-fire and post-wetting, soil pH increased throughout the entire ∼13 cm × 17 cm × 20 cm rectangular cuboid of sandy loam soil. Dissolved O2 concentrations were not impacted until the application of water postfire. pH and dissolved O2 both negatively correlated (p |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect