Small-scale spatial variation in soil CO2 concentration in a natural carbon dioxide spring and some related plant responses

Geoderma ◽  
2006 ◽  
Vol 133 (3-4) ◽  
pp. 309-319 ◽  
Author(s):  
D. Vodnik ◽  
D. Kastelec ◽  
H. Pfanz ◽  
I. Maček ◽  
B. Turk
Keyword(s):  
Carbon Dioxide ◽  
Spatial Variation ◽  
Co2 Concentration ◽  
Small Scale ◽  
Plant Responses ◽  
Soil Co2 ◽  
Soil Co2 Concentration ◽  
Related Plant ◽  
Natural Carbon

Ammonium application mitigates the effects of elevated carbon dioxide on the carbon/nitrogen balance of Phoebe bournei seedlings

2021 ◽  
Author(s):  
Xiao Wang ◽  
Xiaoli Wei ◽  
Gaoyin Wu ◽  
Shengqun Chen
Keyword(s):  
Carbon Dioxide ◽  
Enzyme Activities ◽  
Atmospheric Carbon Dioxide ◽  
Global Climate ◽  
Co2 Concentration ◽  
Rubisco Activase ◽  
Plant Responses ◽  
N Metabolism ◽  
C And N ◽  
Phoebe Bournei

Abstract The study of plant responses to increases in atmospheric carbon dioxide (CO2) concentration is crucial to understand and to predict the effect of future global climate change on plant adaptation and evolution. Increasing amount of nitrogen (N) can promote the positive effect of CO2, while how N forms would modify the degree of CO2 effect is rarely studied. The aim of this study was to determine whether the amount and form of nitrogen (N) could mitigate the effects of elevated CO2 (eCO2) on enzyme activities related to carbon (C) and N metabolism, the C/N ratio, and growth of Phoebe bournei (Hemsl.) Y.C. Yang. One-year-old P. bournei seedlings were grown in an open-top air chamber under either an ambient CO2 (aCO2) (350 ± 70 μmol•mol−1) or an eCO2 (700 ± 10 μmol•mol−1) concentration and cultivated in soil treated with either moderate (0.8 g per seedling) or high applications (1.2 g per seedling) of nitrate or ammonium. In seedlings treated with a moderate level of nitrate, the activities of key enzymes involved in C and N metabolism (i.e., Rubisco, Rubisco activase and glutamine synthetase) were lower under eCO2 than under aCO2. By contrast, key enzyme activities (except GS) in seedlings treated with high nitrate or ammonium were not significantly different between aCO2 and eCO2 or higher under eCO2 than under aCO2. The C/N ratio of seedlings treated with moderate or high nitrate under eCO2was significantly changed compared with the seedlings grown under aCO2, whereas the C/N ratio of seedlings treated with ammonium was not significantly different between aCO2 and eCO2. Therefore, under eCO2, application of ammonium can be beneficial C and N metabolism and mitigate effects on the C/N ratio.

Differential effects of wetting and drying on soil CO2 concentration and flux in near-surface vs. deep soil layers

2020 ◽  
Vol 148 (3) ◽  
pp. 255-269 ◽  
Author(s):  
Kyungjin Min ◽  
Asmeret Asefaw Berhe ◽  
Chau Minh Khoi ◽  
Hella van Asperen ◽  
Jeroen Gillabel ◽  
...  
Keyword(s):  
Co2 Concentration ◽  
Soil Co2 ◽  
Deep Soil ◽  
Wetting And Drying ◽  
Near Surface ◽  
Soil Layers ◽  
Differential Effects ◽  
Soil Co2 Concentration

scholarly journals Application of a low-cost NDIR sensor module for continuous measurements of in situ soil CO2 concentration

2020 ◽  
Author(s):  
Adrian Heger ◽  
Volker Kleinschmidt ◽  
Alexander Gröngröft ◽  
Lars Kutzbach ◽  
Annette Eschenbach
Keyword(s):  
Low Cost ◽  
Co2 Concentration ◽  
Soil Co2 ◽  
Soil Co2 Concentration ◽  
Continuous Measurements ◽  
Sensor Module

Variations of soil CO2 concentration and pCO2 in a cave stream on different time scales in subtropical climatic regime

CATENA ◽  
2020 ◽  
Vol 185 ◽  
pp. 104280
Author(s):  
Min Cao ◽  
Yongjun Jiang ◽  
Yu Chen ◽  
Jiaxin Fan ◽  
Qiufang He
Keyword(s):  
Time Scales ◽  
Co2 Concentration ◽  
Soil Co2 ◽  
Soil Co2 Concentration ◽  
Climatic Regime ◽  
Different Time Scales

scholarly journals The buried caldera boundary of the Vesuvius 1631 eruption revealed by present-day soil CO2 concentration

2019 ◽  
Vol 375 ◽  
pp. 43-56 ◽  
Author(s):  
M. Poret ◽  
A. Finizola ◽  
T. Ricci ◽  
G.P. Ricciardi ◽  
N. Linde ◽  
...  
Keyword(s):  
Co2 Concentration ◽  
Soil Co2 ◽  
Soil Co2 Concentration

scholarly journals Soil CO2 concentration does not affect growth or root respiration in bean or citrus

1997 ◽  
Vol 20 (12) ◽  
pp. 1495-1505 ◽  
Author(s):  
T. J. BOUMA ◽  
K. L. NIELSEN ◽  
D. M. EISSENSTAT ◽  
J. P. LYNCH
Keyword(s):  
Root Respiration ◽  
Co2 Concentration ◽  
Soil Co2 ◽  
Soil Co2 Concentration

scholarly journals Application of a laser-based spectrometer for continuous insitu measurements of stable isotopes of soil CO<sub>2</sub> in calcareous and acidic soils

2018 ◽  
Author(s):  
Jobin Joseph ◽  
Christoph Külls ◽  
Matthias Arend ◽  
Marcus Schaub ◽  
Frank Hagedorn ◽  
...  
Keyword(s):  
Soil Water ◽  
Calcareous Soils ◽  
Co2 Concentration ◽  
Calibration Method ◽  
Specific Pattern ◽  
High Temporal Resolution ◽  
Soil Co2 ◽  
Soil Co2 Concentration ◽  
Total Soil ◽  
Δ13c And Δ18o

Abstract. The short-term dynamics of carbon and water fluxes across the soil–plant–atmosphere continuum are still not fully understood. One important constraint is the lack of methodologies that enable simultaneous measurements of soil CO2 concentration and its isotopic composition at a high temporal resolution for longer periods of time. δ13C of soil CO2 can be used to derive information on the origin and physiological history of carbon and δ18O in soil CO2 aids to infer interaction between CO2 and soil water. We established a real-time method for measuring soil CO2 concentration, δ13C and δ18O values across a soil profile at higher temporal resolutions up to 1 Hz using an Off-Axis Integrated Cavity Output Spectrometer (OA-ICOS). We also developed a calibration method correcting for the sensitivity of the device against concentration-dependent shifts in δ13C and δ18O values under highly varying CO2 concentration. The deviations of measured data were modelled, and a mathematical correction model was developed and applied for correcting the shift. By coupling an OA-ICOS with hydrophobic but gas permeable membranes placed at different depths in acidic and calcareous soils, we investigated the contribution of abiotic and biotic components to total soil CO2 release. We found that in the calcareous Gleysol, CO2 originating from carbonate dissolution contributed to the total soil CO2 concentration at detectable degrees probably due to CO2 evasion from groundwater. Inward diffusion of atmospheric CO2 was found to be rather pronounced in the topsoil layers at both sites. No specific pattern was identified for δ18O in soil CO2 at the calcareous site, δ18O values reflected fairly well the δ18O of soil water at the acidic soil site.

scholarly journals Application of a laser-based spectrometer for continuous in situ measurements of stable isotopes of soil CO<sub>2</sub> in calcareous and acidic soils

SOIL ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 49-62 ◽  
Author(s):  
Jobin Joseph ◽  
Christoph Külls ◽  
Matthias Arend ◽  
Marcus Schaub ◽  
Frank Hagedorn ◽  
...  
Keyword(s):  
Soil Water ◽  
Calcareous Soils ◽  
Co2 Concentration ◽  
Calibration Method ◽  
High Temporal Resolution ◽  
Soil Co2 ◽  
Soil Co2 Concentration ◽  
Total Soil ◽  
Soil Site ◽  
Δ13c And Δ18o

Abstract. The short-term dynamics of carbon and water fluxes across the soil–plant–atmosphere continuum are still not fully understood. One important constraint is the lack of methodologies that enable simultaneous measurements of soil CO2 concentration and respective isotopic composition at a high temporal resolution for longer periods of time. δ13C of soil CO2 can be used to derive information on the origin and physiological history of carbon, and δ18O in soil CO2 aids in inferring the interaction between CO2 and soil water. We established a real-time method for measuring soil CO2 concentration, δ13C and δ18O values across a soil profile at higher temporal resolutions (0.05–0.1 Hz) using an off-axis integrated cavity output spectroscopy (OA-ICOS). We also developed a calibration method correcting for the sensitivity of the device against concentration-dependent shifts in δ13C and δ18O values under highly varying CO2 concentration. The deviations of measured data were modelled, and a mathematical correction model was developed and applied for correcting the shift. By coupling an OA-ICOS with hydrophobic but gas-permeable membranes placed at different depths in acidic and calcareous soils, we investigated the contribution of abiotic and biotic components to total soil CO2 release. We found that in the calcareous Gleysol, CO2 originating from carbonate dissolution contributed to the total soil CO2 concentration at detectable degrees, potentially due to CO2 evasion from groundwater. The 13C-CO2 of topsoil at the calcareous soil site was found reflect δ13C values of atmospheric CO2, and the δ13C of topsoil CO2 at the acidic soil site was representative of the biological respiratory processes. δ18O values of CO2 in both sites reflected the δ18O of soil water across most of the depth profile, except for the 80 cm depth at the calcareous site where a relative enrichment in 18O was observed.

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