Soil uptake of carbonyl sulfide in subtropical forests with different successional stages in south China

Yi, Zhigang; Wang, Xinming; Sheng, Guoying; Zhang, Deqiang; Zhou, Guoyi; Fu, Jiamo

doi:10.1029/2006jd008048

Cited by 75 publications

(109 citation statements)

References 71 publications

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“…However, we were not able to partition the nighttime uptake of OCS into soil and vegetative contributions in late April. This estimate, for active soils in April and December is in close agreement with the average soil uptake measured in a creek area in Colorado (28) of 7 ± 2.6 pmol·m −2 ·s −1 and is slightly greater than the average uptake rate for soil in a mixed forest reported for China of 4.8 ± 2.9 pmol·m −2 ·s −1 (31).…”

Section: Resultssupporting

confidence: 76%

Seasonal fluxes of carbonyl sulfide in a midlatitude forest

Commane

Meredith

Baker

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

118

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Carbonyl sulfide (OCS), the most abundant sulfur gas in the atmosphere, has a summer minimum associated with uptake by vegetation and soils, closely correlated with CO 2 . We report the first direct measurements to our knowledge of the ecosystem flux of OCS throughout an annual cycle, at a mixed temperate forest. The forest took up OCS during most of the growing season with an overall uptake of 1.36 ± 0.01 mol OCS per ha (43.5 ± 0.5 g S per ha, 95% confidence intervals) for the year. Daytime fluxes accounted for 72% of total uptake. Both soils and incompletely closed stomata in the canopy contributed to nighttime fluxes. Unexpected net OCS emission occurred during the warmest weeks in summer. Many requirements necessary to use fluxes of OCS as a simple estimate of photosynthesis were not met because OCS fluxes did not have a constant relationship with photosynthesis throughout an entire day or over the entire year. However, OCS fluxes provide a direct measure of ecosystem-scale stomatal conductance and mesophyll function, without relying on measures of soil evaporation or leaf temperature, and reveal previously unseen heterogeneity of forest canopy processes. Observations of OCS flux provide powerful, independent means to test and refine land surface and carbon cycle models at the ecosystem scale.carbonyl sulfide | carbon cycle | sulfur cycle | stomatal conductance C arbonyl sulfide (OCS) is the most abundant sulfur gas in the atmosphere (1), and biogeochemical cycling of OCS affects both the stratosphere and the troposphere. The tropospheric OCS mixing ratio is between 300 and 550 parts per trillion (ppt) (1) (10 −12 mol OCS per mol dry air), decreasing sharply with altitude in the stratosphere (2). In times of low volcanic activity, the sulfur budget and aerosol loading of the stratosphere are largely controlled by transport and photooxidation of OCS from the troposphere (3). The processes regulating emission and uptake of OCS are thus important factors in determining how changes in climate and land cover may affect the stratospheric sulfate layer.Oceans are the dominant source of atmospheric OCS (4), with smaller emissions from anthropogenic and terrestrial sources, such as wetlands and anoxic soils (e.g., refs. 5 and 6) and oxic soils during times of heat or drought stress (e.g., refs. 7 and 8). The terrestrial biosphere is the largest sink for OCS (1, 4, 9, 10) with uptake by both oxic soils (e.g., ref. 11) and vegetation (e.g., ref. 9). Once OCS molecules pass through the stomata of leaves, the uptake rate of OCS is controlled by reaction with carbonic anhydrase (CA) within the mesophyll, to produce H 2 S and CO 2 . CA is the same enzyme that hydrolyzes carbon dioxide (CO 2 ) in the first chemical step of photosynthesis (12).Studies considering the large-scale atmospheric variability of OCS have linked OCS fluxes and the photosynthetic uptake of CO 2 for regional and global scales (1, 4, 13). Leaf-scale studies have confirmed the OCS link to photosynthesis (14, 15). Initial OCS ecosystem flux estimations w...

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Section: Resultssupporting

confidence: 76%

Seasonal fluxes of carbonyl sulfide in a midlatitude forest

Commane

Meredith

Baker

et al. 2015

Proc. Natl. Acad. Sci. U.S.A.

118

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“…OVOC species were analyzed by a gas chromatography-mass spectrometry detector (GC-MSD) system (6890/5973N, Agilent Technologies, Santa Clara, CA, USA) coupled with an Entech Preconcentrator (Entech Instruments Inc., Simi Vally, CA, USA). Details about sample analysis, standard preparation and calibration were similar to those presented previously (Yi et al, 2007;Wang and Wu, 2008). Briefly, an Entech Preconcentrator with three stages of cryo-trapping was applied to concentrate OVOCs before GC-MS analysis.…”

Section: Ovocs Analysismentioning

confidence: 99%

Emission of oxygenated volatile organic compounds (OVOCs) during the aerobic decomposition of orange wastes

Wang

2015

Journal of Environmental Sciences

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“…Soil COS uptake depends nonlinearly on soil temperature and moisture, with optimal conditions that maximize the uptake (Kesselmeier et al, 1999;Van Diest and Kesselmeier, 2008;Whelan et al, 2016). Soil COS uptake also correlates positively with soil respiration (Yi et al, 2007;Berkelhammer et al, 2014;Sun et al, 2016), suggesting a link through microbial activity between them.…”

mentioning

confidence: 99%

“…Aerated upland soils are primarily weak COS sinks, whereas anoxic wetland soils are COS sources (Whelan et al, 2013). In unmanaged upland soils, the uptake rates range from 0 to 12 pmol m −2 s −1 in field studies (e.g., Steinbacher et al, 2004;Yi et al, 2007;Berkelhammer et al, 2014). Soil COS uptake depends nonlinearly on soil temperature and moisture, with optimal conditions that maximize the uptake (Kesselmeier et al, 1999;Van Diest and Kesselmeier, 2008;Whelan et al, 2016).…”

mentioning

confidence: 99%

Soil fluxes of carbonyl sulfide (COS), carbon monoxide, and carbon dioxide in a boreal forest in southern Finland

et al. 2018

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Abstract. Soil is a major contributor to the biosphereatmosphere exchange of carbonyl sulfide (COS) and carbon monoxide (CO). COS is a tracer with which to quantify terrestrial photosynthesis based on the coupled leaf uptake of COS and CO 2 , but such use requires separating soil COS flux, which is unrelated to photosynthesis, from ecosystem COS uptake. For CO, soil is a significant natural sink that influences the tropospheric CO budget. In the boreal forest, magnitudes and variabilities of soil COS and CO fluxes remain poorly understood. We measured hourly soil fluxes of COS, CO, and CO 2 over the 2015 late growing season (July to November) in a Scots pine forest in Hyytiälä, Finland. The soil acted as a net sink of COS and CO, with average uptake rates around 3 pmol m −2 s −1 for COS and 1 nmol m −2 s −1 for CO. Soil respiration showed seasonal dynamics controlled by soil temperature, peaking at around 4 µmol m −2 s −1 in late August and September and dropping to 1-2 µmol m −2 s −1 in October. In contrast, seasonal variations of COS and CO fluxes were weak and mainly driven by soil moisture changes through diffusion limitation. COS and CO fluxes did not appear to respond to temperature variation, although they both correlated well with soil respiration in specific temperature bins. However, COS : CO 2 and CO : CO 2 flux ratios increased with temperature, suggesting possible shifts in active COS-and CO-consuming microbial groups. Our results show that soil COS and CO fluxes do not have strong variations over the late growing season in this boreal forest and can be represented with the fluxes during the photosynthetically most active period. Well-characterized and relatively invariant soil COS fluxes strengthen the case for using COS as a photosynthetic tracer in boreal forests.

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Soil uptake of carbonyl sulfide in subtropical forests with different successional stages in south China

Cited by 75 publications

References 71 publications

Seasonal fluxes of carbonyl sulfide in a midlatitude forest

Seasonal fluxes of carbonyl sulfide in a midlatitude forest

Emission of oxygenated volatile organic compounds (OVOCs) during the aerobic decomposition of orange wastes

Soil fluxes of carbonyl sulfide (COS), carbon monoxide, and carbon dioxide in a boreal forest in southern Finland

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