Interannual and seasonal variability in carbon dioxide and methane fluxes of a pine peat bog in the Eastern Alps, Austria

Drollinger, Simon; Maier, Andreas; Glatzel, Stephan

doi:10.1016/j.agrformet.2019.05.015

Cited by 18 publications

(5 citation statements)

References 59 publications

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“…This also explained the between‐year variability of net CO 2 ‐eq uptake (Figures ). Indeed, the observed positive effect of T soil on CH 4 emissions (Figure ), which has been widely found in this region (e.g., Chen et al., 2008; W. Song et al., 2015) and worldwide (e.g., Dalmagro et al., 2019; Drollinger et al., 2019; Treat et al., 2014; J. Zhao et al., 2016), amplified the sensitivity of net CO 2 ‐eq emission to T soil during the non‐growing season but did not switch the overall relationship between net CO 2 ‐eq and T soil during the growing season.…”

Section: Discussionmentioning

confidence: 63%

Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

et al. 2021

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Carbon dioxide (CO 2 ) and methane (CH 4 ) are the two most important long-lived greenhouse gases (LL-GHGs) and together contribute to over 80% of the radiative forcing caused by LLGHGs (WMO, 2018). Peatlands cover only about 3% of the Earth's land surface area but store over 614 ± 80 Pg (10 15 g) of carbon (C), accounting for one-third of the global soil C pool and about 70% of the atmospheric C pool (Loisel et al., 2017;Xu et al., 2018;Yu, 2011;Yu et al., 2010). It has been widely acknowledged that peatlands have played an important role in regulating the global C and GHG cycles and climate change (Friedlingstein et al., 2019;Frolking et al., 2011;Hopple et al., 2020). Peatland ecosystems have the potential to mitigate climate change by sequestering CO 2 from the atmosphere into biomass and soils (Baldocchi & Penuelas, 2019;Nugent et al., 2019;Stocker et al., 2017); meanwhile, peatlands emit large amounts of CH 4 to the atmosphere during the peatland forming and growing processes (Dommain et al., 2018;Kirschke et al., 2013), thus resulting in contrasting effects on radiative forcing. Both pathways are sensitive to climate change and anthropogenic activities (Chen et al., 2013;Frolking et al., 2011); for example, drought caused by both peatland drainage and low precipitation (Fenner & Freeman, 2011;Swindles et al., 2019), peatland wildfires and burning (Turetsky et al., 2015), and conversion for agricultural uses (Carlson et al., 2013;Dommain et al., 2018) can shift the peatlands from net GHG sinks to sources. However, it should be noted that the historical, current, and future contributions of peatlands to the global C budget and radiative forcing are still uncertain due to limited knowledge of the synergistic feedbacks of CO 2 and CH 4 to climatic perturbation and anthropogenic activities (

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Section: Discussionmentioning

confidence: 63%

Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

et al. 2021

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“…This may be caused by the wet conditions that could increase the photosynthesis of vegetation and thus promoted the carbon sequestration capacity in an ecosystem ( Trudeau et al, 2014 ). Other studies have also proposed that the carbon cycle in wetland ecosystems was dominated by PPT ( Griffis and Rouse, 2001 ; Aslan-Sungur et al, 2016 ; Drollinger et al, 2019 ). A significant negative correlation of NEE with PPT in an arid desert wetland ecosystem has been established by Gou et al (2017) .…”

Section: Discussionmentioning

confidence: 97%

Environmental Controls on Multi-Scale Dynamics of Net Carbon Dioxide Exchange From an Alpine Peatland on the Eastern Qinghai-Tibet Plateau

et al. 2022

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Peatlands are characterized by their large carbon storage capacity and play an essential role in the global carbon cycle. However, the future of the carbon stored in peatland ecosystems under a changing climate remains unclear. In this study, based on the eddy covariance technique, we investigated the net ecosystem CO2 exchange (NEE) and its controlling factors of the Hongyuan peatland, which is a part of the Ruoergai peatland on the eastern Qinghai-Tibet Plateau (QTP). Our results show that the Hongyuan alpine peatland was a CO2 sink with an annual NEE of −226.61 and −185.35 g C m–2 in 2014 and 2015, respectively. While, the non-growing season NEE was 53.35 and 75.08 g C m–2 in 2014 and 2015, suggesting that non-growing seasons carbon emissions should not be neglected. Clear diurnal variation in NEE was observed during the observation period, with the maximum CO2 uptake appearing at 12:30 (Beijing time, UTC+8). The Q10 value of the non-growing season in 2014 and 2015 was significantly higher than that in the growing season, which suggested that the CO2 flux in the non-growing season was more sensitive to warming than that in the growing season. We investigated the multi-scale temporal variations in NEE during the growing season using wavelet analysis. On daily timescales, photosynthetically active radiation was the primary driver of NEE. Seasonal variation in NEE was mainly driven by soil temperature. The amount of precipitation was more responsible for annual variation of NEE. The increasing number of precipitation event was associated with increasing annual carbon uptake. This study highlights the need for continuous eddy covariance measurements and time series analysis approaches to deepen our understanding of the temporal variability in NEE and multi-scale correlation between NEE and environmental factors.

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“…The current mean water table depth is about 14 cm below soil surface at the central peat bog area. Peat decomposition and related CO2 and CH4 fluxes were subject of a series of research studies (Drollinger et al, 2019;Knierzinger et al, 2020;Müller et al, 2022;Glatzel et al, 2023).…”

Section: Pürgschachen Moor (Peat Bog)mentioning

confidence: 99%

“…For an interpretation of the CO2 respiration fluxes and their limiting factors, we refer to the citations listed in the site description chapter. Drollinger et al (2019) provides interpretations of the patterns of CO2 and CH4 fluxes, measured using Eddy covariance techniques at the bog site Pürgschachen Moor (PUE), and likewise, Baur et al (2024), for the reed belt of Neusiedler See (NSS). Stem growth limitations can, on the other hand, be closely related to soil water content, particularly at sites with relatively low precipitation such as Klausen-Leopoldsdorf (KLL) (Figure 5).…”

Section: Data Validationmentioning

confidence: 99%

High-resolution Carbon cycling data from 2019 to 2021 measured at six Austrian LTER sites

Dirnböck,

Bahn,

Diaz-Pines

et al. 2024

Preprint

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Abstract. Seven long-term observation sites have been established in six regions across Austria, covering major ecosystem types such as forests, grasslands and wetlands across a wide bioclimatic range. The purpose of these observations is to measure key ecosystem parameters serving as baselines for assessing the impacts of extreme climate events on the carbon cycle. The data sets collected include meteorological variables, soil microclimate, CO2 fluxes and tree stem growth, all recorded at high temporal resolution between 2019 and 2021 (including one year of average climate conditions and two comparatively dry years). The DOIs of the dataset can be found in the data availability chapter. The sites will be integrated into the European Research Infrastructure for Integrated European Long-Term Ecosystem, Critical Zone, and Socio-Ecological Research (eLTER RI). Subsequently, new data covering the variables presented here will be continuously available through its data integration portal. This step will allow the data to reach its full potential for research on drought-related ecosystem carbon cycling.

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Interannual and seasonal variability in carbon dioxide and methane fluxes of a pine peat bog in the Eastern Alps, Austria

Cited by 18 publications

References 59 publications

Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

Methane Emissions Offset Net Carbon Dioxide Uptake From an Alpine Peatland on the Eastern Qinghai‐Tibetan Plateau

Environmental Controls on Multi-Scale Dynamics of Net Carbon Dioxide Exchange From an Alpine Peatland on the Eastern Qinghai-Tibet Plateau

High-resolution Carbon cycling data from 2019 to 2021 measured at six Austrian LTER sites

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