Greenhouse gas formation during the ensiling process of grass and lucerne silage

2022 ◽  
Vol 304 ◽  
pp. 114142
Author(s):  
Alexander J. Schmithausen ◽  
Hauke F. Deeken ◽  
Katrin Gerlach ◽  
Manfred Trimborn ◽  
Kirsten Weiß ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Gas Formation

Reducing Greenhouse Gas Emission from the Neodymium Oxide Electrolysis. Part I: Analysis of the Anodic Gas Formation

2016 ◽  
Vol 3 (1) ◽  
pp. 99-107 ◽  
Author(s):  
Hanno Vogel ◽  
Benedikt Flerus ◽  
Felix Stoffner ◽  
Bernd Friedrich
Keyword(s):  
Greenhouse Gas ◽  
Greenhouse Gas Emission ◽  
Neodymium Oxide ◽  
Gas Emission ◽  
Gas Formation ◽  
Anodic Gas

scholarly journals Effect of peat quality on microbial greenhouse gas formation in an acidic fen

2009 ◽  
Vol 6 (5) ◽  
pp. 8775-8803
Author(s):  
M. Reiche ◽  
G. Gleixner ◽  
K. Küsel
Keyword(s):  
Organic Matter ◽  
Greenhouse Gas ◽  
Quality Index ◽  
Gas Chromatography Mass Spectrometry ◽  
Sampling Location ◽  
Pyrolysis Gas ◽  
Pyrolysis Products ◽  
Climate Change Research ◽  
Gas Formation ◽  
Peatland Restoration

Abstract. Peatlands play an important role in the global carbon cycle and represent both an important stock of soil carbon and a substantial natural source of relevant greenhouse gases like CO2 and CH4. While it is known that the microbial availability of organic matter affects degradation and mineralization processes in peatlands, the manner in which peat organic matter affects the formation of CO2 and CH4 remains unclear. In this study we developed a fast and simple peat quality index in order to estimate its greenhouse gas potential by linking the thermo-degradability of peat with anaerobic CO2 and CH4 formation rates. Peat samples were obtained at several depths (0–40 cm) at four sampling locations from an acidic fen (pH∼4.7). CO2 and CH4 formation rates were highly spatially variable and depended on depth, sampling location, and the composition of pyrolysable organic matter. Peat samples active in CO2 and CH4 formation had a quality index above 1.35, and the fraction of thermally labile pyrolyzable organic matter (comparable to easily available carbon substrates for microbial activity) obtained by thermogravimetry was above 35%. Curie-point pyrolysis-gas chromatography/mass spectrometry mainly identified carbohydrates and lignin as pyrolysis products in these samples, indicating that undecomposed organic matter was found in this fraction. In contrast, lipids and unspecific pyrolysis products, which indicate recalcitrant and highly decomposed organic matter, correlated significantly with lower CO2 formation and reduced methanogenesis. Our results suggest that undecomposed organic matter is a prerequisite for CH4 and CO2 development in acidic fens. Furthermore, the new peat quality index should aide the estimation of greenhouse gas formation potential resulting from peatland restoration and permafrost thawing and help yield more robust models of trace gas fluxes from peatlands for climate change research.

Dynamics of greenhouse gas formation in relation to freeze/thaw soil depth in a flooded peat marsh of Northeast China

2014 ◽  
Vol 75 ◽  
pp. 202-210 ◽  
Author(s):  
Jisong Yang ◽  
Wangming Zhou ◽  
Jingshuang Liu ◽  
Xiaojun Hu
Keyword(s):  
Greenhouse Gas ◽  
Northeast China ◽  
Soil Depth ◽  
Freeze Thaw ◽  
Gas Formation

scholarly journals Effect of peat quality on microbial greenhouse gas formation in an acidic fen

2010 ◽  
Vol 7 (1) ◽  
pp. 187-198 ◽  
Author(s):  
M. Reiche ◽  
G. Gleixner ◽  
K. Küsel
Keyword(s):  
Organic Matter ◽  
Greenhouse Gas ◽  
Quality Index ◽  
Gas Chromatography Mass Spectrometry ◽  
Sampling Location ◽  
Pyrolysis Gas ◽  
Pyrolysis Products ◽  
Climate Change Research ◽  
Gas Formation

Abstract. Peatlands play an important role in the global carbon cycle and represent both an important stock of soil carbon and a substantial natural source of relevant greenhouse gases like CO2 and CH4. While it is known that the quality of organic matter affects microbial degradation and mineralization processes in peatlands, the manner in which the quality of peat organic matter affects the formation of CO2 and CH4 remains unclear. In this study we developed a fast and simple peat quality index in order to estimate its potential greenhouse gas formation by linking the thermo-degradability of peat with potential anaerobic CO2 and CH4 formation rates. Peat samples were obtained at several depths (0–40 cm) at four sampling locations from an acidic fen (pH 4.7). CO2 and CH4 formation rates were highly spatially variable and depended on depth, sampling location, and the composition of pyrolysable organic matter. Peat samples active in CO2 and CH4 formation had a quality index above 1.35, and the fraction of thermally labile pyrolyzable organic matter (comparable to easily available carbon substrates for microbial activity) obtained by thermogravimetry was above 35%. Curie-point pyrolysis-gas chromatography/mass spectrometry mainly identified carbohydrates and lignin as pyrolysis products in these samples, indicating that undecomposed organic matter was found in this fraction. In contrast, lipids and unspecific pyrolysis products, which indicate recalcitrant and highly decomposed organic matter, correlated significantly with lower CO2 formation and reduced methanogenesis. Our results suggest that undecomposed organic matter is a prerequisite for CH4 and CO2 development in acidic fens. Furthermore, the new peat quality index should aide the estimation of potential greenhouse gas formation resulting from peatland restoration and permafrost thawing and help yield more robust models of trace gas fluxes from peatlands for climate change research.

Greenhouse gas formation in ice wedges at Cyuie, central Yakutia

2019 ◽  
Vol 30 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Kyungmin Kim ◽  
Ji-Woong Yang ◽  
Hyunsuk Yoon ◽  
Eunji Byun ◽  
Alexander Fedorov ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Central Yakutia ◽  
Gas Formation

Estimating greenhouse gas emissions from peat combustion in wildfires on Indonesian peatlands, and their uncertainty

2020 ◽  
Author(s):  
M. J. Rodríguez Vásquez ◽  
A. Benoist ◽  
J.‐M. Roda ◽  
M. Fortin
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions

Global negotiations set to limit greenhouse-gas pollution from ships

Nature ◽  
2018 ◽  
Author(s):  
Jeff Tollefson
Keyword(s):  
Greenhouse Gas

Potent greenhouse gas overlooked

Nature ◽  
2008 ◽  
Author(s):  
Quirin Schiermeier
Keyword(s):  
Greenhouse Gas

Greenhouse-gas levels highest for 650,000 years

Nature ◽  
2005 ◽  
Author(s):  
Michael Hopkin
Keyword(s):  
Greenhouse Gas

Melting lakes in Siberia emit greenhouse gas

Nature ◽  
2006 ◽  
Author(s):  
Ned Stafford
Keyword(s):  
Greenhouse Gas
Sign in / Sign up

Export Citation Format

Share Document