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Spatiotemporal expansion and methane emissions of rice-crayfish farming systems in Jianghan Plain, China
Spatiotemporal expansion methane emissions rice-crayfish farming systems Jianghan Plain
2024/4/1
The rice-crayfish field (i.e., RCF), a recently emerged rice cultivation pattern, has experienced remarkable growth in China over the last decade due to its significant socioeconomic advantages. ...
Carbon dioxide and methane emissions from calcareous-marly rock under stress: experimental tests results
gas geochemistry earthquake precursors greenhouse gases
2015/9/10
The identified emissions of abiogenic carbon dioxide, carbon monoxide and methane are generally attributed to
volcanic activity or to geochemical processes associated with thermometamorphic effects. ...
New study reveals mechanism regulating methane emissions in freshwater wetlands
mechanism regulating methane emissions freshwater wetlands
2015/7/13
Though they occupy a small fraction of the Earth's surface, freshwater wetlands are the largest natural source of methane going into the atmosphere. New research from the University of Georgia i...
New study: Iceberg influx into Atlantic during ice age raised tropical methane emissions
Iceberg influx into Atlantic ice age tropical methane emissions
2015/6/18
A new study shows how huge influxes of fresh water into the North Atlantic Ocean from icebergs calving off North America during the last ice age had an unexpected effect – they increased the productio...
Uncertainties in estimating regional methane emissions from rice paddies due to data scarcity in the modeling approach
estimating regional methane emissions rice paddies
2014/12/18
Rice paddies are a major anthropogenic source
of the atmospheric methane. However, because of the high
spatial heterogeneity, making accurate estimations of the
methane emission from rice paddies i...
Modelling methane emissions from natural wetlands by development and application of the TRIPLEX-GHG model
development and application Modelling methane emissions
2014/12/18
A new process-based model TRIPLEX-GHG was
developed based on the Integrated Biosphere Simulator
(IBIS), coupled with a new methane (CH4) biogeochemistry
module (incorporating CH4 production, oxidat...
Methane Emissions from Dry Cows Fed Grass or Legume Silage
Methane Emission Cow Silage Timothy Italian Ryegrass Red Clover
2016/5/4
Using an open-circuit system, we compared the methane (CH4) emission from dry cows fed first-cut Timothy silage (1st TY), second-cut Timothy silage (2nd TY), second-cut Italian ryegrass silage (2nd IR...
Quantifying methane emissions from rice fields in the Taihu Lake region,China by coupling a detailed soil database with biogeochemical model
methane emissions rice fields Taihu Lake detailed soil database biogeochemical model
2010/1/20
As China has approximately 22% of the world's rice paddies, the regional quantification of CH4 emissions from these paddies is important in determining their contribution to the global greenhouse gas ...
Physical injury stimulates aerobic methane emissions from terrestrial plants
Physical injury aerobic methane emissions terrestrial plants
2010/1/19
Physical injury is common in terrestrial plants as a result of grazing, harvesting, trampling, and extreme weather events. Previous studies demonstrated enhanced emission of non-microbial CH4 under ae...
Trends and inter-annual variability of methane emissions derived from 1979-1993 global CTM simulations
Trends and inter-annual variability methane emissions global CTM simulations
2009/3/10
The trend and interannual variability of methane sources are derived from multi-annual simulations of tropospheric photochemistry using a 3-D global chemistry-transport model. Our semi-inverse analysi...
Stable isotopes provide revised global limits of aerobic methane emissions from plants
Stable isotopes aerobic methane emissions plants
2008/11/27
Recently Keppler et al. (2006) discovered a surprising new source of methane – terrestrial plants under aerobic conditions, with an estimated global production of 62–236 Tg yr−1 by an unknown me...
Four-dimensional variational data assimilation for inverse modelling of atmospheric methane emissions: method and comparison with synthesis inversion
Four-dimensional variational data atmospheric methane synthesis inversion
2008/11/25
A four-dimensional variational (4D-Var) data assimilation system for inverse modelling of atmospheric methane emissions is presented. The system is based on the TM5 atmospheric transport model. It can...
Methane emissions from the upwelling area off Mauritania (NW Africa)
Methane emissions upwelling area Mauritania
2010/1/18
Coastal upwelling regions have been identified as sites of enhanced CH4 emissions to the atmosphere. The coastal upwelling area off Mauritania (NW Africa) is one of the most biologically productive re...
Control of Rumen Microbial Fermentation for Mitigating Methane Emissions from the Rumen
Methane Rumen Rumen Microorganisms Methanogens
2016/4/27
The rumen microbial ecosystem produces methane as a result of anaerobic fermentation. Methanogenesis in the rumen is thought to represent a 2-12% loss of energy intake and is estimated to be about 15%...