Methane oxidation in a temperate coniferous forest soil: effects of inorganic N

Wang, Zhiping; Ineson, Phil

doi:10.1016/s0038-0717(02)00294-8

Cited by 124 publications

(97 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, there may be important differences between these heavily fertilised systems and natural wetlands. The lower NH 4 availability also might have promoted methanotrophic activity in the mesocosms (Wang & Ineson 2003, Keller et al, 2006 and hence reduced CH 4 emissions, although there was no evidence of enhanced soil aerobic CH 4 oxidation potential at NFA+35/10 in our study; in fact the opposite effect was observed in the top layer of the mesocosms.…”

Section: Ch 4 Production and Oxidation Potentialcontrasting

confidence: 73%

How does elevated ozone reduce methane emissions from peatlands?

Toet

Oliver

Ineson

et al. 2017

Science of The Total Environment

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Ch 4 Production and Oxidation Potentialcontrasting

confidence: 73%

How does elevated ozone reduce methane emissions from peatlands?

Toet

Oliver

Ineson

et al. 2017

Science of The Total Environment

Self Cite

View full text Add to dashboard Cite

show abstract

“…Different processes have been suggested to explain this negative effect. Firstly, methanotrophs and ammonia oxidizers are capable of switching substrates (although the latter microorganisms typically consume N compounds preferentially if available), and therefore the presence of N compounds reduces CH 4 consumption (Bradford et al, 2001;Gulledge and Schimel, 1998;Phillips et al, 2001;Wang and Ineson, 2003;Whalen, 2000). In addition, intermediate and end products from methanotrophic ammonia oxidation (i.e.…”

Section: Nitrogen Deposition Factor R Nmentioning

confidence: 99%

“…In contrast, high annual rates of CH 4 uptake in temperate evergreen forests result from elevated rates of soil methanotrophy during summer months (Sect. 2.3.4), indicating that temperature is a key driver of CH 4 oxidation in such ecosystems (Borken et al, 2006;Ueyama et al, 2015;Wang and Ineson, 2003). Savannas share many climatic conditions with tropical deciduous forests but also commonly experience wildfire during the dry season.…”

Section: Regional Variabilitymentioning

confidence: 99%

Soil Methanotrophy Model (MeMo v1.0): a process-based model to quantify global uptake of atmospheric methane by soil

et al. 2018

View full text Add to dashboard Cite

Abstract. Soil bacteria known as methanotrophs are the sole biological sink for atmospheric methane (CH 4 ), a potent greenhouse gas that is responsible for ∼ 20 % of the humandriven increase in radiative forcing since pre-industrial times. Soil methanotrophy is controlled by a plethora of factors, including temperature, soil texture, moisture and nitrogen content, resulting in spatially and temporally heterogeneous rates of soil methanotrophy. As a consequence, the exact magnitude of the global soil sink, as well as its temporal and spatial variability, remains poorly constrained. We developed a process-based model (Methanotrophy Model; MeMo v1.0) to simulate and quantify the uptake of atmospheric CH 4 by soils at the global scale. MeMo builds on previous models by Ridgwell et al. (1999) and Curry (2007) by introducing several advances, including (1) a general analytical solution of the one-dimensional diffusion-reaction equation in porous media, (2) a refined representation of nitrogen inhibition on soil methanotrophy, (3) updated factors governing the influence of soil moisture and temperature on CH 4 oxidation rates and (4) the ability to evaluate the impact of autochthonous soil CH 4 sources on uptake of atmospheric CH 4 . We show that the improved structural and parametric representation of key drivers of soil methanotrophy in MeMo results in a better fit to observational data. A global simulation of soil methanotrophy for the period 1990-2009 using MeMo yielded an average annual sink of 33.5 ± 0.6 Tg CH 4 yr −1 . Warm and semi-arid regions (tropical deciduous forest and open shrubland) had the highest CH 4 uptake rates of 602 and 518 mg CH 4 m −2 yr −1 , respectively. In these regions, favourable annual soil moisture content (∼ 20 % saturation) and low seasonal temperature variations (variations < ∼ 6 • C) provided optimal conditions for soil methanotrophy and soil-atmosphere gas exchange. In contrast to previous model analyses, but in agreement with recent observational data, MeMo predicted low fluxes in wet tropical regions because of refinements in formulation of the influence of excess soil moisture on methanotrophy. Tundra and mixed forest had the lowest simulated CH 4 uptake rates of 176 and 182 mg CH 4 m −2 yr −1 , respectively, due to their marked seasonality driven by temperature. Global soil uptake of atmospheric CH 4 was decreased by 4 % by the effect of nitrogen inputs to the system; however, the direct addition of fertilizers attenuated the flux by 72 % in regions with high agricultural intensity (i.e. China, India and Europe) and by 4-10 % in agriculture areas receiving low rates of N input (e.g. South America). Globally, nitrogen inputs reduced soil uptake of atmospheric CH 4 by 1.38 Tg yr −1 , which is 2-5 times smaller than reported previously. In addition to improved characterization of the contemporary soil sink for atmospheric CH 4 , MeMo provides an opportunity to quantify more accurately the relative importance of soil methanotrophy in the global CH 4 cycle in the past and its capaci...

show abstract

“…Adding NH 4 + + reduces the CH 4 oxidation capacity due to NH 4 + + inhibiting the activities of methanotrophic bacteria (Reay and Nedwell, 2004;Wang and Ineson, 2003;Hanson and Hanson, 1996). However, as discussed previously, the oxidation of NH 4 + + produces nitrite, which has an inhibitory effect on the MMO enzyme.…”

Section: Nutrientsmentioning

confidence: 99%

Methane Oxidation in Landfill Cover Soils: A Review

Abushammala¹,

Basri²,

Irwan³

et al. 2014

Asian J. Atmos. Environ

View full text Add to dashboard Cite

Migration of methane (CH 4 ) gas from landfills to the surrounding environment negatively affects both humankind and the environment. It is therefore essential to develop management techniques to reduce CH 4 emissions from landfills to minimize global warming and to reduce the human risks associated with CH 4 gas migration. Oxidation of CH 4 in landfill cover soil is the most important strategy for CH 4 emissions mitigation. CH 4 oxidation occurs naturally in landfill cover soils due to the abundance of methanotrophic bacteria. However, the activities of these bacteria are influenced by several controlling factors. This study attempts to review the important issues associated with the CH 4 oxidation process in landfill cover soils. The CH 4 oxidation process is highly sensitive to environmental factors and cover soil properties. The comparison of various biotic system techniques indicated that each technique has unique advantages and disadvantages, and the choice of the best technique for a specific application depends on economic constraints, treatment efficiency and landfill operations.

show abstract

Methane oxidation in a temperate coniferous forest soil: effects of inorganic N

Cited by 124 publications

References 21 publications

How does elevated ozone reduce methane emissions from peatlands?

How does elevated ozone reduce methane emissions from peatlands?

Soil Methanotrophy Model (MeMo v1.0): a process-based model to quantify global uptake of atmospheric methane by soil

Methane Oxidation in Landfill Cover Soils: A Review

Contact Info

Product

Resources

About