Estimation of global biogeochemical controls and seasonality in soil methane consumption

Potter, Christopher; Davidson, Eric A.; Verchot, Louis V.

doi:10.1016/s1352-2310(97)80971-5

Cited by 47 publications

(85 citation statements)

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“…Our results on CH 4 uptake rate (0.70 ± 0.35 mg C m −2 d −1 , n = 7) in forest stands were comparable with those in the previous report (0.79±0.12 mg C m −2 d −1 ; Potter et al 1996). The estimate based on soil texture classification by Dörr et al (1993), designated as medium or coarse for the soils in this study, ranged from 0.33 to 1.07 mg C m −2 d −1 , suggesting that the estimate of CH 4 uptake rate in Southeast Asia is reasonable.…”

Section: Ch 4 Uptake/emissionsupporting

confidence: 92%

“…The global CH 4 rate of uptake by soils has been estimated at 15-35 Tg y −1 (Potter et al 1996). Humid tropical forest accounts for 10-20% of the global CH 4 uptake rate (Potter et al 1996).…”

Section: Introductionmentioning

confidence: 99%

“…Humid tropical forest accounts for 10-20% of the global CH 4 uptake rate (Potter et al 1996). The most important factor controlling the CH 4 uptake rate is the gas diffusion coefficient, which is determined by soil texture class (Born et al 1990;Verchot et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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The variation of greenhouse gas emissions from soils of various land-use/cover types in Jambi province, Indonesia

Ishizuka

Anas

Nakajima

et al. 2005

Nutr Cycl Agroecosyst

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We measured fluxes of three greenhouse gases (N 2 O, CO 2 and CH 4 ) from soils of six different land-use types at 27 temporary field sites in Jambi Province, Sumatra, Indonesia. Study sites included natural and logged-over forests; rubber plantation; oil palm plantation; cinnamon plantation; and grassland field. The ranges of N 2 O, CO 2 and CH 4 fluxes were 0.13-55.8 µg N m −2 h −1 ; 1.38-5.16 g C m −2 d −1 ; −1.27-1.18 mg C m −2 d −1 , respectively. The averages of N 2 O, CO 2 and CH 4 fluxes at 27 sites were 9.4 µg N mrespectively. The values of CO 2 and CH 4 fluxes were comparable with those in the reports regarding other humid tropical forests, while the N 2 O flux was relatively lower than those of previous reports. The N 2 O fluxes in each soil type were correlated with the nitrification rates of soils of 0-5 cm depth. In Andisols, the ratio of the N 2 O emission rate to the nitrification rate was possibly smaller than that of the other soil types. There was no clear relationship between N 2 O flux and the soil water condition, such as water-filled pore space. Seventeen percent of CH 4 fluxes were positive; according to these positive fluxes, we did not find a good correlation between CH 4 uptake rate and soil properties. Although we performed a chronosequence analysis to produce some hypotheses about the effect of land-use change by a limited amount of sampling at one point in time, further tests are required for the future.

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Section: Ch 4 Uptake/emissionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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The variation of greenhouse gas emissions from soils of various land-use/cover types in Jambi province, Indonesia

Ishizuka

Anas

Nakajima

et al. 2005

Nutr Cycl Agroecosyst

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“…Methane consumption due to oxidation in aerated soils has been reported to be significant in the global budget of methane (Reeburgh et al, 1994). Forty percent of the global CH 4 consumption occurs in dry and warm soils in wetlands, forests, grasslands, and agricultural lands (Flessa et al, 1995;Potter et al, 1996;Dong et al, 1998;Nakano et al, 2004). The degree of soil moisture can affect CH 4 emission by altering oxygen diffusion and availability, shifting the balance from oxidation toward CH 4 production, as microsites become saturated and anoxic (Adamsen & King, 1993;Czepiel et al, 1995).…”

Section: Methane Flux From Soilsmentioning

confidence: 99%

Hydrologic gradient and vegetation controls on CH4 and CO2 fluxes in a spring-fed forested wetland

Koh

Ochs

2009

Hydrobiologia

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Four different habitats in a spring-fed forested wetland (Clear Springs Wetland, Panola County, Mississippi, USA) varying in hydrologic regime were examined for methane and carbon dioxide fluxes from soils over 15 and 9 months, respectively. There was an increasing gradient of CH 4 flux rates from an unflooded upper-elevation forest site to an occasionally flooded bottomland forest site to a shallow permanently flooded site, and then to a deeper-water permanently flooded site. Depending on the time of year, all sites were sources of methane but only at the upper-elevation forest site, when gravimetric soil moisture content fell below 54%, was atmospheric methane consumed. On average, summer CH 4 emission rates were higher than those in other seasons. A multiple regression model with soil temperature and soil redox potential as independent variables could explain 65% of the variation in CH 4 flux rates. In the flooded zone, variation in CH 4 flux rates was correlated with aboveground plant biomass and stem density of emergent vascular plants, and plant-mediated CH 4 transport depended on plant type. The efflux of CH 4 to plant biomass (Eff:B) ratio was generally lower in Hydrocotyle umbellata compared to Festuca obtusa. Compared to several other freshwater forested wetlands in the southeastern USA, this spring-fed forested wetland ecosystem was a strong source of atmospheric CH 4 , likely due to a long hydroperiod and high soil organic matter content. Carbon dioxide fluxes show a reverse spatial pattern than CH 4 fluxes with highest CO 2 emissions in the non-flooded zone at all times of the year, indicating the dominance of aerobic soil respiration. A multiple regression model also revealed a strong dependency of CO 2 fluxes (r 2 = 0.73) on soil temperature and soil redox potential.

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“…In unfrozen soil, soil CO 2 efflux is a function of the availability of C sources (driven by gross primary productivity; Raich and Schlesinger 1992), sufficient available N and P (Neff et al 2002;Cleveland and Townsend 2006), warm temperatures (e.g., Q 10 functions; Mahecha et al 2010), and increasing water availability (provided soils stay aerobic; Orchard and Cook 1983;Raich and Schlesinger 1992). Soil CH 4 uptake has been modeled strictly as a function of soil texture and soil water content (Potter et al 1996;Striegl 1993) based on evidence that methanotrophic bacteria are chiefly limited by the supply of CH 4 and oxygen (O 2 ) into soil (which requires abundant soil air-filled pore space) and water (which limits gaseous diffusion and cellular activity). Soil N 2 O production is often attributed to denitrification, which requires sufficient soil water content for anaerobic conditions, sufficient N availability for nitrate (NO 3 -) production, and an energy source like dissolved organic carbon (DOC; Nömmik 1956).…”

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confidence: 99%

Proximate controls on semiarid soil greenhouse gas fluxes across 3 million years of soil development

et al. 2015

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Estimation of global biogeochemical controls and seasonality in soil methane consumption

Cited by 47 publications

References 0 publications

The variation of greenhouse gas emissions from soils of various land-use/cover types in Jambi province, Indonesia

The variation of greenhouse gas emissions from soils of various land-use/cover types in Jambi province, Indonesia

Hydrologic gradient and vegetation controls on CH4 and CO2 fluxes in a spring-fed forested wetland

Proximate controls on semiarid soil greenhouse gas fluxes across 3 million years of soil development

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