Soil organic carbon pool of grassland soils on the Qinghai-Tibetan Plateau and its global implication

Wang, Genxu; Ju, Qin; Guodong, Cheng; Yuanmin, Lai

doi:10.1016/s0048-9697(01)01100-7

Cited by 321 publications

(110 citation statements)

References 12 publications

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“…These CH 4 consumption values were within the upper range of CH 4 flux rates observed by previous studies on the Tibetan Plateau [9,[20][21][22]. The soil has a much higher content of organic carbon on the plateau than other grassland soils in China [23], which leads to a higher abundance of methanotrophs in alpine meadow soils [24,25] and higher soil CH 4 consumption in alpine meadows.…”

Section: Soil Ch 4 Consumptionsupporting

confidence: 77%

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Guo¹,

Du²,

Han³

et al. 2015

Pol. J. Environ. Stud.

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Section: Soil Ch 4 Consumptionsupporting

confidence: 77%

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Guo¹,

Du²,

Han³

et al. 2015

Pol. J. Environ. Stud.

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“…This was attributable to the fact that the soil of alpine wetlands on Qinghai-Tibetan plateau is extremely rich in organic matters (Wang et al 2002). Due to its welldeveloped alpine wetlands and a high methane emission rate, Zoige Plateau was considered to be playing an important role as a global CH 4 source.…”

Section: Temperature( C)mentioning

confidence: 99%

Diurnal variation of methane emissions from an alpine wetland on the eastern edge of Qinghai-Tibetan Plateau

Chen

Yao

et al. 2009

Environ Monit Assess

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Alpine wetland is a source for CH 4 , but little is known about methane emission from such wetland, especially about its diurnal pattern. In this study we tried to probe the diurnal variation in methane emission from alpine wetland vegetation. The average methane emission rate was 9.6 ± 3.4 mg CH 4 m −2 h −1 . There was an apparent diurnal variation pattern in methane emission with one minor peak at 06:00 and a major one at 15:00. The sunrise peak was consistent with a two-way transport mechanism for plants (convective at daytime and diffusive at night-time). CH 4 emission was found significantly correlated with redox potentials. The afternoon peak could not be explained by diurnal variation in soil temperature, but could be attributable to changes in CH 4 oxidation and production driven by plant gas transport mechanism. The results have important implications for sampling and scaling strategies for estimating methane emission from alpine wetlands.

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“…plateau in the world, an area that contains the world's largest extent of high-altitude peatlands. These alpine peatlands contain a large amount of soil organic C and play an important role in the greenhouse gas budget of peatlands in the world (Wang et al 2002). The peatland areas of the Tibetan Plateau are currently receiving elevated rates of atmospheric N and S deposition (Wang et al 2004;Liu et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrogen and sulfur deposition on CH₄and N₂O fluxes in high-altitude peatland soil under different water tables in the Tibetan Plateau

Gao

Chen

Zeng

2014

Soil Science and Plant Nutrition

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The effects of nitrogen (N) and sulfur (S) deposition on methane (CH 4 ) and nitrous oxide (N 2 O) emissions under low (10 cm below soil surface) and high (at soil surface) water tables were investigated in the laboratory. Undisturbed soil columns from the alpine peatland of the Tibetan Plateau were analyzed. CH 4 emission was higher and N 2 O emission was lower at the high water table than those at the low water table regardless of nutrient application. Addition of N (NH 4 NO 3 (ammonium nitrate), 5 g N m −2 ) decreased CH 4 emission up to 57% and 50% at low and high water tables, respectively, but correspondingly increased N 2 O emission by 2.5 and 10.4 times. Addition of S (Na 2 SO 4 (sodium sulfate), 2.5 g S m −2 ) decreased CH 4 and N 2 O emission by 64% and 79% at the low water table, respectively, but had a slightly positive effect at the high water table. These results indicated that the responses of CH 4 and N 2 O emissions to the S deposition depend on the water table condition in the high-altitude peatland.

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Soil organic carbon pool of grassland soils on the Qinghai-Tibetan Plateau and its global implication

Cited by 321 publications

References 12 publications

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Diurnal variation of methane emissions from an alpine wetland on the eastern edge of Qinghai-Tibetan Plateau

Effects of nitrogen and sulfur deposition on CH₄and N₂O fluxes in high-altitude peatland soil under different water tables in the Tibetan Plateau

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Soil organic carbon pool of grassland soils on the Qinghai-Tibetan Plateau and its global implication

Cited by 321 publications

References 12 publications

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Effects of Landuse Change on CH4 Soil-Atmospheric Exchange in Alpine Meadow on the Tibetan Plateau

Diurnal variation of methane emissions from an alpine wetland on the eastern edge of Qinghai-Tibetan Plateau

Effects of nitrogen and sulfur deposition on CH4and N2O fluxes in high-altitude peatland soil under different water tables in the Tibetan Plateau

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Product

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Effects of nitrogen and sulfur deposition on CH₄and N₂O fluxes in high-altitude peatland soil under different water tables in the Tibetan Plateau