Variation in Soil Methane Fluxes and Comparison between Two Forests in China

Wei, Hua; Peng, Changhui; Liu, Shirong; Liu, Xiaojing; Li, Peng; Song, Hanxiong; Yuan, Minshu; Wang, Meng

doi:10.3390/f9040204

Cited by 8 publications

(5 citation statements)

References 84 publications

(110 reference statements)

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“…We also detected a clear seasonal dynamic of CH 4 in this study, with higher uptake rates in summer and lower rates in winter. The similar seasonal variations of net CH 4 fluxes have been reported in alpine grasslands (Guo et al, 2016;He et al, 2014;Pei et al, 2003;Wang et al, 2009), temperate grasslands (Chen et al, 2010;Du et al, 1997;Du et al, 2005;Liu et al, 2007;Wang et al, 1998;Wang et al, 2000;Wang et al, 2013), and forests ecosystem (Steinkamp et al, 2001;Wei et al, 2018). In our study site, net CH 4 uptake occurred during the nongrowing season with freezing soil surface and low soil temperature, consistent with observations in a shortgrass steppe in North American (Mosier et al, 1996), an alpine grassland in the Qinghai-Tibetan Plateau (Pei et al, 2003), and a typical semiarid steppe grassland in Inner Mongolia .…”

Section: Seasonal Dynamic and Its Controlssupporting

confidence: 75%

“…Contrasting to our observation, Wang et al () found, the alpine meadow was weak sink during the growing season but was neutral during the nongrowing season, probably due to higher altitude (4,600–4,800 m), deeper permafrost depth, thicker snow cover, and lower temperature during winter. No clear seasonal trend of the net methane uptake flux was found in a tropical rainforest in southern China due to its relatively high and stable soil temperature all year‐round (Wei et al, ). This study suggested that the net CH 4 flux is highly dynamic at both diurnal and seasonal scales, which are predominately determined by the temporal changes in climate factors.…”

Section: Discussionmentioning

confidence: 99%

“…Similar to our results, Li et al () found that radiation promoted CH 4 uptake by releasing oxygen to the soil and providing abundant rhizosphere exudates that serve as oxidation substrates of methane through enhancing plant photosynthesis at a tundra ecosystem in the High Arctic. Soil temperature is generally considered to be a critical factor influencing seasonal patterns of net CH 4 uptake in both grassland and forest ecosystems (Chen et al, ; Liu et al, ; Wei et al, ; Wei et al, ). But our results indicated that the effects of temperature on the seasonal CH 4 uptake confounded with solar radiation.…”

Section: Discussionmentioning

confidence: 99%

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Diel and Seasonal Dynamics of Ecosystem‐Scale Methane Flux and Their Determinants in an Alpine Meadow

et al. 2019

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Temporal variations of methane flux (FCH4) and its underlying mechanisms still remain poorly understood. To quantify diurnal and seasonal patterns of FCH4 and investigate its determinants, we monitored FCH4 using eddy covariance in an alpine meadow on the Qinghai‐Tibetan Plateau, China, from June 2015 to December 2016. As a strong CH4 sink, the alpine meadow on the Qinghai‐Tibetan Plateau consumed 0.41 ± 0.04 Tg CH4/year. There was an obvious diurnal pattern with more CH4 uptakes during the nighttime than the daytime for both growing and nongrowing season. The diurnal FCH4 during the growing and nongrowing season were positively correlated with air temperature (Ta), volumetric water content, friction velocity (u*), and vapor pressure deficit. The growing season FCH4 showed a significant quadratic polynomial relationship with the canopy conductance (Gw) and gross primary production). FCH4 was significantly higher in the growing season than in the nongrowing season. The seasonal FCH4 was negatively correlated with soil temperature and net radiation (Rn) but not with volumetric water content and gross primary production. Ridge regression models indicated that Ta and u* explained 83% of the variation in the diel dynamics of FCH4 during the growing season and explained 72% of the variation during the nongrowing season. Rn accounted for 49% of variations of FCH4 at the seasonal scale. The temporal patterns and the environmental controlling factors revealed in this study may improve model parameterization for biosphere‐atmosphere CH4 exchange simulation as well as the methane budget estimation.

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Section: Seasonal Dynamic and Its Controlssupporting

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Diel and Seasonal Dynamics of Ecosystem‐Scale Methane Flux and Their Determinants in an Alpine Meadow

et al. 2019

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“…It has a continental monsoon climate with four distinct seasons [ 64 ], with an average annual temperature of 15.1 °C, an average annual precipitation of approximately 900 mm, an average annual evaporation of 991.6 mm, and an average annual relative humidity of 68% [ 65 , 66 , 67 , 68 ]. The climate is between the northern subtropical and warm temperate zones [ 64 , 69 ]. The corresponding vegetation transitions from deciduous broadleaf forest to evergreen broad-leaved forest [ 70 ].…”

Section: Methodsmentioning

confidence: 99%

Elevational Pattern of Leaf Mine Diversity on Quercus variabilis Blume at Baotianman, Henan, China

Chen

Zhang

Cui

et al. 2022

Insects

Self Cite

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The species composition and diversity pattern of leaf miners on dominant trees in China are poorly understood. Using Hill-based diversity metrics, the elevational patterns of taxonomic, phylogenetic, and functional diversity for leaf miners on Quercus variabilis Blume at Baotianman were systematically analyzed. Leaf mine types belonged to ten genera and seven families. Different leaf miners had different elevational preferences. Most taxonomic and phylogenetic Hill diversity indices had typical hump-shaped elevational patterns, with a peak at the middle elevation of approximately 875 m. No functional Hill diversity indices presented significant linear or nonlinear trends with altitude. The driving factors behind the elevational distribution patterns of leaf miners require further work.

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“…Castaldi et al, 2020; Gatica et al, 2020; Liu et al, 2017; MacCarthy et al, 2018; Zhao et al, 2019). Moreover, studies that analysed the relationships of soil micro‐organisms with GHGs only focussed on microbial abundance and/or community dynamics (Drewer et al, 2021; Hamamoto et al, 2022; Monteiro et al, 2020; Wei et al, 2018). Therefore, we proposed a study to integrate soil physical and chemical attributes evaluations with soil microbiota activity in order to understand their relationships with GHGs fluxes, especially under native subtropical forests and pine plantations.…”

Section: Introductionmentioning

confidence: 99%

Physical, chemical and microbiological soil attributes influence soil greenhouse gases fluxes in Atlantic Forest and pine (Pinus taeda) plantations in Brazil

Tulio

Rachwal

Zanatta

et al. 2022

Soil Use and Management

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Forest soils can be sources or sinks of greenhouse gases (GHGs) depending on soil attributes that affect biomass and activity of soil micro-organisms involved in GHGs fluxes. In this work, we tested the hypothesis that soil physical, chemical and microbiological attributes, under different forests ecosystems, affect the soil GHGs [nitrous oxide (N 2 O), carbon dioxide (CO 2 ) and methane (CH 4 )] fluxes.The study was carried out in two locations in southern Brazil in 2019, with three experimental plots of 900 m 2 in native forests of the Atlantic Forest biome and in loblolly pine (Pinus taeda) plantations. Air samples released from the soil surface were analysed for concentration and flux of CO 2 , N 2 O and CH 4 . Soil samples were analysed for chemical attributes, density (Ds), soil microporosity (MiPs), soil macroporosity (MaPs), total porosity (TP), water-filled pore space (WFPS), microbial biomass carbon (MB-C), basal respiration (BR), microbial (qMic) and metabolic (qCO 2 ) quotient and activities of soil urease and βglucosidase enzymes. The seasons influenced the CO 2 and N 2 O emissions, probably because of the changes in seasonal conditions. However, native forests consumed more CH 4 than pine plantations. Meanwhile, the native forests presented soils with lower Ds (average 21.5% lower), more TP (average 12.5% higher) and more moisture (average 33% higher), which improved the microbiological attributes of the soil (20% to 60% more MB-C, 67% higher urease activity and 30% higher βglucosidase activity) compared with pine plantations. Native forests contributed more intensely to CH 4 consumption than pine plantations because they present better physical, chemical and microbiological soil conditions. Therefore, it is possible that forestry practices that improve soil physical attributes are likely to contribute to increase CH 4 consumption, and to reduce GHGs emissions in forest ecosystems.

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Variation in Soil Methane Fluxes and Comparison between Two Forests in China

Cited by 8 publications

References 84 publications

Diel and Seasonal Dynamics of Ecosystem‐Scale Methane Flux and Their Determinants in an Alpine Meadow

Diel and Seasonal Dynamics of Ecosystem‐Scale Methane Flux and Their Determinants in an Alpine Meadow

Elevational Pattern of Leaf Mine Diversity on Quercus variabilis Blume at Baotianman, Henan, China

Physical, chemical and microbiological soil attributes influence soil greenhouse gases fluxes in Atlantic Forest and pine (Pinus taeda) plantations in Brazil

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