N2O and CO2 emissions from three different tropical forest sites in the wet tropics of Queensland, Australia

Kiese, Ralf; Butterbach‐Bahl, Klaus

doi:10.1016/s0038-0717(02)00031-7

Cited by 202 publications

(200 citation statements)

References 27 publications

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“…In these forests, the highest N 2 O emission rates coincided with the highest soil moisture and always took place when the soil moisture was higher than 25% (Merino et al, 2004). Other field and laboratory studies (García-Méndez et al, 1991;Davidson et al, 1993;Kiese and Butterbach-Bahl, 2002) demonstrated that N 2 O emissions were positively correlated with soil moisture content, which is in agreement with our study. In the current study, significant correlations between N 2 O fluxes and soil water content were only found in mudflat and P. australis community, but no significant relationship was found in T. chinensis and S. salsa communities.…”

Section: Discussionsupporting

confidence: 92%

“…Correlation analysis in the current study showed that there did not exist a significant relationship between air or soil temperatures and N 2 O emissions in P. australis community, but the significant relationship between N 2 O emissions and temperature was found in other three positions. Tang et al (2006) suggested that soil temperature did not have a strong effect on N 2 O emissions, which was consistent with results reported in tropical, agricultural soils (Crill et al, 2000;Kiese and Butterbach-Bahl, 2002). On the other hand, some studies showed that N 2 O fluxes were strongly correlated with soil temperature.…”

Section: Discussionsupporting

confidence: 83%

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Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Zhang

Song

Zhang

et al. 2013

Ecological Engineering

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a b s t r a c tSalt-affected soils are extensively present and constitute about 7% of total land surface. However, our knowledge about nitrous oxide (N 2 O) production through rapid nitrification and denitrification processes between the atmosphere and the saline soil is very limited. In order to evaluate the potential of N 2 O consumption in saline soils, this study was therefore designed to quantify the variability in N 2 O emissions monthly in the Yellow River Delta in China. Main issues include: different saline-alkaline soils and temporal aspects. Our aim was to quantify N 2 O emissions and identify the major drivers controlling its emissions for providing guidance in eco-restoring coastal wetland on large scale. By using in situ closed chambers the annual average emissions of N 2 O from the mudflat was determined and it was significantly higher than plant communities, especially herbage communities. In general, the emissions of N 2 O of different ecosystems showed a unique-peak annual pattern, with the peak in September. Saline-alkaline mudflat and different vegetations acted as N 2 O source in the Yellow River Delta and the N 2 O emission of different ecosystems followed the order: Saline-alkaline mudflat > T. chinensis >S. salsa > P. australis. Therefore restoration of saline land through revegetation was necessary to reduce the N 2 O emission of saline soils. The effects of air and soil temperature on N 2 O fluxes were significant in salt-affected soils except P. australis. Soil water content and electrical conductivity correlated positively or negatively with N 2 O emissions in mudflat and P. australis community. While relationships between N 2 O production and other soil properties (TC, TN, C:N ratio, NH 4 + -N and NO 3 − -N) were only significant in mudflat and T. chinensis community. Temporal variations of N 2 O emission were related to the interactions of abiotic factors (air and soil temperature, soil water content and electrical conductivity) and the variations of other soil properties, while spatial variations were mainly affected by the vegetation composition at spatial scale.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 83%

Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Zhang

Song

Zhang

et al. 2013

Ecological Engineering

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“…In all the forest types, N 2 O emissions varied seasonally, with lower N 2 O emission rates during the dry season than the wet season (Fig. 3a, b, c), which is consistent with previous studies (Breuer et al, 2000;Kiese and Butterbach-Bahl, 2002). There was an unusual peak value in December in PMR, occurring in the wet season to dry season transiting period.…”

Section: Variations Of N 2 O Fluxes Among the Three Forest Typessupporting

confidence: 91%

“…Most of the available data come from Brazil (Garcia-Montiel et al, 2003;Keller et al, 1983;Neto et al, 2011;van Haren, 2011;van Haren et al, 2010) and Central America (Bowden et al, 1992;Erickson and Ayala, 2004;García-Méndez et al, 1991;Keller and Reiners, 1994;McSwiney, 1999;McSwiney et al, 2001;Wieder et al, 2011), and there are a few studies from Australia (Breuer and Butterbach-Bahl, 2005;Breuer et al, 2000;Kiese and Butterbach-Bahl, 2002) and Africa (Castaldi et al, 2013;Werner et al, 2007). There are only two studies from the tropical rainforest in Xishuangbanna, southwest China (Werner et al, 2006;Yan et al, 2008), and two from Dinghushan, Southern Subtropical China (Fang et al, 2009;Tang et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China

Bai

Yang

Chen

et al. 2014

Atmospheric Environment

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“…Correlations between CO 2 emission rates and water content vary according to soil moisture conditions. Kiese and Butterbach-Bahl (2002) reported that CO 2 emission rates were positively correlated with moisture in dry soils, but negatively correlated when water-filled pores were>50-60%, because of limited O 2 diffusion in the soil matrix. Other authors proposed that C-mineralization and CO 2 emission rates are incremented by drying and wetting cycles (VANGESTEL et al, 1993;FIERER;SCHIMEL, 2002 Table 2 -Total evolved C-CO 2 from soils under eucalypt, as affected by stand age, topographic position, temperature and moisture, after 106 days of incubation.…”

Section: Litterbag Experimentsmentioning

confidence: 99%

Forest Litter Decomposition as Affected by Eucalyptus Stand Age and Topography in South-Eastern Brazil1

2015

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-Forest litter decomposition is a major process in returning nutrients to soils and thus promoting wood productivity in the humid tropic. This study aimed to assess decomposition of eucalypt litter in the Rio Doce region, Brazil. Leaf litter was sampled under clonal eucalypt stands aged 2, 4 and 6 years on hillslopes and footslopes. Soil and soil+litter samples were incubated at two levels of soil moisture, temperature and fertilization. C-CO 2 emissions from soil measured during 106 days were higher at 32 °C than at 23°C, mainly for the 2-yr-old stand on footslope. When leaf litter was added on soils, C-CO 2 emissions were eight times higher, mainly on footslopes, with no effect of stand age. Leaf decomposition in situ, assessed with a litterbag experiment showed a mean weight loss of at least 50% during 365 days, reaching 74% for 2 yr-old stands on footslopes. In comparison with data from the native forest and the literature, no apparent restrictions were found in eucalypt litter decomposition. Differences between in vitro and in situ results, and between eucalypt and native forest, were most likely related to the response of diverse decomposer communities and to substrate quality.Keywords: Soil respiration; Litterbag; CO 2 evolution. DECOMPOSIÇÃO DE SERAPILHEIRA FLORESTAL: EFEITO DA IDADE DO EUCALIPTO E TOPOGRAFIA NO SUDESTE DO BRASILRESUMO -A decomposição de serapilheira florestal é um processo importante ao retornar nutrientes ao solo e, assim, estimular a produtividade da madeira no trópico úmido. Este trabalho objetivou avaliar a decomposição de serapilheira de eucalipto na região do rio Doce, MG. Frações foliares foram amostradas em plantações de eucalipto nas idades de 2, 4 e 6 anos e posições de encosta e baixada. Amostras de solo e solo + fragmentos de folhas foram incubadas em dois níveis de umidade, temperatura e fertilização. A quantidade de C-CO 2 emitida pelo solo no período de 106 dias foi maior na temperatura de incubação de 32 o C do que a 23 o C, especialmente em solos de baixada, na idade de 2 anos. A respiração do solo foi intensificada oito vezes pela presença de fragmentos de folhas sobre o solo, principalmente em solos da baixada, e não houve efeito significativo para a idade. A decomposição foliar in situ, avaliada em um experimento de sacos de decomposição, apresentou perda média de no mínimo 50% durante 365 dias, alcançando 74% para o eucalipto em dois anos, na baixada. Após a comparação com uma mata nativa e dados da literatura nacional, não foi encontrada nenhuma restrição aparente na decomposição da fração foliar do eucalipto. Diferenças entre os resultados in vitro e in situ e entre a mata nativa e o eucalipto podem estar relacionadas a uma diferente comunidade de decompositores e à qualidade do substrato foliar.Palavras-chave: Respiração do solo; Sacos de decomposição; Emissão de CO 2 .

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N2O and CO2 emissions from three different tropical forest sites in the wet tropics of Queensland, Australia

Cited by 202 publications

References 27 publications

Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Seasonal dynamics in nitrous oxide emissions under different types of vegetation in saline-alkaline soils of the Yellow River Delta, China and implications for eco-restoring coastal wetland

Nitrous oxide fluxes from three forest types of the tropical mountain rainforests on Hainan Island, China

Forest Litter Decomposition as Affected by Eucalyptus Stand Age and Topography in South-Eastern Brazil1

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