Soil Denitrification—Significance, Measurement, and Effects of Management

Aulakh, M. S.; Doran, John W.; Mosier, A. R.

doi:10.1007/978-1-4612-2844-8_1

Cited by 240 publications

(129 citation statements)

References 205 publications

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“…Isto também pode ser um indício de que tanto a disponibilidade de C, como a de N-NO 3 -podem estar limitando a produção de N 2 O pelo processo de desnitrificação. De acordo com Aulakh et al (1992), a desnitrificação depende da concentração de N-NO 3 -e de C-orgânico do solo e D' Haene et al (2003) encontraram uma grande correlação entre o potencial de desnitrificação do solo e o suprimento de N e C em condições laboratoriais.…”

Section: Resultsunclassified

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Carmo

Andrade

Cerri³

et al. 2005

Rev. Bras. Ciênc. Solo

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Section: Resultsunclassified

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Carmo

Andrade

Cerri³

et al. 2005

Rev. Bras. Ciênc. Solo

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“…Multiple regression analysis indicated that soil pH was the best predictor of the denitrification rate in the NECT (R 2 ¼ 0.48, n ¼ 19, p < 0.01). A previous study showed that a pH of 6.0-8.0 was optimal for denitrification and that denitrification was inhibited under acidic conditions (reviewed in Aulakh et al 1992). The optimum pH for short-term denitrifying enzyme activity (DEA) was at or near neutral soil pH, while the optimum pH for long-term denitrification was between 6.6 and 8.3 (Š imek et al 2002).…”

Section: Discussion Denitrification Ratementioning

confidence: 99%

Soil pH was the main controlling factor of the denitrification rates and N₂/N₂O emission ratios in forest and grassland soils along the Northeast China Transect (NECT)

Sun

Zhuge

Zhang

et al. 2012

Soil Science and Plant Nutrition

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“…Denitrification results in loss of fertilizer N and the nitrous oxide emitted contributes to global warming and the destruction of the ozone layer in the stratosphere; thus, it is important to quantify denitrification rates in terrestrial ecosystems (Aulakh et al 1992). However, this quantification has been impeded by the extreme spatial and temporal variability associated with denitrification activity.…”

mentioning

confidence: 99%

“…However, while some authors report minimum temperatures of -2 to 10°C for denitrification (Bailey 1976;Smid and Beauchamp 1976;Dorland and Beauchamp 1991), others have observed that denitrification does not occur in soils at temperatures ≤5°C (Jacobson and Alexander 1980;Aulakh et al 1992). These divergent results could be due to the capacity of denitrifiers to adapt to their environmental temperature or to temperature-induced shifts in the structure of the soil denitrifier community (Kaplan et al 1977;King and Nedwell 1984).…”

mentioning

confidence: 99%

Seasonal response of denitrifiers to temperature in a Quebec cropped soil

Prévost¹,

Laliberté²,

Bochove³

1999

Can. J. Soil. Sci.

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. 1999. Seasonal response of denitrifiers to temperature in a Quebec cropped soil. Can. J. Soil Sci. 79: 551-556. While some studies indicate no denitrification activity in early spring, others have demonstrated that denitrifiers from temperate region soils can adapt to low temperatures. The aim of the present paper was to study how seasonal changes in temperature affect denitrifying enzyme activity (DEA) in a cropped humic gleysol located in a cold temperate climate (Quebec). Soil was sampled monthly during a 16-mo period and DEA was measured at nine temperatures from 2 to 35°C. A seasonal effect of temperature on DEA was significant at all incubation temperatures and was more important in November and in May-June. The effect of temperature on DEA was better fitted with the square root model of Ratkowsky than with the Arrhenius equation. The regression coefficient b (Ratkowsky parameter) varied seasonally with a trend similar to that of DEA. These results show that the Ratkowsky model should be used instead of Arrhenius equation to describe the effect of cold temperature on denitrification.Key words: Denitrification, temperature, cold, Arrhenius equation, Ratkowsky model Pelletier, F., Prévost, D., Laliberté, G. et van Bochove, E. 1999. Activité saisonnière des dénitrificateurs en fonction des températures dans un sol cultivé du Québec. Can. J. Soil Sci. 79: 551-556. Certaines études affirment que la dénitrification dans les sols est négligeable au printemps, alors que d'autres ont démontré que les dénitrificateurs des sols des régions tempérées peuvent s'adapter aux basses températures. Le but de cette étude a été de déterminer l'effet des températures saisonnières sur la dénitrification dans un gleysol humique cultivé sous un climat froid tempéré (Québec). Des échantillons de sol ont été prélevés mensuellement pendant 16 mois et l'activité de dénitrification a été mesurée à neuf températures variant de 2 à 35°C. Un effet saisonnier de température sur l'activité de dénitrification a été observé pour toutes les températures d'incubation mais a été plus important en novembre et en mai-juin. L'effet de la température sur la dénitrification a été mieux ajusté au modèle "racine carrée" de Ratkowsky qu'à l'équation d'Arrhénius. En effet, la variation saisonnière du coefficient de régression b (paramètre de Ratkowsky) a été similaire à celle de l'activité de dénitrification. Ces résultats suggèrent l'utilisation du modèle Ratkowsky pour décrire l'effet des basses températures sur la dénitrification.

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Soil Denitrification—Significance, Measurement, and Effects of Management

Cited by 240 publications

References 205 publications

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Soil pH was the main controlling factor of the denitrification rates and N₂/N₂O emission ratios in forest and grassland soils along the Northeast China Transect (NECT)

Seasonal response of denitrifiers to temperature in a Quebec cropped soil

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Soil Denitrification—Significance, Measurement, and Effects of Management

Cited by 240 publications

References 205 publications

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Disponibilidade de nitrogênio e fluxos de N2O a partir de solo sob pastagem após aplicação de herbicida

Soil pH was the main controlling factor of the denitrification rates and N2/N2O emission ratios in forest and grassland soils along the Northeast China Transect (NECT)

Seasonal response of denitrifiers to temperature in a Quebec cropped soil

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Soil pH was the main controlling factor of the denitrification rates and N₂/N₂O emission ratios in forest and grassland soils along the Northeast China Transect (NECT)