Effects of rainfall events on soil CO<sub>2</sub> flux in a cool temperate deciduous broad‐leaved forest

Lee, Mi‐Sun; Nakane, Kaneyuki; Nakatsubo, Takayuki; Mo, Wen Hong; Koizumi, Hiroshi

doi:10.1046/j.1440-1703.2002.00498.x

Cited by 126 publications

(104 citation statements)

References 36 publications

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“…Similar responses have been reported in other trials (Kieft et al 1987;Lee et al 2002;Borken et al 2003;Lee et al 2004), although the factors responsible for the pulse are not fully understood. Displacement of soil air by water can affect the rate of CO 2 efflux from the soil; however Lee et al (2004) demonstrated that this phenomenon accounts merely for 0.4-0.8 µmol CO 2 m -2 s -1 in their study.…”

Section: Response Of Soil Respiration To Simulated Rainfallsupporting

confidence: 77%

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Saurette¹,

Chang²,

Thomas³

2006

Can. J. Soil. Sci.

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. 2006. Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta. Can. J. Soil Sci. 86: 257-268. Fast-growing hybrid poplars are being planted in the Canadian prairies to meet the increasing demand for fibre and environmental services of trees and forests; however, the impact of hybrid poplars on C dynamics and storage on previously farmed land is largely unknown for the boreal region. We measured soil CO 2 efflux along a chronosequence (3-, 9-, and 11-yr-old stands) of hybrid poplar (Populus deltoides × Populus × petrowskyana var. Walker) plantations and a control agricultural field from June to August 2004. Measurements were made between 0800 and 1800 with a portable Li-Cor 6400-09 system and were based on 4-5 min averaging. We also measured the response to simulated rainfall and the diurnal fluctuation of soil CO 2 efflux. Soil CO 2 efflux ranged from 1.30 µmol CO 2 m -2 s -1 in the 3-yr-old plantation to 5.41 µmol CO 2 m -2 s -1 in the agricultural control field, or from 0.17 µmol CO 2 m -2 s -1 kg -1 C (based on soil organic C content to a 0.4 m depth) in the 3-yr-old plantation to 1.09 µmol CO 2 m -2 s -1 kg -1 C in the 11-yr-old plantation. Simulated rainfall applied in the 3-yr-old plantation and a newly planted site resulted in an immediate pulse of CO 2 efflux, 2.90 and 2.54 µmol CO 2 m -2 s -1 , respectively, followed by an efflux rate sustained slightly above pre-irrigation levels. No secondary pulse of soil respiration was observed in the 2-h period following water application. Diurnal variation of soil respiration was found to be small between 0600 and 1900 in the agricultural control field, with values that varied from 2.66 to 3.17 µmol CO 2 m -2 s -1 . Continued monitoring of soil respiration and other C cycling processes in the chronosequence will improve our understanding of the potential for C sequestration in hybrid poplar plantations in northern Alberta. Les auteurs ont aussi mesuré la réaction à une pluie artificielle et la fluctuation diurne des efflux de CO 2 du sol. Ces derniers varient de 1,30 µmol de CO 2 par m 2 et par seconde pour la plantation de trois ans à 5,41 µmol pour la culture témoin, ou de 0,17 µmol de CO 2 par m 2 et par seconde, par kilo de C (teneur du sol en C organique à 0,4 m de profondeur), pour la plantation de trois ans à 1,09 µmol pour celle de onze ans. La pluie artificielle a immédiatement entraîné un efflux de CO 2 de 2,90 et de 2,54 µmol par m 2 et par seconde dans la plantation de trois ans et dans une nouvelle plantation, respectivement. Cette réaction a été suivie par un efflux stable, légèrement supérieur à celui observé avant l'irrigation. Aucun signe de respiration secondaire du sol n'a été observé au cours des deux heures qui ont suivi l'arrosage. La respiration du sol varie peu durant le jour, entre 6 h et 19 h, dans le champ cultivé, les valeurs fluctuant de 2,66 à 3,17 µmol de CO 2 par m 2 et par seconde. En poursuivant l'étude de la respiration du sol et d'autres processus du cycle du carbone dans cette chronoséquence...

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Section: Response Of Soil Respiration To Simulated Rainfallsupporting

confidence: 77%

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Saurette¹,

Chang²,

Thomas³

2006

Can. J. Soil. Sci.

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“…Another important variable affecting respiration rates is soil water content. Low CO 2 emissions are often observed when soils are either waterlogged or dry (Ball et al, 1999;Lee et al, 2002;Howard and Howard, 1993;Smith et al, 2003). In 2003 a continuous decrease of soil moisture was observed: from 22% at the end of May to 8% at early September.…”

Section: Co 2 Emissionsmentioning

confidence: 99%

Nitrogen oxides emission from two beech forests subjected to different nitrogen loads

Kitzler

Zechmeister‐Boltenstern

Holtermann³

et al. 2006

Biogeosciences

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Abstract. We analysed nitrogen oxides (N 2 O, NO) and carbon dioxide (CO 2 ) emissions from two beech forest soils close to Vienna, Austria, which were exposed to different nitrogen input from the atmosphere. The site Schottenwald (SW) received 20.2 kg N ha −1 y −1 and Klausenleopoldsdorf (KL) 12.6 kg N ha −1 y −1 through wet deposition. Nitric oxide emissions from soil were measured hourly with an automatic dynamic chamber system. Daily N 2 O measurements were carried out by an automatic gas sampling system. Measurements of nitrous oxide (N 2 O) and CO 2 emissions were conducted over larger areas on a biweekly (SW) or monthly (KL) basis by manually operated chambers. We used an autoregression procedure (time-series analysis) for establishing time-lagged relationships between N-oxides emissions and different climate, soil chemistry and N-deposition data. It was found that changes in soil moisture and soil temperature significantly effected CO 2 and N-oxides emissions with a time lag of up to two weeks and could explain up to 95% of the temporal variations of gas emissions. Event emissions after rain or during freezing and thawing cycles contributed significantly (for NO 50%) to overall N-oxides emissions. In the two-year period of analysis the annual gaseous N 2 O emissions at SW ranged from 0.64 to 0.79 kg N ha −1 y −1 and NO emissions were 0.24 to 0.49 kg N ha −1 per vegetation period. In KL significantly lower annual N 2 O emissions (0.52 to 0.65 kg N 2 O-N kg ha −1 y −1 ) as well as considerably lower NO-emissions were observed. During a three-month measurement campaign NO emissions at KL were 0.02 kg N ha −1 ), whereas in the same time period significantly more NO was emitted in SW (0.32 kg NO-N ha −1 ). Higher NCorrespondence to: B. Kitzler (barbara.kitzler@bfw.gv.at) oxides emissions, especially NO emissions from the high Ninput site (SW) may indicate that atmospheric deposition has an impact on emissions of gaseous N from our forest soils. At KL there was a strong correlation between N-deposition and N-emission over time, which shows that low N-input sites are especially responsive to increasing N-inputs.

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“…These models typically use soil temperature (Fang et al, 1998;Buchmann, 2000;Janssens and Pilegaard, 2003), soil moisture (Davidson et al, 1998;Epron et al, 2004;Sotta et al, 2004) as well as their interaction (Tufekcioglu et al, 2001; Lee et al, 2002;Tang and Baldocchi, 2005) for largescale soil respiration estimates. However, whereas soil temperature and moisture are good predictors of the temporal variation of soil respiration, they are inadequate to explain the spatial variations of soil respiration within a site and between sites (Xu and Qi, 2001;Tang and Baldocchi, 2005).…”

Section: Introductionmentioning

confidence: 99%

Biotic and abiotic factors controlling the spatial and temporal variation of soil respiration in an agricultural ecosystem

Han

Zhou

et al. 2007

Soil Biology and Biochemistry

123

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Based on the continuous observation of soil respiration and environmental factors in a maize ecosystem from late April to late September in 2005, the spatial and temporal variation of soil respiration and their controlling factors were analyzed. There was a significant spatial pattern for soil respiration at the plant scale and higher soil respiration rates tended to occur near the maize plant during the growing season. On one measurement moment, root biomass (B) in soil collars exerted significant influence on the spatial pattern of soil respiration under the relatively homogeneous environmental conditions. A linear relationship existed between soil respiration rate and root biomassAt daily scale, the coefficient a and b in Eq.(1) fluctuated because soil temperature (T) markedly reduced the intercept (b) of the linear equation and significantly increased its slope (a). Based on this, we developedEq. (2) indicated that increasing soil temperature ameliorated the positive relationship between soil respiration and root biomass in the daily variation of soil respiration. At seasonal scale, parameter a, b and c in Eq. (2) were affected mainly by soil moisture (W), soil temperature and net primary productivity (NPP), respectively. Thus, we developedto estimate soil respiration during the growing season. Eq. (3) demonstrated that soil temperature, soil moisture, root biomass and NPP combined affected soil respiration at season scale, and they accounted for 78% of the seasonal and spatial variation of soil respiration during the growing season. Eq. (3) not only took into account the influence of soil temperature and moisture, but also incorporated biotic factors as predictor variables, which would lead to an improvement in predictive capabilities of the model. Moreover, Eq. (3) could simulate instantaneous soil respiration rates from different sampling points and at different temporal scales, so it could explain not only the temporal variation of soil respiration, but also its spatial variation. Although this model might not be broadly applicable, the results suggested that there was significant spatial heterogeneity in soil respiration at the plant scale and root biomass dominated the small-scale spatial patterns of soil respiration. Thus, the models of soil respiration should not only take into account the influence of environmental factors, but also incorporate biotic factors in order to scale-up the chamber measurements of soil respiration to ecosystem level. r

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Effects of rainfall events on soil CO₂ flux in a cool temperate deciduous broad‐leaved forest

Cited by 126 publications

References 36 publications

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Nitrogen oxides emission from two beech forests subjected to different nitrogen loads

Biotic and abiotic factors controlling the spatial and temporal variation of soil respiration in an agricultural ecosystem

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Effects of rainfall events on soil CO2 flux in a cool temperate deciduous broad‐leaved forest

Cited by 126 publications

References 36 publications

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Some characteristics of soil respiration in hybrid poplar plantations in northern Alberta

Nitrogen oxides emission from two beech forests subjected to different nitrogen loads

Biotic and abiotic factors controlling the spatial and temporal variation of soil respiration in an agricultural ecosystem

Contact Info

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Effects of rainfall events on soil CO₂ flux in a cool temperate deciduous broad‐leaved forest