Spatial Variability of Methane, Nitrous Oxide, and Carbon Dioxide Emissions from Drained Grasslands

Dasselaar, A. van den Pol–van; Corré, W.J.; Priemé, Anders; Klemedtsson, Åsa Kasimir; Weslien, Per; Klemedtsson, Leif; Stein, Alfred; Oenema, O.

doi:10.2136/sssaj1998.03615995006200030039x

Cited by 71 publications

(29 citation statements)

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“…Several authors have reported on the CH 4 emissions from drained organic soils (Glenn et al , 1993; e.g. Nykänen et al , 1995; Van den Pol‐van Dasselaar et al , 1998). All found that drained organic soils used for farming were a negligible source or sink of CH 4 .…”

Section: Resultsmentioning

confidence: 99%

Carbon exchange of grazed pasture on a drained peat soil

Nieveen

Campbell

Schipper

et al. 2005

Global Change Biology

126

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Land-use changes have contributed to increased atmospheric CO 2 concentrations. Conversion from natural peatlands to agricultural land has led to widespread subsidence of the peat surface caused by soil compaction and mineralization. To study the net ecosystem exchange of carbon (C) and the contribution of respiration to peat subsidence, eddy covariance measurements were made over pasture on a welldeveloped, drained peat soil from 22 May 2002 to 21 May 2003. The depth to the water table fluctuated between 0.02 m in winter 2002 to 0.75 m during late summer and early autumn 2003. Peat soil moisture content varied between 0.6 and 0.7 m 3 m À3 until the water table dropped below 0.5 m, when moisture content reached 0.38 m 3 m À3 . Neither depth to water table nor soil moisture was found to have an effect on the rate of nighttime respiration (ranging from 0.4-8.0 lmol CO 2 m À2 s À1 in winter and summer, respectively). Most of the variance in night-time respiration was explained by changes in the 0.1 m soil temperature (r 2 5 0.93). The highest values for daytime net ecosystem exchange were measured in September 2002, with a maximum of À17.2 lmol CO 2 m À2 s À1 . Grazing events and soil moisture deficiencies during a short period in summer reduced net CO 2 exchange. To establish an annual C balance for this ecosystem, non-linear regression was used to model missing data. Annually integrated (CO 2 ) C exchange for this peat-pasture ecosystem was 45 AE 500 kg C ha À1 yr À1 . After including other C exchanges (methane emissions from cows and production of milk), the net annual C loss was 1061 AE 500 kg C ha À1 yr À1 .

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Section: Resultsmentioning

confidence: 99%

Carbon exchange of grazed pasture on a drained peat soil

Nieveen

Campbell

Schipper

et al. 2005

Global Change Biology

126

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“…Kelly & Canham 1992; Halvorson et al . 1994; Palmer & White 1994; van den Pol‐van Dasselaar et al . 1998).…”

Section: Discussionunclassified

Temporal changes in spatial patterns of soil moisture following disturbance: an experimental approach

et al. 2002

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Summary 1We quantified changes in spatial heterogeneity of soil moisture over 2.5 years in a Pinus elliottii Engelm. forest, following disturbance and succession. We harvested or girdled upper canopy trees and measured three components of heterogeneity -global (non-spatial) variability, spatial dependence and temporal persistence -in replicate plots, using sample points arrayed at a fine scale (0.5-6 m) nested within a coarser scale (5-60 m). 2 Global variability increased after disturbance and then declined, eventually returning to the level recorded in an undisturbed plot. Harvesting resulted in greater, more rapid and more prolonged changes in global variability than girdling. 3 Geostatistical parameters for measuring spatial dependence were largely unaffected by disturbance. Spatial dependence was, however, quite variable across replicate plots and was stronger at the finer sampling scale. 4 Spearman rank correlations showed that the spatial pattern of soil moisture had greater long-term persistence in the undisturbed and girdled plots than in the harvested plots. 5 Some elements of spatial heterogeneity appear to vary over time in a predictable manner. Detection of temporal trends may be improved if multiple components of heterogeneity are quantified, more than one scale of observation is used, replicate plots are employed and sole reliance on geostatistics is avoided.

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“…High temporal variability of emissions from a fertilized banana plantation in Costa Rica resulted in an underestimation of mean annual N20 emissions if monthly sampled flux data are extrapolated compared to extrapolation of fluxes sampled on a fertilization event basis [Veldkamp and Keller, 1997]. Temporal variability and short-time responses of fluxes on changes in controlling factors has been demonstrated using automated sampling and analysis systems [Brumme and Beese, 1992;Crill et al, 1999].…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal variability of nitrogen oxide and methane fluxes from a fertilized tree plantation in Costa Rica

Weitz¹,

Keller²,

Linder³

et al. 1999

J. Geophys. Res.

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Abstract. Nitric oxide (NO), nitrous oxide (N20), and methane (CH4) are naturally produced and consumed by soil biogeochemical processes. Naturally high variation between trace gas fluxes may temporarily increase due to agricultural management. We studied spatial and temporal variability of fluxes in the context of a 3-year field experiment established to identify and quantify N20 fluxes and controlling factors using automated field measurements. We measured trace gas fluxes, soil temperature, and moisture from fertilized and unfertilized balsa (Ochroma lagopus) plantations. Combining spatial and temporal sampling we evaluate if automatically measured time series of N20 emissions are representative of overall mean fluxes from fertilized loam under balsa. Soil trace gas fluxes were measured manually at 36 randomly distributed sampling locations per plot. Mean plot emissions were evaluated against fluxes measured by seven chambers commonly used for routine bimonthly manual measurements and against N20 emissions measured by two automated chambers at 4.6-hour sampling intervals. Trace gas fluxes were highly variable over 40 x 40 m plots. Nitrogen oxide fluxes were mainly spatially independent. Fertilization increased nitrogen oxide emissions but did not introduce spatial dependency of flux data. Within about 6 weeks fluxes approached pre-fertilization level again. Given high spatial variation of nitrogen oxide fluxes we find that automatically measured N20 fluxes represent the nature of the flux response well and are in the range of fluxes indicated by spatial sampling. When soils were relatively dry fertilization inhibited CH 4 uptake.

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Spatial Variability of Methane, Nitrous Oxide, and Carbon Dioxide Emissions from Drained Grasslands

Cited by 71 publications

References 0 publications

Carbon exchange of grazed pasture on a drained peat soil

Carbon exchange of grazed pasture on a drained peat soil

Temporal changes in spatial patterns of soil moisture following disturbance: an experimental approach

Spatial and temporal variability of nitrogen oxide and methane fluxes from a fertilized tree plantation in Costa Rica

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