Transformation of nitrogen and nitrous oxide emission from grassland soils as affected by compaction

Bhandral, R.; Saggar, Surinder; Bolan, Nanthi; Hedley, M. J.

doi:10.1016/j.still.2006.10.006

Cited by 78 publications

(64 citation statements)

References 32 publications

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“…Consequently, this led to increased anaerobiosis which is favorable for N 2 O production by denitrification (Renault and Sierra 1994;van Groenigen et al 2005;Bhandral et al 2007). Moreover, our results showed that the DEA increased after compression.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, compaction, as a physical factor, has not received as much attention as the above chemical factors associated with denitrification. Furthermore, related studies mainly focused on the impact of compaction on soil N 2 O emission in agriculture systems and forest systems (Sitaula et al 2000;Yamulki and Jarvis 2002;Teepe et al 2004;Bhandral et al 2007). At present, limited data are available on denitrification (Bakken et al 1987;Douglas and Crawford 1993), particularly lacking quantitative evidence on denitrification in urban soils.…”

Section: Introductionmentioning

confidence: 99%

“…Urban soils could enrich nitrate and provide the substrate for denitrification. Bhandral et al (2007) reported that in compacted soil, the highest N 2 O was emitted from the treatment with nitrate application compared to those from other N sources like urine, ammonium, and urea, suggesting that denitrification in soils with high nitrate could probably be promoted under compaction. Therefore, studying the effects of compaction on urban soil denitrification is needed for better understanding on how urbanization affects urban N biogeochemical cycling and urban greenhouse gas emission.…”

Section: Introductionmentioning

confidence: 99%

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Compaction stimulates denitrification in an urban park soil using 15N tracing technique

Deng

Rensing

et al. 2013

Environ Sci Pollut Res

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Soils in urban areas are subjected to compaction with accelerating urbanization. The effects of anthropogenic compaction on urban soil denitrification are largely unknown. We conducted a study on an urban park soil to investigate how compaction impacts denitrification. By using 15 N labeling method and acetylene inhibition technique, we performed three coherent incubation experiments to quantify denitrification in compacted soil under both aerobic and anaerobic conditions. Uncompacted soil was set as the control treatment. When monitoring soil incubation without extra substrate, higher nitrous oxide (N 2 O) flux and denitrification enzyme activity were observed in the compacted soil than in the uncompacted soil. In aerobic incubation with the addition of K 15 NO 3 , N 2 O production in the compacted soil reached 10.11 ng N h −1 g −1 as compared to 0.02 ng N h −1 g −1 in the uncompacted soil. Denitrification contributed 96 % of the emitted N 2 O in the compacted soil and 36 % of the emitted N 2 O in the uncompacted soil; total denitrification rate was higher in the compacted soil (up to 79.35 ng N h −1 g −1 ) than in the uncompacted soil (0.11 ng N h −1 g −1 ). Under anaerobic incubation with the addition of K 15 NO 3 , no statistical difference in total N losses and 15 N-(N 2 O+N 2 ) flux between the uncompacted soil and the compacted soil was detected. Compaction promoted soil denitrification and may impact urban N biogeochemical cycling.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compaction stimulates denitrification in an urban park soil using 15N tracing technique

Deng

Rensing

et al. 2013

Environ Sci Pollut Res

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“…Higher emissions from A. mangium when compared to other forest types were also reported by Konda et al (2010). Furthermore, it should be noted that the soil at ARF had a relatively high bulk density and a low porosity, both of which may have contributed to the development of anoxic conditions and the stimulation of denitrification (Bhandral et al 2007).…”

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confidence: 70%

Fluxes and production pathways of nitrous oxide in different types of tropical forest soils in Thailand

Vanitchung

Conrad

Harvey

et al. 2011

Soil Science and Plant Nutrition

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Nitrous oxide (N 2 O) emissions from the soil surface of five different forest types in Thailand were measured using the closed chamber method. Soil samples were also taken to study the N 2 O production pathways. The monthly average emissions (AESD, n ¼ 12) of N 2 O from dry evergreen forest (DEF), hill evergreen forest (HEF), moist evergreen forest (MEF), mixed deciduous forest (MDF) and acacia reforestation (ARF) were 13.0 AE 8.2, 5.7 AE 7.1, 1.2 AE 12.1, 7.3 AE 8.5 and 16.7 AE 9.2 mg N m À2 h À1, respectively. Large seasonal variations in fluxes were observed. Emission was relatively higher during the wet season than during the dry season, indicating that soil moisture and denitrification were probably the main controlling factors. Net N 2 O uptake was also observed occasionally. Laboratory studies were conducted to further investigate the influence of moisture and the N 2 O production pathways. Production rates at 30% water holding capacity (WHC) were 3.9 AE 0.2, 0.5 AE 0.06 and 0.87 AE 0.01 ng N 2 O-nitrogen (N) g-dw À1 day À1 in DEF, HEF and MEF respectively. At 60% WHC, N 2 O production rates in DEF, HEF and MEF soils increased by factors of 68, 9 and 502, respectively. Denitrification was found to be the main N 2 O production pathway in these soils except in MEF.

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“…The degraded physical environment of the soil due to compaction influences mainly the growth and development of roots. Soil compaction increases mechanical impendence, creates unfavourable growing conditions for roots, and restricts oxygen, water and nutrients supply (Bhandral et al, 2007). Changes in physical properties resulted also in the biological activity of compacted soil.…”

Section: Discussionmentioning

confidence: 99%

Tractor traffic and nitrogen fertilization affect the herbage production of the red clover/grass sward

Głąb

Żabiński

Sadowska

2016

Zemdirbyste-Agriculture

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In recent years, soil compaction caused by agricultural machinery has been recognized as one of the main factors that can lower yields of perennial crops. At the same time changes in grassland fertilization intensity are observed. The objectives of the present study were to evaluate the interaction of different N fertilization rates and the intensity of tractor passes. This study was conducted as a field experiment located on a sandy loam soil classified as Mollic Fluvisol in Mydlniki near Krakow, Poland over a four-year period (2009)(2010)(2011)(2012). The field experiment was established with four replications in a split-plot design with fertilization as the main plot and tractor traffic as the subplot. Three levels of N fertilization: untreated (control), 80 and 160 kg ha -1 N, and four levels of tractor traffic intensity were applied using the following numbers of tractor passes: no passes (control), two passes, four passes and six passes. Nitrogen (N) fertilization significantly affected the percentage of only three species -Trifolium pratense, Lolium perenne and Festuca pratensis in the sward. T. pratense was negatively affected by with higher N rates but two grasses, L. perenne and F. pratensis, showed the opposite response. The tractor traffic significantly affected T. pratense and L. perenne occurrence in the swards. The percentage of T. pratense in the sward was reduced by tractor traffic, and this space was occupied by L. perenne. Changes in the botanical composition reflected in the herbage production. All investigated grass species increased biomass productivity in direct proportion to N rates. Only T. pratense was negatively affected by nitrogen fertilization and since 2011 it started to disappear from the swards treated with higher nitrogen rates. For all investigated components of the mixture no interaction between treatments, tractor traffic and nitrogen fertilization was observed.

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Transformation of nitrogen and nitrous oxide emission from grassland soils as affected by compaction

Cited by 78 publications

References 32 publications

Compaction stimulates denitrification in an urban park soil using 15N tracing technique

Compaction stimulates denitrification in an urban park soil using 15N tracing technique

Fluxes and production pathways of nitrous oxide in different types of tropical forest soils in Thailand

Tractor traffic and nitrogen fertilization affect the herbage production of the red clover/grass sward

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