Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China

Pang, Junzhu; Wang, Xiaoke; Mu, Yujing; Ouyang, Zhiyun; Liu, Wenzhao

doi:10.1007/s00374-009-0403-x

Cited by 38 publications

(23 citation statements)

References 27 publications

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“…Considerable variability in N 2 O emissions was found between sites, within orchards and treatment replicates and between seasons, reflected in the high standard errors of the means (Table 3). The magnitude of the maximum daily values more closely followed N 2 O emissions from Australian rainforests than perennial tree crops receiving N fertiliser and irrigation (Pang et al 2009;Rowlings et al 2013;Xia et al 2014;Ge et al 2015). Pang et al (2009) reported an average of 9.35 g N 2 O-N ha -1 day -1 and Ge et al (2015) reported an average of a much higher 36 g N 2 O-N ha -1 day -1 for apple orchards in China -both were orders of magnitude above the average reported here.…”

Section: Temporal and Spatial Variability Of N 2 O Emissionssupporting

confidence: 60%

“…The magnitude of the maximum daily values more closely followed N 2 O emissions from Australian rainforests than perennial tree crops receiving N fertiliser and irrigation (Pang et al 2009;Rowlings et al 2013;Xia et al 2014;Ge et al 2015). Pang et al (2009) reported an average of 9.35 g N 2 O-N ha -1 day -1 and Ge et al (2015) reported an average of a much higher 36 g N 2 O-N ha -1 day -1 for apple orchards in China -both were orders of magnitude above the average reported here. In another study of horticulture crops from sub-tropical soils, Huang et al (2012) reported average daily N 2 O emissions of 4.6, 5.9 and 3.3 g N 2 O-N ha -1 day -1 for mango, custard apple and pineapple respectively.…”

Section: Temporal and Spatial Variability Of N 2 O Emissionssupporting

confidence: 60%

“…These values represent very low annual N 2 O emissions compared with other cropping systems (Scheer et al 2012Shi et al 2013;De Antoni Migliorati et al 2014). In contrast, N 2 O emissions from apple orchards were reported as 3.22-44.30 kg N 2 O-N ha -1 year -1 in China (Pang et al 2009;Xia et al 2014). Furthermore, the results from this study are at the low end reported for grapes (0.56-3.92 kg N 2 O-N ha -1 year -1 ; Garland et al 2014), and similar to those reported for almonds (0.53-0.80 kg N 2 O-N ha -1 year -1 ; Schellenberg et al 2012).…”

Section: Temporal and Spatial Variability Of N 2 O Emissionsmentioning

confidence: 83%

“…This parameter is difficult to measure and so WFP is used as a proxy in field studies investigating N 2 O emissions (Pang et al 2009;Rowlings et al 2012); however, gas diffusion in soils depends on the relative volumetric fractions of water and air. Furthermore, volumes of air and water in soil at given values of WFP will be influenced by the bulk density of the soil (Castellano et al 2010).…”

Section: Temporal and Spatial Variability Of N 2 O Emissionsmentioning

confidence: 99%

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Benchmarking nitrous oxide emissions in deciduous tree cropping systems

Swarts

Montagu²,

Oliver

et al. 2016

Soil Res.

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Abstract. Nitrous oxide (N 2 O) emissions contribute 6% of the global warming effect and are derived from the activity of soil-based microorganisms involved in nitrification and denitrification processes. There is a paucity of greenhouse gas emissions data for Australia's horticulture industry. In this study we investigated N 2 O flux from two deciduous fruit tree crops, apples and cherries, in two predominant growing regions in eastern Australia, the Huon Valley in southern Tasmania (Lucaston -apples and Lower Longley -cherries), and high altitude northern New South Wales (Orange -apples and Young -cherries). Estimated from manual chamber measurements over a 12-month period, average daily emissions were very low ranging from 0.78 g N 2 O-N ha -1 day -1 in the apple orchard at Lucaston to 1.86 g N 2 O-N ha -1 day -1 in the cherry orchard in Lower Longley. Daily emissions were up to 50% higher in summer (maximum 5.27 g N 2 O-N ha -1 day -1 at Lower Longley) than winter (maximum 2.47 g N 2 O-N ha -1 day -1 at Young) across the four trial orchards. N 2 O emissions were~40% greater in the inter-row than the tree line for each orchard. Daily flux rates were used as a loss estimate for annual emissions, which ranged from 298 g N 2 O-N ha -1 year -1 at Lucaston to 736 g N 2 O-N ha -1 year -1 at Lower Longley. Emissions were poorly correlated with soil temperature, volumetric water content, water filled porosity, gravimetric water content and matric potential -with inconsistent patterns between sites, within the tree line and inter-row and between seasons. Stepwise linear regression models for the Lucaston site accounted for less than 10% of the variance in N 2 O emissions, for which soil temperature was the strongest predictor. N 2 O emissions in deciduous tree crops were among the lowest recorded for Australian agriculture, most likely due to low rates of N fertiliser, cool temperate growing conditions and highly efficient drip irrigation systems. We recommend that optimising nutrient use efficiency with improved drainage and a reduction in soil compaction in the inter-row will facilitate further mitigation of N 2 O emissions.

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Section: Temporal and Spatial Variability Of N 2 O Emissionssupporting

confidence: 60%

Section: Temporal and Spatial Variability Of N 2 O Emissionssupporting

confidence: 60%

Section: Temporal and Spatial Variability Of N 2 O Emissionsmentioning

confidence: 83%

Section: Temporal and Spatial Variability Of N 2 O Emissionsmentioning

confidence: 99%

See 2 more Smart Citations

Benchmarking nitrous oxide emissions in deciduous tree cropping systems

Swarts

Montagu²,

Oliver

et al. 2016

Soil Res.

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“…All bottles were incubated at 25 C in the dark for 24 h. Gas samples (1 mL) were withdrawn from bottles by glass precision gas syringes and were injected into N 2 -filled (1 atm) 29.0 mL vials capped with butyl rubber septa. These diluted gas samples were then analyzed for N 2 O by a gas chromatograph (SP3410, Beijing Analytical Instrument Factory) connected to an ECD detector as described previously by Pang et al (2009), and the amount of N 2 O in the headspace and PDA were calculated as indicated by Schinner et al (1996).…”

Section: Potential Denitrification Activitymentioning

confidence: 99%

Effect of pyrene on denitrification activity and abundance and composition of denitrifying community in an agricultural soil

Guo

Deng

Qiao

et al. 2011

Environmental Pollution

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a b s t r a c tToxicity of pyrene on the denitrifiers was studied by spiking an agricultural soil with pyrene to a series of concentrations (0e500 mg kg À1 ) followed by doseeresponse and dynamic incubation experiments. Results showed a positive correlation between potential denitrification activity and copy numbers of denitrifying functional genes (nirK, nirS and nosZ), and were both negatively correlated with pyrene concentrations. Based on the comparison of EC 50 values, denitrifiers harboring nirK, nirS or nosZ gene were more sensitive than denitrification activity, and denitrifiers harboring nirS gene were more sensitive than that harboring nirK or nosZ genes. Seven days after spiking with EC 50 concentration of pyrene, denitrifiers diversity decreased and community composition changed in comparison with the control. Phylogenetic analyses of three genes showed that the addition of pyrene increased the proportion of Bradyrhizobiaceae, Rhodospirillales, Burkholderiales and Pseudomonadales. Some species belonging to these groups were reported to be able to degrade PAHs.

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Tree-scale spatial variation of soil respiration and its influence factors in apple orchard in Loess Plateau

Wang

Guo

Jiang

et al. 2015

Nutr Cycl Agroecosyst

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Although small-scale spatial variation of soil respiration has been studied in a wide variety of ecosystems, there are few studies investigating the spatial variation of soil respiration at tree-scale. An inaccurate estimation of soil respiration would be obtained if the spatial variation of soil respiration was ignored. Soil respiration, soil temperature, soil moisture and fine roots biomass were measured in different directions (0, 120, and 240°) at different distances (0.5 and 2 m radial distance) from the trunk of three representative trees for the period 2011-2013 in a mature apple orchard established on the Loess Plateau in 2000. The mean soil respiration rate at 0.5 m-distance was 21, 35 and 42 % higher, respectively. The cumulative soil respiration at 0.5 m-distance was 20, 31, and 38 % higher; and the temperature sensitivity of soil respiration (Q 10 ) at 0.5 m-distance was 15, 30 and 12 % higher than that at 2 m-distance in 2011, 2012, and 2013, respectively. There was no significant difference in soil temperature and moisture between 0.5 m-and 2 m-distance, whereas fine root biomass at 0.5 m-distance was 64, 108, and 114 % higher than that at 2 m-distance in 2011-2013, respectively. Fine root biomass had a positive linear relationship with accumulative soil respiration and Q 10 . Mean annual cumulative soil respiration was 0.46, 0.45, and 0.57 kg C m -2 year -1 in 2011-2013, respectively. Fine root biomass contributed to the spatial variation of soil respiration in apple orchard, and soil respiration at 2 m-distance could represent the C respired in orchard level.

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Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China

Cited by 38 publications

References 27 publications

Benchmarking nitrous oxide emissions in deciduous tree cropping systems

Benchmarking nitrous oxide emissions in deciduous tree cropping systems

Effect of pyrene on denitrification activity and abundance and composition of denitrifying community in an agricultural soil

Tree-scale spatial variation of soil respiration and its influence factors in apple orchard in Loess Plateau

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