Soil N cycling processes in a pasture after the cessation of grazing and CO 2 enrichment

Zhong, Lei; Bowatte, Saman; Newton, Paul C. D.; Hoogendoorn, C. J.; Li, Frank Y.; Wang, Yanfen; Luo, Dongwen

doi:10.1016/j.geoderma.2015.05.009

Cited by 15 publications

(4 citation statements)

References 69 publications

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“…Nitrification, denitrification and respiration are major processes affecting soil greenhouse gases (i.e., CO 2 and N 2 O) emissions and soil nitrogen availability 1 2 3 4 5 6 . It has been proven that CO 2 emission from microbial respiration in soils was in excess of any other terrestrial-atmospheric carbon transactions, which is thus considered as the primary natural source for CO 2 emission 7 8 .…”

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confidence: 99%

“…A few researchers also adopted the soil incubation method 33 34 and 15 N isotope dilution technique 35 to quantify nitrification and denitrification processes. Nevertheless, the traditional measurement methods regarded nitrification, denitrification and respiration as three independent processes, whereas these three microbial processes have been proven to be interrelated to a certain extent 4 17 18 . Comparatively, the method of BaPS (Barometric Process Separation) could quantify the rates of nitrification, denitrification and respiration simultaneously through measuring the changes of gas pressure 36 .…”

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confidence: 99%

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Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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Leached cinnamon soil is the main agricultural soil distributed in the North China Plain. In this research, leached cinnamon soil samples were collected in the upper basin of Miyun Reservoir (northeast of Beijing, China). The BaPS method (Barometric Process Separation) was applied to measure nitrification, denitrification and respiration rates. The rates of nitrification, denitrification and respiration were 0–120.35 μg N/kg SDW h, 0–246.86 μg N/kg SDW h and 0.17–225.85 μg C/kg SDW h (Soil Dry Weight, SDW), respectively. The emission rates of CO2 and NxOy through nitrification, denitrification and respiration were 1.00–547.80 and 6.00–4850.65 μmol/h, respectively. The analysis of relationships between nitrification, denitrification and respiration rates indicated that these three microbial processes were interacted, which posed impacts on soil nitrogen availability. As indicated by the results, C:N ratio coupled with content could be taken as the indicators of content, which is usually the predominant form of N available to plants growing in soil. Results showed that content was the highest (i.e., >62.4 mg/kg) when C:N ratio was 5.30–8.40, meanwhile content was 3.71–4.39 mg/kg. Nevertheless, content was the lowest (i.e., <6.40 mg/kg) when C:N ratio was 9.2–12.10, meanwhile content was 3.41–4.35 mg/kg.

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confidence: 99%

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confidence: 99%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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“…There is a high probability that in all the soils with the addition of manure, the nitrification process occurred very intensively on the first day of incubation and the N 2 O, like a byproduct of the nitrification, was an additional source of N 2 O (Ciarlo et al, 2008;Martins et al, 2015;Włodarczyk et al, 2011;Zhong et al, 2015) when N 2 O reductase was still inactive. In flooded soil, there is a thin oxygenated layer at the interface between air and water, which may occur at the same time as the processes of nitrification and denitrification (Yu et al, 2006).…”

Section: N 2 O-reducing Activity (N 2 O/n 2 +N 2 O Ratio) Under Floodingmentioning

confidence: 99%

N2O-reducing activity of soil amended with organic and inorganic enrichments under flooded conditions

Ksiezopolska

Włodarczyk

Brzezińska

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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“…Previous studies have shown that soil microorganisms can maintain soil fertility ( Leff et al, ), while soil environmental conditions (such as temperature, moisture, C : N ratio, etc . ), long‐term fertilization, agricultural land use, and soil management may regulate both the abundances and functions of nitrifying and denitrifying communities ( Sheng et al, ; Zhong et al, ). To date, our knowledge is still scarce about the function of Mo in the soil microbial process ( Cvetkovic et al, ; Hille , ), particularly the microbial mechanisms by which Mo influences nitrification and denitrification potentials.…”

Section: Introductionmentioning

confidence: 99%

Characterization of vegetable nitrogen uptake and soil nitrogen transformation in response to continuous molybdenum application

Wen

Sun

et al. 2018

J. Plant Nutr. Soil Sci.

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Molybdenum (Mo), a plant micronutrient, is involved in nitrogen (N) cycling of global ecosystem, but little is known about its effect on soil N transformation especially the key processes nitrification and denitrification. A long-term field experiment was carried out to investigate the effects of continuous sufficient soil available Mo on vegetable N uptake and soil N transformation. The experiment consisted of three treatments: control (CK), Mo deficiency (NPK), and Mo application (NPK+Mo). The results show that (1) after a 7-year-experiment, continuous Mo application significantly increased soil available Mo content. (2) Compared to the NPK treatment, NPK+Mo treatment showed an increase of 11, 18, and 8% in the cumulative crop yield, plant N uptake, and N fertilizer use efficiency. (3) With continuous Mo application, the soil NO À 3 -N, NH þ 4 -N, microbial biomass N, and total N contents were reduced by 14, 29, 40, and 12%, the soil nitrate reductase (NR) and nitrite reductase (NiR) activities were reduced by 14 and 8%, as well as the potential denitrification activity (PDA) and gross nitrification rate (GNR) were decreased by 64 and 80%, respectively. Additionally, continuous Mo application decreased the abundance of ammonia-oxidizing archaea (AOA) and increased the abundance of narG-containing denitrifiers (narG) and nirK-type nitrite reducers (nirK) significantly. The data suggest that a deficiency in soil available Mo may induce the risk of soil N accumulation and environmental N emission in vegetable soil, whereas continuous Mo application could mitigate this risk by increasing crop yield and N uptake and, by decreasing soil N residues, soil nitrification and denitrification.

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Soil N cycling processes in a pasture after the cessation of grazing and CO 2 enrichment

Cited by 15 publications

References 69 publications

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

N2O-reducing activity of soil amended with organic and inorganic enrichments under flooded conditions

Characterization of vegetable nitrogen uptake and soil nitrogen transformation in response to continuous molybdenum application

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