NO and N2O emissions from agricultural fields in the North China Plain: Origination and mitigation

Zhang, Yuanyuan; Mu, Yujing; Zhou, Yi; Tian, Di; Liu, Junfeng; Zhang, Chenglong

doi:10.1016/j.scitotenv.2016.01.209

Cited by 49 publications

(25 citation statements)

References 47 publications

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“…these results were also obtained in our previous study (Ding et al 2015). Other researchers also have reported that the N 2 O emission mainly resulted from the nitrification process of NH 4 -N in soils (Uchida et al 2013;Zhang et al 2016).…”

Section: Treatment Denitrification Losssupporting

confidence: 89%

Gaseous losses of fertilizer nitrogen from a citrus orchard in the red soil hilly region of Southeast China

Ding

Zheng

Zhang

et al. 2017

Soil Science and Plant Nutrition

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The gaseous losses of fertilizer nitrogen (N) applied to agroecosystems are a major contributor to a host of environmental problems, inefficient production systems, and decreased N-use efficiency. These losses lead to the wastage of resources, increasing the greenhouse effect and harming human health. The red soil hilly region of Southeast China houses the biggest orchard area of the world, and nitrogen fertilizers are usually heavily applied to the orchard systems in China. Therefore, this study aimed to measure the gaseous losses of the fertilizer N by ammonia (NH 3) volatilization and denitrification losses using the venting method and acetylene inhibition method respectively, and to assess the potential environmental risk of NH 3 and nitrous oxide (N 2 O) emission from this orchard system based on the recent orchard management practices. An experiment was conducted in an Ougan citrus (Citrus reticulata Blanco 'Suavissima') orchard in the red soil hilly region of Southeast China. Three fertilization treatments, including the control (no N fertilizer, CK), poultry manure (at a rate of 6.3 t/ha, OM), and conventional fertilization (OM 6.3 t/ha + chemical fertilizer 393 kg N/ha, CF), were used. In all treatments, the fertilizers were incorporated into the soil after application. The test results, which were continuously determined within one year, indicated that the NH 3 volatilization losses accounted for 4.5% of the OM nitrogen (OM-N) and 2.9% of the CF nitrogen (CF-N), whereas the denitrification N losses accounted for 2.1% of the OM-N and 2.9% of the CF-N. Overall, the total gaseous N losses (including NH 3 volatilization losses and denitrification N losses) were 5.8% in the CF treatment. A relatively higher N 2 O flux, accounting for 1.8% of the CF-N, emitted from the CF treatment.

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Section: Treatment Denitrification Losssupporting

confidence: 89%

Gaseous losses of fertilizer nitrogen from a citrus orchard in the red soil hilly region of Southeast China

Ding

Zheng

Zhang

et al. 2017

Soil Science and Plant Nutrition

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“…Several studies have reported that nitrification was the major N 2 O production process in fluvo-aquic soils (Wan et al 2009;Cui et al 2012;Zhang et al 2016). We obtained similar results that nitrification is the main contributor to N 2 O emissions in the tested soil for the following reasons: (i) only urea addition resulted in the greatest increase in N 2 O emission, while DCD and C 2 H 2 reduced total N 2 O emissions by 86.7 and 93.0 %, respectively, due to their inhibitory effects on ammonia oxidation (McCarty 1999); (ii) the significant correlation between net nitrification rate and N 2 O emission indicated that nitrification was a key regulating process of N 2 O production in the fluvo-aquic soil; (iii) DOC content in the soil was low, which also supported the hypothesis that the weak contribution of denitrification to N 2 O emission in the fluvo-aquic soil might be primarily attributed to the low content and availability of soil organic carbon for denitrifiers (Wan et al, 2009); and (iv) all samples were conducted aerobically with the moisture content maintained at 55 % WFPS, which was more favorable to nitrification than denitrification (Bateman and Baggs 2005).…”

Section: Discussionmentioning

confidence: 99%

Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea

Wang

Zhang

Shen

et al. 2016

Environ Sci Pollut Res

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Ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) are crucial for N 2 O emission as they carry out the key step of nitrification. Dicyandiamide (DCD) and acetylene (C 2 H 2 ) are typical nitrification inhibitors (NIs), while the comparative effects of these NIs on N 2 O production and ammonia oxidizers' (AOB and AOA) growth are unclear. Four treatments including a control, urea, urea + DCD, and urea + C 2 H 2 were set up to investigate their effect of inhibiting soil nitrification, nitrification-related N 2 O emission as well as the growth of ammonia oxidizers with a fluvo-aquic soil using microcosms for 28 days. N 2 O emission and net nitrification rate increased after the application of urea, but were significantly restrained in urea + NI treatments, while C 2 H 2 was more effective in reducing N 2 O emission and nitrification rate than DCD. The abundance of AOB, which was significantly correlated with N 2 O emission and net nitrification rate, was more inhibited by C 2 H 2 than DCD. Furthermore, the application of urea in all the soils had little impact on the AOA community, while obvious shifts of AOB community structure were found compared with the control. All AOB sequences fell within Nitrosospira cluster 3, and the AOA community was clustered to group 1.1b. Collectively, it indicated that application of urea combined with NIs (DCD or C 2 H 2 ) could potentially alter N 2 O emission, mainly through regulating the growth of AOB but not AOA in this fluvo-aquic soil.

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“…There is little doubt that increasing atmospheric concentration of N 2 O is primarily caused by the excessive use of nitrogen (N) fertilizer (Davidson 2009;Shcherbak et al 2014;Zhu et al 2015). However, N 2 O production from N fertilizer depends mainly on soil properties but also by soil moisture and the type of N fertilizer (Zhu et al 2013b;Cheng et al 2014;Wang et al 2016a;Zhang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…N fertilizer application (ammonium and nitrate fertilizers) has been recognized as another important factor influencing N 2 O emissions from arable soils (Zhu et al 2013a;Rosa et al 2016;Zhang et al 2016;Krauss et al 2017) because it provides substrates for driving soil nitrification and denitrification processes. Application of ammonium fertilizer can produce N 2 O by nitrification, be converted to NO 3 − , while NO 3 − in soils can produce N 2 O by denitrification (Del Prado et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Responses of soil nitrous oxide production and abundances and composition of associated microbial communities to nitrogen and water amendment

et al. 2017

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Soil moisture and nitrogen (N) are two important factors influencing N 2 O emissions and the growth of microorganisms. Here, we carried out a microcosm experiment to evaluate effects of soil moisture level and N fertilizer type on N 2 O emissions and abundances and composition of associated microbial communities in the two typical arable soils. The abundances and community composition of functional microbes involved in nitrification and denitrification were determined via quantitative PCR (qPCR) and terminal restriction length fragment polymorphism (T-RFLP), respectively. Results showed that N 2 O production was higher at 90% water-filled pore (WFPS) than at 50% WFPS. The N 2 O emissions in the two soils amended with ammonium were higher than those amended with nitrate, especially at relatively high moisture level. In both soils, increased soil moisture stimulated the growth of ammonia-oxidizing bacteria (AOB) and nitrite reducer (nirK). Ammonium fertilizer treatment increased the population size of AOB and nirK genes in the alluvial soil, while reduced the abundances of ammonia-oxidizing archaea (AOA) and denitrifiers (nirK and nosZ) in the red soil. Nitrate addition had a negative effect on AOA abundance in the red soil. Total N 2 O emissions were positively correlated to AOB abundance, but not to other functional genes in the two soils. Changed soil moisture significantly affected AOA rather than AOB community composition in both soils. The way and extent of N fertilizers impacted on nitrifier and denitrifier community composition varied with N form and soil type. These results indicate that N 2 O emissions and the succession of nitrifying and denitrifying communities are selectively affected by soil moisture and N fertilizer form in the two contrasting types of soil.

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NO and N2O emissions from agricultural fields in the North China Plain: Origination and mitigation

Cited by 49 publications

References 47 publications

Gaseous losses of fertilizer nitrogen from a citrus orchard in the red soil hilly region of Southeast China

Gaseous losses of fertilizer nitrogen from a citrus orchard in the red soil hilly region of Southeast China

Effects of dicyandiamide and acetylene on N2O emissions and ammonia oxidizers in a fluvo-aquic soil applied with urea

Responses of soil nitrous oxide production and abundances and composition of associated microbial communities to nitrogen and water amendment

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