Global meta-analysis of terrestrial nitrous oxide emissions and associated functional genes under nitrogen addition

You, Luncheng; Ros, Gerard H.; Chen, Yongliang; Yang, Xue; Cui, Zhenling; Liu, Xuejun; Jiang, Rongfeng; Zhang, Fusuo; Vries, Wim de

doi:10.1016/j.soilbio.2021.108523

Cited by 40 publications

(21 citation statements)

References 69 publications

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“…Soil temperature is another key factor controlling NI efficiency, which can subside after 1 week at 35°C ( Barth et al, 2008 ; Chen et al, 2015 ). Furthermore, many studies focused on the impact and contribution of soil microorganisms on N 2 O emissions ( Chen et al, 2019 ; Lazcano et al, 2021 ; Yang et al, 2021 ; You et al, 2022 ). However, there is still a lack of direct evidence on whether soil microbial community, especially AOA and AOB, affects NI efficacy ( Chen et al, 2010 ; Guardia et al, 2018 ; Lam et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

A meta-analysis to examine whether nitrification inhibitors work through selectively inhibiting ammonia-oxidizing bacteria

Lei

Fan²,

Yu³

et al. 2022

Front. Microbiol.

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Nitrification inhibitor (NI) is often claimed to be efficient in mitigating nitrogen (N) losses from agricultural production systems by slowing down nitrification. Increasing evidence suggests that ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) have the genetic potential to produce nitrous oxide (N2O) and perform the first step of nitrification, but their contribution to N2O and nitrification remains unclear. Furthermore, both AOA and AOB are probably targets for NIs, but a quantitative synthesis is lacking to identify the “indicator microbe” as the best predictor of NI efficiency under different environmental conditions. In this present study, a meta-analysis to assess the response characteristics of AOB and AOA to NI application was conducted and the relationship between NI efficiency and the AOA and AOB amoA genes response under different conditions was evaluated. The dataset consisted of 48 papers (214 observations). This study showed that NIs on average reduced 58.1% of N2O emissions and increased 71.4% of soil NH4+ concentrations, respectively. When 3, 4-dimethylpyrazole phosphate (DMPP) was applied with both organic and inorganic fertilizers in alkaline medium soils, it had higher efficacy of decreasing N2O emissions than in acidic soils. The abundance of AOB amoA genes was dramatically reduced by about 50% with NI application in most soil types. Decrease in N2O emissions with NI addition was significantly correlated with AOB changes (R2 = 0.135, n = 110, P < 0.01) rather than changes in AOA, and there was an obvious correlation between the changes in NH4+ concentration and AOB amoA gene abundance after NI application (R2 = 0.037, n = 136, P = 0.014). The results indicated the principal role of AOB in nitrification, furthermore, AOB would be the best predictor of NI efficiency.

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Section: Introductionmentioning

confidence: 99%

A meta-analysis to examine whether nitrification inhibitors work through selectively inhibiting ammonia-oxidizing bacteria

Lei

Fan²,

Yu³

et al. 2022

Front. Microbiol.

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“…A significantly lower ratio of ammonia-oxidizing archaea (AOA)/AOB amoA genes [mean value, 1.13; standard error of the mean (SE), 0.04; standard deviation (SD), 0.15; p < 0.05; one-way ANOVA] was observed in PSDAs compared with NPSDAs (mean value, 1.28; SE, 0.04; SD, 0.19; p < 0.05; one-way ANOVA) (Figure a). As AOB are considered the major contributors to ammonia oxidation, nitrification might be stimulated in PSDAs. ,, Studies have reported that increase in the available nitrogen concentration, ammonia in particular, is beneficial for the growth of AOB over AOA, as AOB occupy a broader ecological niche than AOA . The higher sediment ammonia concentration (Figure S2) explains why the AOA/AOB ratio is lower in PSDAs than in other places.…”

Section: Resultsmentioning

confidence: 99%

“…8,9,36 Studies have reported that increase in the available nitrogen concentration, ammonia in particular, is beneficial for the growth of AOB over AOA, as AOB occupy a broader ecological niche than AOA. 37 The higher sediment ammonia concentration (Figure S2) explains why the AOA/ AOB ratio is lower in PSDAs than in other places. Additionally, manure is a major nitrogen source in NPSDAs and has been proven to provide energy to ammonia oxidizers and significantly increase the number of AOA.…”

Section: Key Environmental Variables Relating To Microbial Community ...mentioning

confidence: 95%

Land–Water Transport and Sources of Nitrogen Pollution Affecting the Structure and Function of Riverine Microbial Communities

Zhu

Bu³

et al. 2023

Environ. Sci. Technol.

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The characterization of variations in riverine microbiota that stem from contaminant sources and transport modes is important for understanding biogeochemical processes. However, the association between complex anthropogenic nitrogen pollution and bacteria has not been extensively investigated owing to the difficulties faced while determining the distribution of nitrogen contaminants in watersheds. Here, we employed the Soil and Water Assessment Tool alongside microbiological analysis to explore microbial characteristics and their responses to complex nitrogen pollution patterns. Significant variations in microbial communities were observed in sub-basins with distinct land–water pollution transport modes. Point source-dominated areas (PSDAs) exhibited reduced microbial diversity, high number of denitrification groups, and increased nitrogen cycling compared with others. The negative relative deviations (−3.38) between the measured and simulated nitrate concentrations in PSDAs indicated that nitrate removal was more effective in PSDAs. Pollution sources were also closely associated with microbiota. Effluents from concentrated animal feeding operations were the primary factors relating to the microbiota compositions in PSDAs and balanced areas. In nonpoint source-dominated areas, contaminants from septic tanks become the most relevant sources to microbial community structures. Overall, this study expands our knowledge regarding microbial biogeochemistry in catchments and beyond by linking specific nitrogen pollution scenarios to microorganisms.

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“…Nitrogen (N) fertilizer produced via the Haber–Bosch process reached 96 Tg worldwide in 2010, accounting for the largest portion of anthropogenic reactive N. N fertilizers are highly important to feed the rapidly growing world population, but their heavy application introduces some environmental hazards, such as nitrate leaching [ 1 , 2 , 3 ]. Nitrate leaching is one of the main pathways through which N fertilizer is lost in the farmland.…”

Section: Introductionmentioning

confidence: 99%

Optimal Fertilizer Application Reduced Nitrogen Leaching and Maintained High Yield in Wheat-Maize Cropping System in North China

Luo

Kou

Wang

2022

Plants

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Agricultural nitrogen (N) non-point source pollution in the North China Plain is a major factor that affects water quality and human health. The characteristics of N leaching under different N application conditions should be further quantified accurately in winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) rotation farmland in North China, and a basis for reducing the risk and evaluation of N leaching in this area. A three-year field experiment was conducted using an in situ leakage pond method at a typical farmland in Henan in 2017–2020. Crop yield, soil nitrate N residues, and N utilization were also studied during the study period. Five N fertilizer rates were established with 0 (CK), 285 (LN), 465 (MN), 510 (MNO), and 645 (HN) kg N ha−1 for one rotation cycle. MNO was applied with chemical and organic fertilizers. The concentration of nitrate N in the soil leaching solution of CK, LN, MN, MNO, and HN was 0.81-, 1.49-, 3.65-, 5.55-, and 7.57-fold that of the World Health Organization’s standard for underground drinking water. The exponential relationship between the N application rate and leaching was obtained when the annual N input exceeded 300 kg ha−1, and the N leaching rate increased greatly. The leaching rate of nitrate N in the total N was 50.6–82.4% under different treatments of N application. The combination of chemical and organic fertilizers treatment (MNO) reduced the amount of N that was leached in dry years. The nitrate leaching amount of summer maize accounts for 83.0%, 49.4%, and 72.0% of the total nitrate leaching amount of the whole rotation cycles in 2017–2020. LN and MN were recommended as the optimized N application here (285–465 kg N ha−1) with the two-season rotation grain yield of 17.2 ton ha−1 (16.5–17.9 ton ha−1) and nitrate N leaching of 21.6 kg ha−1 (12.6–30.5 kg ha−1).

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Global meta-analysis of terrestrial nitrous oxide emissions and associated functional genes under nitrogen addition

Cited by 40 publications

References 69 publications

A meta-analysis to examine whether nitrification inhibitors work through selectively inhibiting ammonia-oxidizing bacteria

A meta-analysis to examine whether nitrification inhibitors work through selectively inhibiting ammonia-oxidizing bacteria

Land–Water Transport and Sources of Nitrogen Pollution Affecting the Structure and Function of Riverine Microbial Communities

Optimal Fertilizer Application Reduced Nitrogen Leaching and Maintained High Yield in Wheat-Maize Cropping System in North China

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