Enhanced nitrous oxide emissions caused by atmospheric nitrogen deposition in agroecosystems over China

Yang, Yuyu; Liu, Lei; Zhang, Feng; Zhang, Xiuying; Xu, Wen; Liu, Xuejun; Li, Yang; Wang, Hongzhen; Xie, Yaowen

doi:10.1007/s11356-020-11591-5

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…NO 3 – and NH 4 + of N deposition have longer exposure times for the soil nitrification and denitrification processes, which is closer to the real situation of N deposition involved in the N cycle. In general, the EF value of N deposition in the summer was higher than for other seasons because the EF value increases with increasing precipitation and nitrification and denitrification are very sensitive to the temperature. , However, for the emission factor of each soil N input, there was no significant annual variability during 1996–2013 ( p > 0.01).…”

Section: Resultsmentioning

confidence: 93%

“…In general, the EF value of N deposition in the summer was higher than for other seasons because the EF value increases with increasing precipitation 52 and nitrification and denitrification are very sensitive to the temperature. 53,54 However, for the emission factor of each soil N input, there was no significant annual variability during 1996−2013 (p > 0.01). croplands will increase at a rate of 0.7 mm yr −1 and 0.022 °C yr −1 under RCP4.5 and 1.6 mm yr −1 and 0.59 °C yr −1 under RCP8.5 during 2010−2100 (Figures S7 and S8).…”

Section: Methodsmentioning

confidence: 94%

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Soil Nitrous Oxide Emissions by Atmospheric Nitrogen Deposition over Global Agricultural Systems

Yang

Liu

Zhang

et al. 2021

Environ. Sci. Technol.

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Agricultural soil is the main source of nitrous oxide (N2O) emissions which contribute to global warming and stratospheric ozone depletion. In recent decades, atmospheric nitrogen (N) deposition has increased dramatically as an important agricultural soil N input, while its effect on soil N2O emissions in the current and future climate change remains unknown. Here, we conducted a thorough analysis of the effect of N deposition and climate change on soil N2O emissions as well as their trends. Soil N2O emissions induced by N deposition accounted for 25% of global cropland soil N2O emissions. Global soil N2O emissions over croplands increased by 2% yr–1 during 1996–2013, of which N deposition could explain 15% of the increase. The emission factor of N deposition was ∼7 times that of N fertilizer plus manure (∼1%) through a more direct way, since N deposition including nitrate (NO3 –) and ammonium (NH4 +) could be directly used for nitrification and denitrification. By 2100, N deposition will increase by 80% and cropland soil N2O emissions will increase by 241% under the RCP8.5 scenario in comparison with the 2010 baseline. These results suggest that, under the background of increasing global N deposition, it is essential to consider its effects on soil N2O emissions in climatic change studies.

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Section: Resultsmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 94%

Soil Nitrous Oxide Emissions by Atmospheric Nitrogen Deposition over Global Agricultural Systems

Yang

Liu

Zhang

et al. 2021

Environ. Sci. Technol.

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“…In order to pursue economic benefits, farmers have excessively applied chemical N fertilizers in the production process, resulting in crop yields and N utilization efficiency (NUE) no longer increasing continuously. Consequently, large N losses including nitrate (NO 3 − -N) leaching and ammonia and nitrous oxide emissions threaten the quality of the water and the atmospheric environment [ 2 , 3 , 4 , 5 ]. Therefore, coupling N with other soil additives to ensure food security while reducing the environmental loss of N fertilizer is a major ongoing concern in global agricultural production and in the ecological environment.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Biochar Addition and Nitrogen Fertilizers on Wheat Production and Nutrient Status in Soil Profiles

Liu,

Chen,

et al. 2024

Plants

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To investigate the responses of crop production and soil profile nutrient status to biochar (BC) application, we conducted a soil column experiment considering two BC addition rates (0.5 and 1.5 wt% of the weight of 0–20 cm topsoil) combined with two nitrogen (N) input levels (low N: 144 kg ha−1, LN; high N: 240 kg ha−1, HN). The results showed that BC application increased the soil pH. The soil pH of the 0–10 cm profile under LN and the 20–40 cm profile under HN were both significantly increased by 0.1–0.2 units after BC addition. Under LN, BC addition significantly increased NH4+-N (17.8–46.9%), total N (15.4–38.4%), and soil organic carbon (19.9–24.0%) in the 0–10 cm profile, but decreased NH4+-N in the 20–30 cm soil profile and NO3−-N in the 10–30 cm profile by 13.8–28.5% and 13.0–34.9%, respectively. BC had an increasing effect on the available phosphorus, the contents of which in the 10–20 and 30–40 cm soil profiles under LN and 20–30 cm profile under HN were significantly elevated by 14.1%, 24.0%, and 23.27%, respectively. However, BC exerted no effect on the available potassium in the soil profile. BC had a strong improving effect (15.3%) on the wheat yield, especially the N144 + BC0.5% treatment, which could be compared to the HN treatment, but there was no yield-increasing effect when high N fertilizer was supplied. In summary, BC improved the fertility of agriculture soil (0–20 cm) with wheat. In particular, low N inputs together with an appropriate rate of BC (0.5 wt%) could not only achieve the low inputs but also the high outputs in wheat production. In future study, we will compare the effects of multiple doses of N and BC on soil fertility and crop production.

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Rhus typhina decreased soil nitrogen contents and peroxidase activity following the addition of nitrogen

Zhong

et al. 2022

Int. J. Environ. Sci. Technol.

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Enhanced nitrous oxide emissions caused by atmospheric nitrogen deposition in agroecosystems over China

Cited by 8 publications

References 38 publications

Soil Nitrous Oxide Emissions by Atmospheric Nitrogen Deposition over Global Agricultural Systems

Soil Nitrous Oxide Emissions by Atmospheric Nitrogen Deposition over Global Agricultural Systems

Interaction of Biochar Addition and Nitrogen Fertilizers on Wheat Production and Nutrient Status in Soil Profiles

Rhus typhina decreased soil nitrogen contents and peroxidase activity following the addition of nitrogen

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