Ozone concentrations, flux and potential effect on yield during wheat growth in the Northwest-Shandong Plain of China

Zhu, Zhenfeng; Sun, Xiaomin; Zhao, Fenghua; Meixner, Franz X.

doi:10.1016/j.jes.2014.12.022

Cited by 36 publications

(7 citation statements)

References 52 publications

(93 reference statements)

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“…We further find a similar midday magnitude as Stella et al (2011a) found in April with wetter soils. Night-time ozone deposition velocity did not go lower than around 0.2 cm s −1 in our study, as also found by Zhu et al (2015) over a growing wheat in China, Stella et al (2011a) over bare soil in summer, and Lamaud et al (2009) over maize. These authors as well as Huang et al (2016) clearly show that this is due to non-stomatal deposition being primarily driven by u * which does not reach zero at night during these periods.…”

Section: Seasonal Dynamics Of No No 2 and O 3 Fluxessupporting

confidence: 88%

Nitrogen oxides and ozone fluxes from an oilseed-rape management cycle: the influence of cattle slurry application

Vuolo¹,

Loubet²,

Mascher³

et al. 2017

Biogeosciences

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Abstract. This study reports NO, NO2 and O3 mixing ratios and flux measurements using the eddy covariance method during a 7-month period over an oilseed-rape field, spanning an organic and a mineral fertilisation event. Cumulated NO emissions during the whole period were in agreement with previous studies and showed quite low emissions of 0.26 kg N ha−1 with an emission factor of 0.27 %, estimated as the ratio between total N emitted in the form of NO and total N input. The NO emissions were higher following organic fertilisation in August due to conditions favouring nitrification (soil water content around 20 % and high temperatures), while mineral fertilisation in February did not result in high emissions. The ozone deposition velocity increased significantly after organic fertilisation. The analysis of the chemical and turbulent transport times showed that reactions between NO, NO2 and O3 below the measurement height occurred constantly throughout the 7-month period. Following organic fertilisation, the NO ground fluxes were 30 % larger than the NO fluxes at the measurement height (3.2 m), while the NO2 fluxes switched from deposition to emission during certain periods, being negative at the surface and positive at the measurement height. This phenomenon of apparent NO2 emissions appears to be significant during strong NO emissions and high O3 ambient mixing ratios, even on a bare soil during August.

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Section: Seasonal Dynamics Of No No 2 and O 3 Fluxessupporting

confidence: 88%

Nitrogen oxides and ozone fluxes from an oilseed-rape management cycle: the influence of cattle slurry application

Vuolo¹,

Loubet²,

Mascher³

et al. 2017

Biogeosciences

View full text Add to dashboard Cite

show abstract

“…We further find a similar midday magnitude as Stella et al (2011) found in April with wetter soils. Night-time ozone deposition velocity does not go lower than around 0.2 cm s -1 in our study, as also found by Zhu et al (2015) over a growing wheat in China, Stella et al (2011) over bare soil in summer, and Lamaud et al (2009) over maize. These authors as well as Huang et al (2016) clearly show that this is due to non-stomatal deposition being primarily driven by u * which does not reach zero at night during these periods.…”

Section: S6 Seasonal Pattern Of O 3 Deposition Velocity and No Fluxessupporting

confidence: 87%

Nitrogen oxides and ozone fluxes following organic and mineral fertilisation of a growing oilseed-rape

Vuolo

Loubet

Mascher

et al. 2016

Preprint

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Abstract. This study reports NO, NO2 and O3 mixing ratios and flux measurements using the eddy-covariance method during a 7-months period over an oilseed rape field, spanning an organic and a mineral fertilisation event. Mean NO emissions during the whole period were in agreement with previous studies and showed quite small emissions of 0.26&#8201;kg&#8201;N&#8201;ha&#8722;1 with an emission factor of 0.27&#8201;%, estimated as the ratio between total N emitted in form of NO and total N input. The NO emissions were higher following organic fertilisation in August due to conditions favouring nitrification (soil water content around 20&#8201;% and high temperatures), while mineral fertilisation in February did not result in large emissions. The ozone (O3) deposition velocity was significantly larger following organic fertilisation. We argue that reaction of O3 with emitted NO or reaction of O3 at the surface did not explain this finding, but we propose that reactions of O3 with VOCs emitted by the slurry were the main reason. The analysis of the chemical and turbulent transport times showed that reactions between NO, NO2 and O3 below the measurement height occurred at all time during the 7-months period. Following organic fertilisation, the NO ground fluxes were 30&#8201;% larger than the NO fluxes at the measurement height (3.2&#8201;m) , while the NO2 fluxes changed sign during some periods, being negative at the surface and positive at the measurement height. This phenomenon of "apparent NO2 emissions" reveals to be important during strong NO emissions and high O3 ambient mixing ratios, even on a bare soil during August.

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“…Specifically, the M7 indicator shows an average exposure of 7 h (from 9:00 a.m. to 3:59 p.m.) and the AOT40 index indicates the concentration of O 3 accumulated during daytime hours over a threshold of 40 ppbV [ 41 ]. AOT40 is an accumulated O 3 -exposure metric currently used as a standard in many regions worldwide to estimate the effects of ground-level O 3 pollution on crops, such as in China [ 18 , 69 , 70 ], India [ 15 , 71 ], Europe [ 72 , 73 ], and the United States [ 74 , 75 ]. Furthermore, the AOT40 index is strongly correlated with the relative yields of different crops [ [76] , [77] , [78] ].…”

Section: Methodsmentioning

confidence: 99%

Assessment of rice yield and economic losses caused by ground-level O3 exposure in the Mekong delta region, Vietnam

Bui

Nguyen

2023

Heliyon

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Ozone concentrations, flux and potential effect on yield during wheat growth in the Northwest-Shandong Plain of China

Cited by 36 publications

References 52 publications

Nitrogen oxides and ozone fluxes from an oilseed-rape management cycle: the influence of cattle slurry application

Nitrogen oxides and ozone fluxes from an oilseed-rape management cycle: the influence of cattle slurry application

Nitrogen oxides and ozone fluxes following organic and mineral fertilisation of a growing oilseed-rape

Assessment of rice yield and economic losses caused by ground-level O3 exposure in the Mekong delta region, Vietnam

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