Progress in ecological and environmental effects of ground-level O<sub>3</sub> in China

Zhaozhong, 冯兆忠 Feng; Pin, 李品 Li; Xiangyang, 袁相洋 Yuan; Feng, 高峰 Gao; Lijun, 姜立军 Jiang; Dai, Lulu

doi:10.5846/stxb201704100618

Cited by 9 publications

(7 citation statements)

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“…Factors affecting NPP include temperature, precipitation, solar radiation, human activities and regional vegetation types (Tu et al, 2023;Xu et al, 2023). Surface O 3 is mostly a secondary pollutant generated from nitrogen oxides (NOx) and volatile organic compounds (VOCs) as precursors (Feng et al, 2018). When excessive O 3 enters plant cells, it causes damage or death of plant cells, and affects plant photosynthesis and respiration, thus affecting the NPP of terrestrial ecosystems (Feng et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Surface O 3 is mostly a secondary pollutant generated from nitrogen oxides (NOx) and volatile organic compounds (VOCs) as precursors (Feng et al, 2018). When excessive O 3 enters plant cells, it causes damage or death of plant cells, and affects plant photosynthesis and respiration, thus affecting the NPP of terrestrial ecosystems (Feng et al, 2018). With the rapid economic development of China in recent years, the emission of NOx and VOCs from industries has increased, and O 3 pollution has become increasingly aggravated.…”

Section: Introductionmentioning

confidence: 99%

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A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

Wang

Huang

et al. 2023

Front. Environ. Sci.

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O3 pollution in China has been increasing in recent years, but the process of O3 impact on net primary productivity of terrestrial ecosystems remains unclear. We attempts to explore a remote sensing-based method to assess the impact of O3 on NPP of China’s terrestrial ecosystems by combining MODIS NPP and the latest ground observation data of O3 concentration. By comparing the NPP data of MODIS image pixels with the 6-year average AOT40 data of corresponding pixels, we extracted the signal data that highlighted the effects of O3 on NPP and established the response relationships between AOT40 and NPP. It was found that NPP was significantly negatively correlated with AOT40 in farmland and grassland ecosystems in China (farmland: r = 0.8674, p < 0.003, grassland: r = 0.7181, p < 0.03). Then the response relationships were adopted to evaluate the effect in China in 2014. The results showed that the estimated percentage of O3-induced NPP decline was in the range of 5%–35%. Among them, the most significant declines were found in farmland ecosystems, with the vast majority of declines in 10%–35%. The decrease rate of evergreen coniferous forests ranked second, mostly in the range of 15%–20%. The grassland ecosystems declined at a lower rate, almost between 5% and 15%. And the evergreen broad-leaved forests has the lowest decline rate, most distributed in 0%–5%. The highest percentage decreases were mainly found in the Beijing-Tianjin-Hebei region and Shandong Province. And the decline rate of farmland ecosystems was significantly higher than other ecosystem types.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

Wang

Huang

et al. 2023

Front. Environ. Sci.

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“…Additionally, tree root biomass, fine root production, and turnover rate decreased [8]. Therefore, high O 3 concentrations lead to a decrease in agricultural and forestry yields, resulting in a decrease in economic production [9]. Previous studies have shown that surface O 3 concentrations in many cities in the central and southern regions have been increasing year by year [10,11], and it is important to strengthen regional O 3 pollution control.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Ozone Pollution Characteristics, Meteorological Effects, and Transport Sources in Zhuzhou, China

Yan,

Luo,

Zhang

et al. 2024

Atmosphere

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Based on the hourly surface ozone (O3) observations and meteorological data from Zhuzhou in 2021, the pollution characteristics and influencing factors of O3 in Zhuzhou were investigated in the study. In addition, the Potential Source Contribution Function (PSCF) and Concentration Weighted Trajectory (CWT) analysis methods were employed to analyze the transmission paths and potential pollution sources of O3 pollution in Zhuzhou. The results showed that the total number of days with O3 exceeding the standard at all monitoring stations in Zhuzhou was 142 days in 2021. The overall air quality was less affected by SO2, NO2, and CO, and the trend of O3 pollution was still increasing. The concentrations of O3, CO, and NO2 varied significantly in different months, and the variation of O3 exhibited a “double-peak” pattern, with the peak value occurring in September. The O3 concentration in urban areas was significantly higher than that in suburban areas. Meteorological conditions had a significant impact on the degree of O3 pollution in Zhuzhou. The average wind speed in Zhuzhou throughout the year was 1.7 m/s, and the prevailing wind direction in summer was southeast, with a frequency of 16%. O3 pollution was mainly transported by short-distance airflow during the over-standard periods in 2021, accounting for 37.64%. The main source of O3 pollutant was from Jiangxi Province in the east, with the shortest distance of regional transport and the highest O3 concentration. In addition, transportation from central Guangdong Province, western Jiangxi Province, and central Hubei Province also had a significant impact.

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“…With the recent acceleration of China's urbanization process, the rapid development of the chemical industry and the rapid increase in car ownership, the content of ozone (O 3 ) precursor substances such as nitrogen oxides and volatile organic compounds on the earth's surface has increased rapidly (Feng et al., 2015; Tang et al., 2013). Under strong light conditions, these primary pollutants undergo photochemical reactions that produce O 3 , a secondary pollutant with a high oxidation potential (Matyssek et al., 2007; The Royal Society, 2008), resulting in varying degrees of O 3 pollution of the near ground throughout China (Feng et al., 2018). From 2013 to 2017, China's O 3 concentration increased at a rate of 3 ppb per year, as measured by environmental monitoring data (N. Wang, Lyu, et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Impacts of ozone stress on stem lodging characteristics of different indica and japonica rice cultivars

Shao

Zhang

et al. 2023

Crop Science

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Ozone (O 3 ) stress inhibits rice growth and development, resulting in yield loss and poor quality. However, the effect of ozone stress on the lodging resistance of rice stems has scarcely been reported. In this study, three indica rice cultivars and three modern japonica rice cultivars were treated with high O 3 concentration (100 ppb) while a gas fumigation platform was used in the indoor control (about 10 ppb). The influence of O 3 stress on lodging resistance was investigated in 2016 and 2017. Ozone stress reduced the in situ pushing resistance of intact plants by 40% and single stems by 32.0%. The breaking resistance of the third, fourth, and fifth internodes from the top of the rice stem was, respectively, reduced by 24.0%, 25.1%, and 33.6%, on average. The O 3 -induced reduction in the basal internode morphological characteristics was associated with the reduced cross-sectional area, maximum and minimum stem diameter, dry weight per unit length, length, dry weight, and culm wall thickness. Among these characteristics, the largest reduction was exhibited by internode dry weight (−43.1%), while the lowest reduction was observed for culm wall thickness (−9.7%). The O 3 induced a significantly higher reduction in basal internode characteristics of indica compared with the japonica rice, with a larger effect in the lower internode than the upper internode, indicating a significant interaction between O 3 and rice cultivar and internode position. Statistical analysis revealed a significant positive linear correlation between the response of in situ pushing resistance of rice under O 3 stress and the response of basal internode breaking resistance, cross-sectional area, and dry weight per unit length. Ozone stress significantly reduced the lodging resistance in the rice stem, which is primarily associated with the thinning and poor filling of the basal internodes, and the O 3 impacts varied with cultivars and internode positions, but were similar between the two years. These results provide a scientific reference for the study of lodging resistance regulation of rice under high O 3 concentrations.

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Progress in ecological and environmental effects of ground-level O₃ in China

Cited by 9 publications

References 0 publications

A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

Analysis of Ozone Pollution Characteristics, Meteorological Effects, and Transport Sources in Zhuzhou, China

Impacts of ozone stress on stem lodging characteristics of different indica and japonica rice cultivars

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Progress in ecological and environmental effects of ground-level O3 in China

Cited by 9 publications

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A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

A remote sensing based method for assessing the impact of O3 on the net primary productivity of terrestrial ecosystems in China

Analysis of Ozone Pollution Characteristics, Meteorological Effects, and Transport Sources in Zhuzhou, China

Impacts of ozone stress on stem lodging characteristics of different indica and japonica rice cultivars

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Progress in ecological and environmental effects of ground-level O₃ in China