Spatiotemporal characteristics and health effects of air pollutants in Shenzhen

Wu, Yongsheng; Zhang, Fengying; Shi, Yu; Pilot, Eva; Lin, Lanyu; Fu, Yingbin; Krafft, Thomas; Wang, Wuyi

doi:10.1016/j.apr.2015.07.005

Cited by 10 publications

(8 citation statements)

References 25 publications

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“…In comparison to other Chinese cities, the average annual AQI (101.1) in Changchun City was lower than that in the northern cities such as Beijing Municipality (118.9) and Shijiazhuang City (229.0) (Chen W et al, 2015). However, Changchun's value were significantly higher than that in the southern cities like Shenzhen (64.4) (Wu et al, 2016). The local AQI attainment rate (AQI < 100), showing a value of 76.3%, was relatively high among the 190 cities studied in China (Chen W et al, 2015;Chen W et al, 2016;Li et al, 2016).…”

Section: Overview Of Air Quality In Changchun Citymentioning

confidence: 94%

Characteristics and cause analysis of heavy haze in Changchun City in Northeast China

Chen

Zhang

et al. 2017

Chin. Geogr. Sci.

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Northeast China has been reported as having serious air pollution in China with increasing occurrences of severe haze episodes. Changchun City, as the center of Northeast China, has longstanding industry and is an important agricultural base. Additionally, Changchun City has a long winter requiring heating of buildings emitting pollution into the air. These factors contribute to the complexity of haze pollution in this area. In order to analyze the causes of heavy haze, surface air quality has been monitored from 2013 to 2015. By using satellite and meteorological data, atmospheric pollution status, spatio-temporal variations and formation have been analyzed. Results indicated that the air quality in 88.9% of days exceeding air quality index (AQI) level-1 standard (AQI >50) according to the National Ambient Air Quality Standard (NAAQS) of China. Conversely, 33.7% of the days showed a higher level with AQI > 100. Extreme haze events (AQI > 300) occurred frequently during agricultural harvesting period (from October 10 to November 10), intensive winter heating period (from Late-December to February) and period of spring windblown dust (April and May). Most daily concentrations of gaseous pollutants, i.e., NO 2 (43.8 μg/m 3), CO (0.9 mg/m 3), SO 2 (37.9 μg/m 3), and O 3 (74.9 μg/m 3) were evaluated within level-1 concentration limits of NAAQS standards. However, particulate matter (PM 2.5 and PM 10) concentrations (67.3 μg/m 3 and 115.2 μg/m 3 , respectively) were significantly higher than their level-1 limits. Severe haze in spring was caused by offsite transported dust and windblown surface soil. Heavy haze periods during fall and winter were mainly formed by intensive emissions of atmospheric pollutants and steady weather conditions (i.e., low wind speed and inversion layer). The overlay emissions of widespread straw burning and coal combustion for heating were the dominant factors contributing to haze in autumn, while intensive coal burning during the coldest time was the primary component of total emissions. In addition, general emissions including automobile exhaust, road and construction dust, residential and industrial activities, have significantly increased in recent years, making heavy haze a more frequent occurrence. Therefore, both improved technological strategies and optimized pollution management on a regional scale are necessary to minimize emissions in specified seasons in Changchun City, as well as comprehensive control measures in Northeast China.

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Section: Overview Of Air Quality In Changchun Citymentioning

confidence: 94%

Characteristics and cause analysis of heavy haze in Changchun City in Northeast China

Chen

Zhang

et al. 2017

Chin. Geogr. Sci.

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“…AQI was higher south of Beijing because of the heavy industries nearby, and lower in the north because of large areas of forest vegetation [22]. The annual AQI was higher in the western parts and central area than in the tourist area in Shenzhen [69]. Land use and industrial structures affected AQ and pollutant distributions in urban Shenzhen.…”

Section: Spatial Heterogeneity Of Aq and Dominant Air Pollutantsmentioning

confidence: 96%

“…Land use and industrial structures affected AQ and pollutant distributions in urban Shenzhen. Higher NO 2 was attributed to greater traffic or indoor combustion emissions in the west, higher SO 2 was caused by industrial coal combustion in the east, and lower CO resulted from tourism protection in tourist areas [69].…”

Section: Spatial Heterogeneity Of Aq and Dominant Air Pollutantsmentioning

confidence: 99%

Statistical Analysis of Spatiotemporal Heterogeneity of the Distribution of Air Quality and Dominant Air Pollutants and the Effect Factors in Qingdao Urban Zones

Zhao

Gao

Sun³

et al. 2018

Atmosphere

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Air pollution has impacted people's lives in urban China, and the analysis of the distribution and driving factors behind air quality has become a current research focus. In this study, the temporal heterogeneity of air quality (AQ) and the dominant air pollutants across the four seasons were analyzed based on the Kruskal-Wallis rank-sum test method. Then, the spatial heterogeneity of AQ and the dominant air pollutants across four sites were analyzed based on the Wilcoxon signed-rank test method. Finally, the copula model was introduced to analyze the effect of relative factors on dominant air pollutants. The results show that AQ and dominant air pollutants present significant spatiotemporal heterogeneity in the study area. AQ is worst in winter and best in summer. PM 10 , O 3 , and PM 2.5 are the dominant air pollutants in spring, summer, and winter, respectively. The average concentration of dominant air pollutants presents significant and diverse daily peaks and troughs across the four sites. The main driving factors are pollutants such as SO 2 , NO 2 , and CO, so pollutant emission reduction is the key to improving air quality. Corresponding pollution control measures should account for this heterogeneity in terms of AQ and the dominant air pollutants among different urban zones.

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“…According to epidemiological studies conducted in Shenzhen, cardiovascular and respiratory system diseases are associated with air pollution exposure [14,15]. Air pollution has also been linked to infectious diseases [16], mortality [17], and low birth weight [18].…”

Section: Introductionmentioning

confidence: 99%

Associations Between Air Pollution Exposure and Daily Pediatric Outpatient Visits for Dry Eye Disease: A Time-Series Study in Shenzhen, China

Zeng

Fan

et al. 2021

Int J Public Health

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Objectives: This study aimed to investigate the associations between air pollution exposure and pediatric outpatient visits for dry eye disease (DED) in Shenzhen, China.Methods: Generalized additive models were utilized to explore the acute effects of air pollution exposure on pediatric outpatient visits for DED.Results: Single-day lag exposures to NO2, O3, PM2.5, and PM10 were associated with DED outpatient visits at lag days 0, 6, 4 and 2. Relative risks (RRs) for DED given a 10-μg/m3 increase in NO2, O3, PM2.5, and PM10 concentrations were 1.062[95% confidence interval (CI) 1.003, 1.123], 1.015(95% CI 1.001, 1.031), 1.052(95% CI 1.001, 1.115), and 1.038 (95% CI 1.002, 1.076), respectively. RR for DED given a 10-μg/m3 increase in NO2 over cumulative lag days 0–1 was 1.075 (95% CI 1.009, 1.147), and RR for DED given a 10-μg/m3 increase in PM10 over cumulative lag days 0–4 was 1.051 (95% CI 1.003, 1.102).Conclusion: The observed associations between air pollution and outpatient visits for DED may provide evidence for policy makers to consider implementing measures to reduce the risk of DED owing to air pollution in China.

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Spatiotemporal characteristics and health effects of air pollutants in Shenzhen

Cited by 10 publications

References 25 publications

Characteristics and cause analysis of heavy haze in Changchun City in Northeast China

Characteristics and cause analysis of heavy haze in Changchun City in Northeast China

Statistical Analysis of Spatiotemporal Heterogeneity of the Distribution of Air Quality and Dominant Air Pollutants and the Effect Factors in Qingdao Urban Zones

Associations Between Air Pollution Exposure and Daily Pediatric Outpatient Visits for Dry Eye Disease: A Time-Series Study in Shenzhen, China

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