Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

Fantozzi, Federica; Monaci, Fabrizio; Blanuša, Tijana; Bargagli, Roberto

doi:10.1016/j.uclim.2015.02.001

Cited by 69 publications

(55 citation statements)

References 34 publications

(45 reference statements)

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“…Of the seasons, the highest O 3 concentrations in the sites with three kinds of urban forest in Yuanshan Forest Park were observed in summer (Figure 3), in agreement with the results of most previous studies conducted in urban, rural, and forest areas [54][55][56][57][58], and in compliance with the seasonal variation of O 3 levels in Joshua Tree National Park, (Californiam, USA) [59], as well as with the seasonal variation under tree canopies in the urban area of Siena, Italy [37]. This finding can be attributed primarily to the high BVOC levels observed in this period, especially during daytime, when tree activity and the intensity of photochemical reactions are at a maximum [60,61].…”

Section: Seasonal Variation Of O 3 Levelssupporting

confidence: 90%

“…For example, Yli-Pelkonen et al [35] and Harris and Manning [36] showed that O 3 levels in tree-covered areas were significantly lower than those in adjacent open areas. Fantozzi et al [37] reported that O 3 concentrations under Quercus ilex canopies were lower than those in open-field areas, but only in autumn. The results of this study are generally consistent with the findings of those studies.…”

Section: Effect Of Urban Forests On O 3 Levelsmentioning

confidence: 98%

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Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

Duan

Wang

Pei

et al. 2019

Forests

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This study is among the first to investigate ozone levels in urban forests in China. It establishes that urban forest air quality in Yuanshan Forest Park (Shenzhen) is suitable for recreational activities and identifies spatial, seasonal, and diurnal O3 patterns and relationships with micrometeorological parameters, suggesting the possibility of manipulating relevant forest characteristics to reduce Surface ozone (O3) levels. An understanding of O3 levels of urban forest environments is needed to assess potential effects on human health and recreational activities. Such studies in China are scarce. This study investigated urban forest O3 levels to improve understanding and support residents engaging in forest recreational activities. We monitored O3 levels in 2015–2016 for three urban forests representing common habitats (foothill, valley, and ridge) in Yuanshan Forest Park and for an adjacent square. The overall mean daily and daily maximum 8 h mean (MDA8) O3 concentrations were highest for the ridge forest and lowest for the valley forest. Each forest’s O3 concentrations were highest in summer. Diurnally, forest O3 concentrations peaked between 13:00 and 17:00 and reached a minimum between 03:00 and 09:00. The correlation between forest O3 concentrations and air temperature (AT) was strongly positive in summer and autumn but negative in spring. In each season, O3 concentration was negatively correlated with relative humidity (RH). No MDA8 or hourly O3 concentrations in the forests exceeded National Ambient Air Quality Standard Grade I thresholds (100 and 160 μg m−3, respectively). O3 accumulation is present in ridge urban forest in all seasons. Foothill and valley urban forests have better air quality than ridge forestation. Urban forest air quality is better in spring and autumn than in summer and is better from night-time to early morning than from noon to afternoon.

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Section: Seasonal Variation Of O 3 Levelssupporting

confidence: 90%

Section: Effect Of Urban Forests On O 3 Levelsmentioning

confidence: 98%

Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

Duan

Wang

Pei

et al. 2019

Forests

View full text Add to dashboard Cite

show abstract

“…Of the seasons, the highest O3 concentrations in the sites with three kinds of urban forest in Yuanshan Forest Park were observed in summer (Figure 3), in agreement with the results of most previous studies conducted in urban, rural, and forest areas [54][55][56][57][58], and in compliance with the seasonal variation of O3 levels in Joshua Tree National Park, USA [59], as well as with the seasonal variation under tree canopies in the urban area of Siena, Italy [60]. This finding can be attributed primarily to the high BVOC levels observed in this period, especially during daytime, when tree activity and the intensity of photochemical reactions are at a maximum [61][62].…”

Section: Seasonal Variation Of O3 Levelssupporting

confidence: 90%

“…For example, Yli-Pelkonen et al [35] and Harris and Manning [36] showed that O3 levels in tree-covered areas were significantly lower than those in adjacent open areas. Fantozzi et al [37] reported that O3 concentrations under Quercus ilex canopies were lower than those in open-field areas, but only in autumn. The results of this study are generally consistent with the findings of those studies.…”

Section: Effect Of Urban Forests On O3 Levelsmentioning

confidence: 98%

Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

Duan¹,

Wang²,

Pei³

et al. 2019

Preprint

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Research Highlights: This study is among the first to investigate ozone levels in urban forests in China. It establishes that urban forest air quality in Yuanshan Forest Park, Shenzhen, is suitable for recreational activities and identifies spatial, seasonal, and diurnal O3 patterns and relationships with micrometeorological parameters, suggesting the possibility of manipulating relevant forest characteristics to reduce O3 levels. Background and Objectives: An understanding of O3 levels of urban forest environments is needed to assess potential effects on human health and recreational activities. Such studies in China are scarce. This study investigated urban forest O3 levels to improve understanding and support residents engaging in forest recreational activities. Materials and Methods: We monitored O3 levels in 2015–2016 for three urban forests representing common habitats (foothill, valley, and ridge) in Yuanshan Forest Park, Shenzhen, and for an adjacent square. Results: The overall mean daily and daily maximum 8-h mean (MDA8) O3 concentrations were highest for the ridge forest and lowest for the valley forest. Each forest’s O3 concentrations were highest in summer. Diurnally, forest O3 concentrations peaked between 13:00 and 17:00 and reached a minimum between 03:00 and 09:00. The correlation between forest O3 concentrations and air temperature (AT) was strongly positive in summer and autumn but negative in spring. In each season, O3 concentration was negatively correlated with relative humidity (RH). No MDA8 or hourly O3 concentrations in the forests exceeded National Ambient Air Quality Standard Grade I thresholds (100 and 160 μg m−3, respectively). Conclusions: O3 accumulation is present in ridge urban forest in all seasons. Foothill and valley urban forests have better air quality than ridge forestation. Urban forest air quality is better in spring and autumn than in summer and is better from night-time to early morning than from noon to afternoon.

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“…It has become a necessary facility for cities because of its economic and ecological contributions (Simpson et al 2008). They have a positive influence on the air quality (Fantozzi et al 2015;Bottalico et al 2016;Jayasooriya et al 2017) and an impact on the climate in cities (Moss et al 2018). Siljeg et al (2018) drew attention to the link between urban green spaces and the quality of inhab-itant's life.…”

Section: Introduction Uvodmentioning

confidence: 99%

The recreational potential of urban forests – an application of the assessment method

Levandovska

Kolejka

Šerá

et al. 2020

Šumar. list (Online)

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This paper is devoted to the method of recreational potential assessment of urban forests regarding the functional abilities - a set of indicators measuring of forest stands to recreation as a practical tool for urban forests management, landscape planning and administration authorities. One of the main research tasks presented in this paper was to use indicators which are understandable for ordinary users. This aspect is important, because it enables the method to be utilised for a wide range of participants, administrative collaborators that can assess urban forests in terms of their suitability for recreation. A test of the created methodology (a case study in "Horský park" forest in Bratislava) shows the suitability of evaluation on the recreational purposes of urban forests. The characteristics of each individual indicator designate the ways to enhance the recreational value of urban forests, and they may be used for sustainability of urban forests management.

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Spatio-temporal variations of ozone and nitrogen dioxide concentrations under urban trees and in a nearby open area

Cited by 69 publications

References 34 publications

Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

Spatiotemporal Ozone Level Variation in Urban Forests in Shenzhen, China

The recreational potential of urban forests – an application of the assessment method

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