Impacts of Land Use and Land Cover Changes on Regional Atmospheric Environment and Human Health in Changchun, Northeast China

Qiu, Jiaxin; Fang, Chunsheng; Tian, Naixu; Wang, Haofan; Ju, Wang

doi:10.2139/ssrn.4309433

Cited by 2 publications

(3 citation statements)

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“…During this time, the outdoor PM 2.5 concentrations in the Northeast region of China were found to be significantly higher than the national standards limit, as indicated by previous studies. 25,26 Since the front desk area was in close proximity to the entrances and exits of the fitness centre, it exhibited higher PM 2.5 concentration levels. Furthermore, the PM 2.5 concentrations in other areas of the fitness centre also exceeded the national limit of 0.075 mg/m 3 .…”

Section: Resultsmentioning

confidence: 99%

Factor analysis and risk assessment of indoor environmental parameters and TSV in fitness centres under different zones, exercise intensities and times

Cui,

Fan,

Zhou

et al. 2024

Indoor and Built Environment

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Maintaining regular physical exercise is essential for maintaining good health. In China, fitness centres are thriving, and the cleanliness of the exercise environment has become increasingly important. This study investigated the thermal response and indoor air environment of fitness personnel in various areas of a fitness centre using subjective evaluation and on-site air environment measurements. The findings revealed that the indoor air environment in different exercise areas of the fitness centre varied spatially, which can lead to discomfort amongst fitness personnel during exercise. Overall, the thermal sensation in different areas of the fitness centre was found consistently too hot. Temperature and humidity have the greatest impact on the thermal sensation of individuals in different areas, while indoor air pollutants have a minimal effect. The intensity and duration of exercise can also influence the body’s heat sensation and pollutant inhalation dose. The body’s heat balance mechanism can affect subjective evaluations. This study proposes three strategies for optimizing the indoor environment of fitness centres through principal component analysis. This paper provides data and a methodological framework for the development of specifications supporting the design, operation and management of the environment in fitness centres.

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Section: Resultsmentioning

confidence: 99%

Factor analysis and risk assessment of indoor environmental parameters and TSV in fitness centres under different zones, exercise intensities and times

Cui,

Fan,

Zhou

et al. 2024

Indoor and Built Environment

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“…Despite proactive measures to curb anthropogenic emissions, the incidence of ozone episodes is escalating alongside rapid urbanization (Lu et al, 2020;Yim et al, 2019). Numerous studies have investigated the effects of land use cover changes (LUCC) on air quality during urbanization using numerical models and the majority of these studies conclude that urbanization exacerbates air pollution (Qiu et al, 2023;Wang et al, 2022). However, such studies that depend on numerical models usually face the coarse-resolution land use cover data limitation (Ma et al, , 2019, which leads these studies to frequently overlook a passive abatement approach distinct from reducing anthropogenic sources-namely, the cultivation of urban green spaces (UGS) (Cohen et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…This increase in temperature is likely to further amplify the UGS-BVOC emissions (Zhou et al, 2015), influencing O₃ concentrations significantly. This interaction might explain why many regional numerical models underestimate urban surface ozone levels, as they often lack high-resolution land use cover data necessary to accurately estimate the UGS-BVOC emissions (Qiu et al, 2023;Wang et al, 2021;Wu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Unheralded contributions of biogenic volatile organic compounds from urban greening to ozone pollution: a high-resolution modeling study

Wang,

Li,

Liu

et al. 2024

Preprint

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Abstract. Urban Green Spaces (UGS) are widely advocated for mitigating urban atmospheric environment. However, this study reveals that it can exacerbate urban ozone (O3) levels under certain conditions, as demonstrated by a September 2017 study in Guangzhou, China. Utilizing the Weather Research and Forecasting Model with the Model of Emissions of Gases and Aerosols from Nature (WRF-MEGAN) and the Community Multiscale Air Quality (CMAQ) model with a high horizontal resolution (1 km), we assessed the impact of UGS-related biogenic volatile organic compound (BVOC) emissions on urban O3. Our findings indicate that UGS-BVOC emissions in Guangzhou amounted to 666.49 Gg, primarily from isoprene (ISOP) and terpenes (TERP). These emissions contribute ~30 % of urban ISOP concentrations and their incorporations to the model significantly reduce the underestimation against observations. The study shows improvements in simulation biases for NO2, from 7.01 µg/m3 to 6.03 µg/m3, and for O3, from 7.77 µg/m3 to -1.60 µg/m3. UGS-BVOC and UGS-LUCC (land use cover changes) integration in air quality models notably enhances surface monthly mean O3 predictions by 3.6–8.0 µg/m3 (+3.8–8.5 %) and contributes up to 18.7 µg/m3 (+10.0 %) to MDA8 O3 during O3 pollution episodes. Additionally, UGS-BVOC emissions alone increase the monthly mean O3 levels by 2.2–3.0 µg/m3 (+2.3–3.2 %) in urban areas and contribute up to 6.3 µg/m3 (+3.3 %) to MDA8 O3 levels during O3 pollution episodes. These impacts can extend to surrounding suburban and rural areas through regional transport, highlighting the need for selecting low-emission vegetation and refining vegetation classification in urban planning.

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Impacts of Land Use and Land Cover Changes on Regional Atmospheric Environment and Human Health in Changchun, Northeast China

Cited by 2 publications

References 0 publications

Factor analysis and risk assessment of indoor environmental parameters and TSV in fitness centres under different zones, exercise intensities and times

Factor analysis and risk assessment of indoor environmental parameters and TSV in fitness centres under different zones, exercise intensities and times

Unheralded contributions of biogenic volatile organic compounds from urban greening to ozone pollution: a high-resolution modeling study

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