Nie.
Już w samym artykule mamy ten kawałek:
"Urban trees and plants can improve mental and physical health. A 2015 study in Canada found that an average of 10 extra trees per block made people living there feel like they would be much healthier—as much as a $10,000 raise or being seven years younger would. The study participants believed that trees reduce air pollution—and it’s true, trees do pull ozone, particulates, and other pollutants into their leaves and out of the air that humans breathe. However, the research also showed that there are psychological benefits of living amid greenery: being around trees reduces stress as well as increases one’s propensity to exercise."
Raport NICE dotyczy drzew przy ulicach i możliwości fizycznego zmniejszania przez nich wentylacji powietrza. I według tegoż raportu mogą pogarszać wentylację, ale też mogą ją poprawiać, w zależności od wielu czynników.
"Evidence showed that street trees and green walls or roofs have a mixed effect on street air quality – in some cases they restrict street ventilation causing poorer air quality, in others they improve it.
Based on the evidence and committee consensus, a recommendation was made on the need to ensure the planting, siting and maintenance of trees does not restrict street ventilation. Because the evidence was weak, the committee made a 'consider' recommendation."
"Some people believe that trees reduce air pollution but this is not always true, and it is important to address this misconception. Their effect is dependent on factors including street design, number and siting of trees, species and canopy density, time of year and wind direction relative to the street.
Leaves and branches slow air currents, causing pollutants to settle out. They may also act as 'sinks' for particulates and chemicals that may have direct or indirect effects on air quality (in particular, volatile organic compounds [VOCs]). The extent to which this is the case depends on factors such as species, time of year and growing conditions.
The impact of trees on ventilation in a street canyon will influence their impact on air quality. Ventilation will vary according to the size, distribution and species of tree and their position within the canyon. For instance, air quality might deteriorate at street level near vehicle sources if ventilation were restricted, while improving near first floor windows above the canopy.
Although it is important to avoid the possible negative effects, it is also important to recognise the benefits of properly selected, sited and managed trees."
"They found that:
- vegetation that does not interfere with air flow in a street canyon (such as green roofs or walls, or vegetation not situated within a street canyon) may reduce air pollution
- street trees were unlikely to reduce air pollution in most street designs and could worsen it in some cases."
Nie. Już w samym artykule mamy ten kawałek: "Urban trees and plants can improve mental and physical health. A 2015 study in Canada found that an average of 10 extra trees per block made people living there feel like they would be much healthier—as much as a $10,000 raise or being seven years younger would. The study participants believed that trees reduce air pollution—and it’s true, trees do pull ozone, particulates, and other pollutants into their leaves and out of the air that humans breathe. However, the research also showed that there are psychological benefits of living amid greenery: being around trees reduces stress as well as increases one’s propensity to exercise." Raport NICE dotyczy drzew przy ulicach i możliwości fizycznego zmniejszania przez nich wentylacji powietrza. I według tegoż raportu mogą pogarszać wentylację, ale też mogą ją poprawiać, w zależności od wielu czynników. "Evidence showed that street trees and green walls or roofs have a mixed effect on street air quality – in some cases they restrict street ventilation causing poorer air quality, in others they improve it. Based on the evidence and committee consensus, a recommendation was made on the need to ensure the planting, siting and maintenance of trees does not restrict street ventilation. Because the evidence was weak, the committee made a 'consider' recommendation." "Some people believe that trees reduce air pollution but this is not always true, and it is important to address this misconception. Their effect is dependent on factors including street design, number and siting of trees, species and canopy density, time of year and wind direction relative to the street. Leaves and branches slow air currents, causing pollutants to settle out. They may also act as 'sinks' for particulates and chemicals that may have direct or indirect effects on air quality (in particular, volatile organic compounds [VOCs]). The extent to which this is the case depends on factors such as species, time of year and growing conditions. The impact of trees on ventilation in a street canyon will influence their impact on air quality. Ventilation will vary according to the size, distribution and species of tree and their position within the canyon. For instance, air quality might deteriorate at street level near vehicle sources if ventilation were restricted, while improving near first floor windows above the canopy. Although it is important to avoid the possible negative effects, it is also important to recognise the benefits of properly selected, sited and managed trees." "They found that: - vegetation that does not interfere with air flow in a street canyon (such as green roofs or walls, or vegetation not situated within a street canyon) may reduce air pollution - street trees were unlikely to reduce air pollution in most street designs and could worsen it in some cases."
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