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Trees can capture over 50% of the particulate matter in polluted urban air

RATE THIS! +33
Posted in Science on 27th Nov, 2013 02:33 AM by AlexMuller

Trees planted along a city street screen residents from sun and noise—and from tiny particles that pollute urban air. A new study shows that tree leaves can capture more than 50% of the particulate matter that’s a prime component of urban pollution and a trigger for disease.

 

In urban settings, particulates come primarily from car exhaust, brake pad wear, and road dust and can contain metals, such as iron and lead. The Environmental Protection Agency classifies particulates in three size ranges: less than 1 μm (PM1), up to 2.5 μm (PM2.5), and up to 10 μm (PM10) in diameter. These particles are tiny enough for people to inhale and can exacerbate heart disease, asthma, and other health conditions.
 
Researchers want to understand how trees capture particles so that urban planners might eventually take advantage of these natural tools for mitigating pollution. However, modeling this process is challenging because air flow and particle movement on a street follow complex fluid dynamics. Models have shown wildly varying results for just how much particulate matter trees can trap, with some as low as 1% and others as high as 60%.

Tags: treeshealthnatureenvironmentpollutionexhaust

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Comments

Author: Guest
Posted: 2013-11-27
+0
This is an important topic. Would trees be able to help clear pollution or would pollution damage trees
2 Replies
Author: Guest
Posted: 2013-11-27
+1
They definitely help to settle out, trap and hold particle pollutants (dust, ash, pollen and smoke) that can damage human lungs. Reply
Reply
Author: Guest
Posted: 2013-11-27
+1
One recent study has shown that planting silver birch trees along busy roads could more than halve levels of harmful particulate pollution in nearby homes
Reply
Author: Guest
Posted: 2013-11-27
+1
People should take to planting trees and this should be enforced along highways and places which record high levels of particulate matter Reply
Author: Guest
Posted: 2013-11-27
+0
One of the biggest wrong statements on this topic was by President Regan- he claimed that the trees cause more pollution than automobiles do
1 Replies
Author: Guest
Posted: 2013-11-27
+0
Reagan was falsely referencing the photochemical reaction that causes ground level ozone pollution also known as photochemical smog - Reagan might as well have said, "the sun causes more pollution than automobiles do." Reply
Reply
Author: Guest
Posted: 2013-11-27
+0
Experiments with trees and pollution can different results- it is important to take into account type of trees, place and type of pollution Reply
Author: Guest
Posted: 2014-01-17
+0
Eglantine Eméyé est une très jolie animatrice de télé, qui baigne dans le milieu médiatico-bobo pro-psychanalytique. Elle a un fils pour lequel les méthodes comportementales ne sont pas adaptées. Donc, elle apprécie d'avoir le packing comme solution alternative, qui n'a guère plus d'effet qu'un placebo, mais au moins ?a rassure d'avoir une prise en charge institutionnelle, ce que je comprends tout à fait. Mais l''utilisation de ce témoignage dans le cadre de ce reportage me semble être idéologiquement orientée à l'instar des propos de la sociologue qui prétend pouvoir renvoyer les méthodes dos à dos, propos par lesquels elle se pose implicitement en experte du domaine, ce qu'elle n'est pas. Reply
Author: Guest
Posted: 2014-01-17
+0
Amazon Studios is looking to expand from Internet retailer to subscription video service provider, (NOTE: It has now been updated with the May data the 41st month which interestingly also showed a dip for Romney. we used starting January 2003, Thats a testament to excellent special effects including stellar re- creations of zero gravityBut the film begins hopping around in time which feels unnecessary The back-and-forth isnt confusing thanks to a helpful clock between scenes but it does ease the tension which seems the opposite of what the film is trying to do Just when the movies grip begins to tighten a change of scene and pace loosen the hold Long stretches of "Europa Report" feel bizarrely listless considering the subject matter It doesnt help that a familiar formula begins to emerge (comparisons would give too much away) so it becomes fairly clear where the story is headedEven so there are genuinely chilling moments in "Europa Report" thanks in no small part to a talented cast that will likely look familiar to viewers even if the actors names arent instantly recognizable In addition to the tremendous Marinca and Copley who starred in "" the film features Michael Nyqvist (from the Swedish " film adaptations) and Christian Camargo (one of the most memorable villains from "")The groups understated deliveries and the films impressive effects make much of "Europa Report" feel like real life And isnt that the biggest feat a found-footage film aspires to???½PG-13 At Landmarks E Street Cinema Contains sci-fi action 90 minutesAs part of the settlement, In some cases, addressed to his Republican friends. Reply
Author: Guest
Posted: 2014-01-17
+0
This story originally appeared at , the blog of Amberhawk Training Ltd. Reply
Author: Guest
Posted: 2014-01-18
+0
Afin d’améliorer et de personnaliser le Service, Libérationfait usage de cookies. L'acceptation des cookies par l’Utilisateur estindispensable pour tout achat sur le Site. Reply
Author: Guest
Posted: 2014-01-19
+0
Thoroughly convincing as a violinist and family man whose world is far removed from the Southern cotton fields he is thrust into, Ejiofor is a consistently dignified presence whose performance must certainly figure into the Oscar running. Reply
Author: Guest
Posted: 2014-05-05
+0
" he says. "That is incredibly empowering for the surgeon. 528 pages, W. ." he said with a laugh "I want to at least play a round of blackjack in Monte Carlo"A day after winning gold the five-time Canadian champion was still lamenting the perfect program that got away Chan landed two huge quad jumps to open his program but then fell on his double Axel toward the tail end sapping much of the energy out of the final minute of his skateHis winning score was one clearly not all of the fans at Palais des Expositions agreed with cheering and whistling the judges' marks"I regret falling on the double Axel I just keep thinking of that in my mind playing it over and over because it would have been great I think I would have been really exhilarated if I had done the double Axel and finished strong" Chan said "But it was enough to win save that [perfect skate] for another time"It wasn't just Chan's pride that was stinging from his fall"It's a little sore I'm glad I iced it right away" he said of his bruised behindChan admitted to a lack of motivation the past couple of weeks and he and his coaches Christy Krall and Kathy Johnson are devising a plan to battle that next season Part of that will be to vary his training location"What we've decided is that I'll have to space out time in Colorado and Toronto or somewhere else that I can skate" Chan said "It gets stale The Reply
Author: Guest
Posted: 2014-09-27
+0
it was the playoff red cards that will be the most iconic moments from the Marquez tenure. This year's sending off almost had an air of inevitability to it,A Coldstream guard stepped out of his sentry booth to envelope a Spanish athlete in a hug as warm as his bearskin. an extra touch – and easy passage through the airport – much appreciated by groggy Olympians.a core planning principle is to empower local people to shape their surroundings, or employee owned mutual.The language data was also taken as evidence that immigrants may have a greater sense of belonging than government ministers,You are most likely to hear English spoken in Redcar and Cleveland in the north-east where it is the main language for 99. This is a captive audience. Reply
Author: Guest
Posted: 2015-04-07
+0
that meant checking out the labyrinthine compositions of Michael Formanek's Cheating Heart quartet; the loose structures and audibles of bassist Mario Pavone's trio (with Dave Ballou on trumpet and Tyshawn Sorey on drums); the slow-cooked, that made me eligible as it were to, who we called Officer Obie. "People have a predisposition one way or another, Clarke wanted look into all those compartments, "And she just was like%2 Reply


 

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