Everyone know that tree diagram help clean the air by convert carbon dioxide into O - but it appear that they are able to do more than that . A late field of study has shown thatsilver birch treescan plunge as much as 50 % of the particulate matter topic generated by automobiles . This comes from Pb source Barbara Maher from the University of Lancaster and has been published in the journalEnvironmental Science & Technology .
Automobiles generate a lot of particulate matter matter ( PM ) in the form of exhaust , brake pad junk , and general metallic road dust . These corpuscle , which can be solid or liquified , are kicked up into the air . This PM has already been colligate torespiratory problems like asthma and lung disease , and those who live in urban preferences are at an increased risk for these diseases due to heavier and more frequent exposure . Because the bits are so little , they are easy breathe in and become embedded in respiratory tissue .
The subject sought to realize how tree control pollution , so that landscapers can get the most out of both manakin and procedure of the tree diagram . The investigator used silver birch Tree , which are found throughout Europe and in southwest Asia . It is important to take down that not all Tree have the same power to collect PM .
The studywas carried out on one metropolis pulley and PM content was determined base on dust sample drive from each of the eight homes participating in the experiment . This was done to determine how much promethium was being inspire by the families on the street . After initial sampling were taken , the street were then run along with silverish birch trees in front of four of the homes , effectively create a barrier between the home and the streets full of cars . A moist towelette was used to collect junk samples from the television screen door , while a PM detector skim the melody every ten minutes . At the ending of the nearly two - workweek - long trial , the research team noticed that the theater with a birch rod Sir Herbert Beerbohm Tree screen had over a 50 % decrease in metallic PM compared to the homes that did not .
The team then needed to find out how the tree diagram were able to filter out PM so efficiently . After examining leaf with a scanning negatron microscope , they discovered that midget hair - alike structures were responsible for removing the particulates from the air .
prominent amounts of further subject field are needed to see how pronto the leaves filter the PM , if it has any adverse affect on the trees , and if the PM will actually outride ensnare on the leaf or if it will rock out heavy Prime Minister to be blown on houses downwind .
