Green roofs offset global warming study finds.
Green roof co2 absorption.
Green roofs can make a big contribution to reducing co 2 emissions.
1 field measurement of the difference of co 2 concentration at a location in the middle of the plants in a small plot of green roof and one in the surrounding area 2 experiments to measure the plant s co 2 absorption velocity and emission rate using a sealed glass chamber.
The study comprises three parts.
Green roofs reduce stormwater runoff mitigate urban heat island effects absorb dust and smog sequester carbon dioxide produce oxygen create space for food production and provide natural.
Water is stored by the roof s substrate and.
And 3 computer simulation of.
A study presented at the green roofs for healthy cities conference in june 2004 cited by the epa found water runoff was reduced by over 75 during rainstorms.
The co2 absorption rate of a plant in the daytime was much higher compared with the co2 emission rate at night providing the green roof ability to reduce the co2 concentration in the nearby region.
By also accounting for absorption in the roots and growing medium the total absorption is assumed to be many times greater.
Like any forested or vegetation covered area a patch of green on top of a roof should theoretically lower levels of carbon dioxide in the air.
Green roofs are sprouting up more and more on buildings.
Green roofs play a significant role in retrofitting the low impact development lid practices in urban areas.