Green Roof Co2 Absorption

And 3 computer simulation of.

Green roof co2 absorption.

Water is stored by the roof s substrate and. By also accounting for absorption in the roots and growing medium the total absorption is assumed to be many times greater. Experimental studies have shown that an extensive sedum roof can absorb approximately 1 2 kg of co 2 m 2 year in the plants themselves. Green roofs play a significant role in retrofitting the low impact development lid practices in urban areas.

The study comprises three parts. Green roofs not only help reduce the urban heat island effect by covering conventional dark roofing surfaces with vegetation which absorbs less heat but they also use solar radiation to evaporate water from the growing media and transpire the absorption of water through a plants roots and release of it through its leaves as a vapor moisture. 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. Green roofs offset global warming study finds.

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. Of these topics green roof stormwater runoff quality is the second most highly investigated 62 papers 16. 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. Green roofs can make a big contribution to reducing co 2 emissions.

In 2010 a review of green roof runoff water quantity and. For the initial searching of scopus and web of science wos the criteria used was ts green roof carbon sequestration or green roof co2 sequestration or green roof for air pollutant removal or green roof as pollution abatement or roof vegetation for carbon emission reduction or green roof environmental benefits with timespan 2000 march. 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. 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.

Air pollution is a relative new topic area 15 papers 4 which includes findings on carbon dioxide co 2 sequestration.