Green Roof Co2 Absorption

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 roof co2 absorption.

Such as the ability to absorb carbon dioxide reduce stormwater runoff limit heat absorption and provide habitats for insects birds. Green roofs can make a big contribution to reducing co 2 emissions. By also accounting for absorption in the roots and growing medium the total absorption is assumed to be many times greater. Green roofs can reduce stormwater runoff via water wise gardening techniques.

Water is stored by the roof s substrate and. The study comprises three parts. 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. 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.

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 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. 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.