2,683
edits
Changes
Jump to navigation
Jump to search
Line 169:
Line 169: − Green roofs are primarily a practice used to partially achieve water balance and erosion control objectives through interception and [[Evapotranspiration| evapotranspiration]] of precipitation. Line 182:
Line 181: − +
→Performance
[[File:YorkU2.jpg|thumb|Detail showing the early root development through the mat to the granular planting medium.]]
[[File:YorkU2.jpg|thumb|Detail showing the early root development through the mat to the granular planting medium.]]
{| class="wikitable"
{| class="wikitable"
|+ Ability of green roofs to meet SWM objectives
|+ Ability of green roofs to meet SWM objectives
|}
|}
===Water Balance===
===Water Balance===
Controlled studies have indicated that maturing green roofs may have improved water retention properties <ref>De-Ville, S., Menon, M., Jia, X., Reed, G., Stovin, V. 2017. The impact of green roof ageing on substrate characteristics and hydrological performance. Journal of Hydrology. Volume 547. pp 332-344. https://doi.org/10.1016/j.jhydrol.2017.02.006.</ref>.
Green roofs are primarily a practice used to partially achieve water balance and erosion control objectives through interception and [[Evapotranspiration| evapotranspiration]] of precipitation. Controlled studies have indicated that maturing green roofs may have improved water retention properties <ref>De-Ville, S., Menon, M., Jia, X., Reed, G., Stovin, V. 2017. The impact of green roof ageing on substrate characteristics and hydrological performance. Journal of Hydrology. Volume 547. pp 332-344. https://doi.org/10.1016/j.jhydrol.2017.02.006.</ref>.
The key hydrologic benefit which green roofs have over other forms of LID is the proportion of the water returned to the atmosphere through [[Evapotranspiration| evapotranspiration]].
The key hydrologic benefit which green roofs have over other forms of LID is the proportion of the water returned to the atmosphere through [[Evapotranspiration| evapotranspiration]].