Event size, substrate water content and vegetation affect storm water retention efficiency of an un-irrigated extensive green roof system in Central Texas
Abstract
Unirrigated green roof trays were installed in a warm and dry Texas climate. Retention efficiency was 100% for events <7.4mm and declined with increasing event size. Increased plant species cover increased retention efficiency. Drier green roof substrate provided additional retention benefits for large events. Finding species that survive on unirrigated roofs will be a major challenge in dry climates.
- Publication:
-
Sustainable Cities and Society
- Pub Date:
- February 2014
- DOI:
- Bibcode:
- 2014SusCS..10...59V
- Keywords:
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- Ecosystem service;
- Stormwater management;
- Vegetated roof