Sustainable green roofs: A comprehensive review of influential factors

Shahmohammad, Mohsen and Hosseinzadeh, Majid and Dvorak, Bruce and Bordbar, Farzaneh and Shahmohammadmirab, Hamid and Aghamohammadi, Nasrin (2022) Sustainable green roofs: A comprehensive review of influential factors. Environmental Science and Pollution Research, 29 (52). pp. 78228-78254. ISSN 0944-1344, DOI

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Green roofs have gained much attention as a modern roofing surface due to their potential to deliver many environmental and social benefits. Studies have indicated that different GR designs deliver different ecosystem services, and there are important factors that affect GR performance. This article reviewed significant factors that influence GR performance and sustainability. Substrate and drainage layer material choice significantly affects stormwater retention potential, leachate quality, plant survival, and determines GR environmental footprints. Subsequently, type of plants, their form, and kinds used on GRs impact GR ecosystem function. Leaf area is the most studied trait due to its influence on the cooling potential and energy performance. In order to achieve a sustainable GR, it is essential to select the type of plants that have a high survival rate. Perennial herbs, particularly forbs and grass as dominant groups, are heat and drought tolerant, which make them suitable in GR experiment. Furthermore, selecting a suitable irrigation system is as important as two other factors for having a sustainable GR. Irrigation is essential for plant survival, and due to the current pressure on valuable water sources, it is important to select a sustainable irrigation system. This review presents three sustainable irrigation methods: (i) employing alternative water sources such as rainwater, greywater, and atmospheric water; (ii) smart irrigation and monitoring; and (iii) using adaptive materials and additives that improve GR water use. This review sheds new insights on the design of high-performance, sustainable GRs and provides guidance for the legislation of sustainable GR.

Item Type: Article
Uncontrolled Keywords: Green roof; Local materials; Plant species; Sustainable irrigation; Integrated design; Environmental footprint
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Medicine
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Sep 2023 08:04
Last Modified: 26 Sep 2023 08:04

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