Centre for Water Management and Reuse, School of Natural and Built Environments, University of South Australia, Adelaide, Australia.
Centre for Water Management and Reuse, School of Natural and Built Environments, University of South Australia, Adelaide, Australia.
Sci Total Environ. 2014 Apr 1;476-477:288-97. doi: 10.1016/j.scitotenv.2014.01.014. Epub 2014 Jan 25.
Green roofs as one of the components of water-sensitive urban design have become widely used in recent years. This paper describes performance monitoring of four prototype-scale experimental green roofs in a northern suburb of Adelaide, South Australia, undertaken over a 1-year period. Four species of indigenous Australian ground cover and grass species comprising Carpobrotus rossii, Lomandra longifolia 'Tanika,' Dianella caerula 'Breeze' and Myoporum parvifolium were planted in extensive and intensive green roof configurations using two different growing media. The first medium consisted of crushed brick, scoria, coir fibre and composted organics while the second comprised scoria, composted pine bark and hydro-cell flakes. Plant growth indices including vertical and horizontal growth rate, leaf succulence, shoot and root biomasses, water use efficiency and irrigation regimes were studied during a 12-month period. The results showed that the succulent species, C. rossii, can best tolerate the hot, dry summer conditions of South Australia, and this species showed a 100% survival rate and had the maximum horizontal growth rate, leaf succulence, shoot biomass and water use efficiency. All of the plants in the intensive green roofs with the crushed brick mix media survived during the term of this study. It was shown that stormwater can be used as a source of irrigation water for green roofs during 8 months of the year in Adelaide. However, supplementary irrigation is required for some of the plants over a full annual cycle.
绿色屋顶作为水敏性城市设计的组成部分之一，近年来得到了广泛应用。本文描述了在澳大利亚阿德莱德市北部郊区进行的为期一年的四个原型尺度实验性绿色屋顶的性能监测。在广泛和密集的绿色屋顶配置中，使用了两种不同的生长介质，种植了四种澳大利亚本土的地被植物和草种，包括 Carpo botrus rossii、 Lomandra longifolia 'Tanika'、 Dianella caerula 'Breeze' 和 Myoporum parvifolium。研究了植物生长指数，包括垂直和水平生长率、叶片多汁性、茎和根生物量、水分利用效率和灌溉制度。结果表明，肉质植物 C. rossii 能最好地耐受南澳大利亚炎热干燥的夏季条件，该物种的存活率为 100%，水平生长率、叶片多汁性、茎生物量和水分利用效率最高。在使用碎砖混合介质的密集型绿色屋顶中，所有植物在研究期间都存活下来。研究表明，在阿德莱德，雨水可以在一年中的 8 个月作为绿色屋顶的灌溉水源。然而，一些植物在全年都需要补充灌溉。
