Monteiro Cristina M, Calheiros Cristina S C, Palha Paulo, Castro Paula M L
CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Arquiteto Lobão Vital, Universidade Católica Portuguesa, Apartado 2511, 4202-401 Porto, Portugal E-mail:
Neoturf, Rua das Amoreiras, 155, 4460-227 Senhora da Hora, Portugal.
Water Sci Technol. 2017 Sep;76(5-6):1081-1089. doi: 10.2166/wst.2017.276.
Green roof technology has evolved in recent years as a potential solution to promote vegetation in urban areas. Green roof studies for Mediterranean climates, where extended drought periods in summer contrast with cold and rainy periods in winter, are still scarce. The present research study assesses the use of substrates with different compositions for the growth of six aromatic plant species - Lavandula dentata, Pelargonium odoratissimum, Helichrysum italicum, Satureja montana, Thymus caespititius and T. pseudolanuginosus, during a 2-year period, and the monitoring of water runoff quality. Growing substrates encompassed expanded clay and granulated cork, in combination with organic matter and crushed eggshell. These combinations were adequate for the establishment of all aromatic plants, allowing their propagation in the extensive system located on the 5th storey. The substrate composed of 70% expanded clay and 30% organic matter was the most suitable, and crushed eggshell incorporation improved the initial plant establishment. Water runoff quality parameters - turbidity, pH, conductivity, NH, NO, PO and chemical oxygen demand - showed that it could be reused for non-potable uses in buildings. The present study shows that selected aromatic plant species could be successfully used in green roofs in a Mediterranean climate.
近年来，绿色屋顶技术不断发展，成为促进城市地区植被生长的一种潜在解决方案。针对地中海气候的绿色屋顶研究仍然较少，在地中海气候区，夏季干旱期较长，冬季寒冷多雨。本研究评估了不同成分的基质对六种芳香植物——齿叶薰衣草、香叶天竺葵、意大利蜡菊、山地风轮菜、丛生百里香和假绵毛百里香——在两年内生长的影响，并监测了径流的水质。种植基质包括膨胀粘土和颗粒状软木，以及有机物质和碎蛋壳。这些组合适合所有芳香植物的生长，使其能够在位于五楼的粗放式系统中繁殖。由70%膨胀粘土和30%有机物质组成的基质是最合适的，添加碎蛋壳改善了植物的初期生长。径流的水质参数——浊度、pH值、电导率、铵、硝酸盐、磷酸盐和化学需氧量——表明，其可再用于建筑物的非饮用水用途。本研究表明，选定的芳香植物物种可成功用于地中海气候区的绿色屋顶。
