Extensive green roofs in coastal areas planted with halophytes can contribute to the species preservation of local salt marshes that are being destroyed and threatened by urban development and enhance the local landscape character of coastal areas. Additional, benefits of halophytes include drought tolerance and the ability to withstand saline conditions in coastal areas. Herein the plant growth of A. portulacoides a native Mediterranean halophyte established on an extensive green roof system that received the effects of two irrigation water amounts (100% ET₀ and 75% ET₀) defined by substrate hydraulic properties and three substrate types are presented. The duration of the experiment was 285 days. The substrates contained soil (S), pumice (Pum), pure sphagnum peat (P) and/or grape marc compost (C) in different volume ratios (15S:70Pum:15P, 15S:70Pum:15C and 15S:70Pum:7.5C:7.5P). The height, shoot canopy diameter, growth index, and ground cover percentage of plants were measured at regular intervals, and at the end of the experiment, both shoot and root dry weights were also measured. It was found that irrespective of substrate type, plant growth of A. portulacoides was healthy and similar in size for both irrigation treatments therefore with an aim to conserve water, the use of the 75% ET₀ irrigation treatment is proposed. The use of grape marc compost in the substrate (15S:70Pum:15C) is also proposed as it improved the substrate's nutrient content increasing most of the measured plant growth parameters of A. portulacoides. The use of grape marc compost as an alternative organic material to peat in green roof substrates would also contribute to the preservation of wetlands.

沿海地区种植盐生植物的大量绿色屋顶有助于保护当地盐沼的物种，这些盐沼受到城市发展的破坏和威胁，并增强了沿海地区的当地景观特征。另外，盐生植物的好处包括抗旱性和在沿海地区耐盐碱的能力。在此，A。portulacoides的植物生长是建立在广泛的绿色屋顶系统上的地中海原生盐生植物，该屋顶绿化系统受到两种灌溉水量的影响（100％ET ₀和75％ET ₀）由基材的水硬性定义，并提供了三种基材类型。实验持续时间为285天。基质包含不同体积比的土壤（S），浮石（Pum），纯泥炭泥炭（P）和/或葡萄渣堆肥（C）（15S：70Pum：15P，15S：70Pum：15C和15S：70Pum：7.5 C：7.5P）。定期测量植物的高度，枝冠直径，生长指数和地被植物的百分比，在实验结束时，还测量枝干和根的干重。已发现，不论底物类型如何，两种灌溉处理中的A. portulacoides的植物生长都是健康且大小相似，因此，为了节约用水，使用75％ET ₀建议进行灌溉处理。在基板中使用的葡萄果渣堆肥（15S：70Pum：15℃）也被提出作为它改善了衬底的养分含量增加大部分的所测量的植物生长参数的A. portulacoides。葡萄渣堆肥作为绿色屋顶基质中泥炭的替代有机材料的使用也将有助于保护湿地。