Position: Home > Articles > Screening on the Suitable Substrate Thickness for Extensive Roof Greening
Forestry and Environmental Science
2018
(2)
58-63
简单式屋顶绿化基质厚度筛选
作 者：
叶少萍;张俊涛;苏杨;许昌超
关键词：
简单式屋顶绿化;基质厚度;屋顶绿化植物;植物盖度;蓄水盆
摘 要：
薄层基质技术是降低屋顶负荷的关键,筛选满足简单式屋顶绿化植物生长和快速覆盖的最小基质厚度显得尤为必要。通过蓄水盆栽培试验,研究了基质厚度2,4,6,8 cm对八宝景天(Sedum spectabile)、佛甲草(Sedum lineare)、长寿花(Kalanchoe blossfeldiana)、吊竹梅(Zebrina pendula)、铺地锦竹草(Callisia repens)地被植物生长及覆盖效率的影响。结果表明:基质厚度越大,植物长势越好;基质厚度为8 cm时,直立生长型植物八宝景天株高、根系体积、最长根长、地上部和地下部生物量均显著高于其它厚度处理(P<0.05);吊竹梅在基质厚度6 cm时最快36 d达到100%覆盖,铺地锦竹草则在基质厚度6,8 cm时最快45 d达到100%覆盖;佛甲草、长寿花则生长较慢,基质越薄、成活率越低。综合分析植物生长指标,建议八宝景天、吊竹梅、铺地锦竹草可选择最小基质厚度分别为8,6,4 cm;佛甲草、长寿花最小基质厚度则需要继续开展试验研究。
译 名：
Screening on the Suitable Substrate Thickness for Extensive Roof Greening
作 者：
YE Shaoping;ZHANG Juntao;SU Yang;XU Changchao;Guangzhou Institute of Forestry and Landscape Architecture;
单 位：
YE Shaoping%ZHANG Juntao%SU Yang%XU Changchao%Guangzhou Institute of Forestry and Landscape Architecture
关键词：
extensive roof greening;;substrate thickness;;roof greening plants;;vegetation coverage;;water storage container
摘 要：
Thin-layer substrates techniques contributes a lot to reducing the load bearing of roof. The screening and using of the suitable substrates thickness for the fast growth and coverage of roof greening plants become more and more necessary. Planting experiments with Sedum spectabile, Sedum lineare, Kalanchoe blossfeldiana, Zebrina pendula and Callisia repens in water storage containers were performed to study the effects of different substrate thicknesses(2, 4, 6 and 8 cm) on plants growth and coverage rate. The results showed that the plants grew better with the increase of the substrate thickness. When the thickness of the substrate was 8 cm, the plant height, root volume, the longest root length, the overground and underground part biomass of S. spectabile were significantly higher than the other three thickness treatments(P<0.05). The 100% vegetation coverage of Z. pendula needed at least 36 days in 6 cm thickness substrate and that of C. repens needed at least 45 days in 6 cm or 8 cm thickness substrate. S. lineare and K. blossfeldiana grew slowly and their survival rates became lower as the decrease of substrates thickness. A comprehensive analysis of plant growth indexes suggested that the minimum cultivation substrate thickness for S. spectabile, Z. pendula and C. repens were 8 cm, 6 cm and 4 cm, respectively. Besides, more experiments are needed for screening on the minimum cultivation substrate thickness of Sedum lineare and Kalanchoe blossfeldiana.
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