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Assessment of Plant Growth and Soil Properties of Extensive Green Roof System for Rhododendron indicum Sweet  

Kim, In-Hea (Department of Landscape Architecture, Jinju National University)
Huh, Keun-Young (Department of Landscape Architecture, Jinju National University)
Shin, Hyeon-Cheol (Southern Forest Research Center, Korea Forest Research Institute)
Park, Nam-Chang (Southern Forest Research Center, Korea Forest Research Institute)
Publication Information
Horticultural Science & Technology / v.28, no.6, 2010 , pp. 1057-1065 More about this Journal
Abstract
Recent urban concerns over environmental problems have furthered interest in green roof system. Plant growth and load bearing capacity of an underlying roof are key factors to determine an optimal system. This study was carried out to develop an optimal extensive green roof system for shrubs assessing the effects of substrate type and soil depth on the growth of $Rhododendron$ $indicum$ Sweet. in the experimental systems with different soil types and depths from 2001 to 2008. Substrate types of perlite alone and blended with sandy loam (v/v, 1:1) were used on the experimental systems with depths of 30 cm, 45 cm, and 60 cm. The survival rate of the plants on the perlite alone + 45 cm soil depth system (RS-A-45) was 100% during the experimental period, while those on the perlite alone + 30 cm soil depth system (RS-A-30) and perlite blended + 60 cm soil depth system (RS-B-60) showed 33% and 67%, respectively, in 2008. The overall plant growth and soil properties of RS-A-45 were superior to the others. At 8 years after installation, the total weight of RS-A-45 including plant fresh weight was about $376.6kg{\cdot}m^{-2}$ in field capacity indicating RS-A-45 can be optimal extensive and light weight green roof system.
Keywords
artificial substrate; load bearing capacity; perlite; soil depth; survival rate;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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