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Utility of Hydrophilic Polymer for Green Technology Development in Green Roofs Using Rainwater
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 Title & Authors
Utility of Hydrophilic Polymer for Green Technology Development in Green Roofs Using Rainwater
Ju, Jin-Hee; Yang, Ji; Yoon, Yong-Han;
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Hydrophilic polymer is suitable as soil conditioners for green roofs that use rainwater, due to promotion of water retention capacity as well as enhancement of the water absorbing capacity. The objective of the present study was to investigate the effects of different levels of hydrophilic polymer concentrations (0, 0.1, 0.2, 0.4, 0.8% w/w) on the water holding capacity and growth response of 6 species in soils amended with hydrophilic polymer in 5 cm of soil thickness on green roofs. The results showed that the water holding capacity of the amended soil improved with increasing amount of applied polymer. The application of 0.8% w/w of the polymer increased the soil moisture by 87% compared to the control, and decreased slowly in green roofs during an arid period. The growth of Sedum spurium 'Dragon's blood' and Lampranthus spectabilis increased significantly and had greater than 60% relative coverage with higher hydrophilic polymer concentrations. However, Juniperus chinensis var. sargentii and Euonymus fortunei var. radicans had no significant differences upon change of hydrophilic polymer concentrations. In Carex kujuzana and Carex morrowii 'Aurea variegata', growth decreased with increase of hydrophilic polymer concentrations. 30 days after planting, Juniperus chinensis var. sargentii, Euonymus fortunei var. radicans, Carex kujuzana, and Carex morrowii 'Aurea variegata' died back due to lowest soil thickness (5 cm), but Sedum spurium 'Dragon's blood' and Lampranthus spectabilis had greater than 90% survival.
Hydrophilic polymer;Rainwater used green roofs;Water conservation;Water holding capacity;
 Cited by
조방형 옥상녹화에서 노랑조팝나무의 활착에 미치는 토심별 유기질 토양개량제의 시용 효과,주진희;구은평;윤용한;

Journal of Environmental Science International, 2014. vol.23. 2, pp.239-248 crossref(new window)
저관리형 옥상녹화 식물생육을 위한 Hydrophilic polymer의 효용성,양지;윤용한;주진희;

한국환경생태학회지, 2014. vol.28. 3, pp.357-364 crossref(new window)
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