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Vegetated roof systems: Design, prod...

Coffman, Reid R.

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Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology./
作者:	Coffman, Reid R.
面頁冊數:	226 p.
附註:	Adviser: Claudio Pasian.
Contained By:	Dissertation Abstracts International68-08A.
標題:	Agriculture, Plant Culture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3279787
ISBN:	9780549206118

Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology.
Coffman, Reid R.

Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology. - 226 p.

Adviser: Claudio Pasian.

Thesis (Ph.D.)--The Ohio State University, 2007.

The environmental technology of vegetated roof systems, also called green roofs or ecoroofs, depends on collaboration between designers and scientists. But this collaboration is difficult to carry out due to well-entrenched differences in disciplinary methods. To compensate this dissertation attempts to improve our conceptualization and dissemination of vegetative roof system projects and to extend our scientific knowledge of how these systems function. In Chapter 1, I offer designers a framework for the conceptualization of ecoroof projects and dissemination of knowledge about such systems. Problems in conceptualization are caused by ignorance, generality, complexity and obscurity, while problems in dissemination are created by a lack of communication and the number of research projects. I propose a design-research framework for the inclusion and communication of research agendas into design projects. This framework provides a design-research model and design-research domains to direct future projects and enhance collaboration.

ISBN: 9780549206118Subjects--Topical Terms:

1018669
Agriculture, Plant Culture.

Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology.
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245 1 0 $a Vegetated roof systems: Design, productivity, retention, habitat, and sustainablity in green roof and ecoroof technology.
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500 $a Source: Dissertation Abstracts International, Volume: 68-08, Section: A, page: 3181.
502 $a Thesis (Ph.D.)--The Ohio State University, 2007.
520 $a The environmental technology of vegetated roof systems, also called green roofs or ecoroofs, depends on collaboration between designers and scientists. But this collaboration is difficult to carry out due to well-entrenched differences in disciplinary methods. To compensate this dissertation attempts to improve our conceptualization and dissemination of vegetative roof system projects and to extend our scientific knowledge of how these systems function. In Chapter 1, I offer designers a framework for the conceptualization of ecoroof projects and dissemination of knowledge about such systems. Problems in conceptualization are caused by ignorance, generality, complexity and obscurity, while problems in dissemination are created by a lack of communication and the number of research projects. I propose a design-research framework for the inclusion and communication of research agendas into design projects. This framework provides a design-research model and design-research domains to direct future projects and enhance collaboration.
520 $a Innovation in ecoroof technology persists, but often occurs with assumed benefits possessing unknown consequences. Therefore, in Chapter 2, I describe the first scientific study, which was designed to evaluate experimentally the effect of substrate depth on net primary productivity, water retention, and water quality. My data revealed that deep substrate roofs retained 18% more rainwater while producing 2.5 times more biomass than shallow substrate roofs. Roofs using water recycling or run-on water produced up to 26% more biomass than those receiving only direct precipitation and did so without any significant reduction in retention. All roofs showed low productivity compared to grassland and forest ecosystems. Water quality was lowest in deep roofs, yet remained higher than receiving streams. This chapter demonstrates that ecoroof innovation should continue as a part of the technology's development.
520 $a The use of ecoroofs for the conservation of urban biodiversity is advocated by enthusiasts, yet the affects are largely unknown. In Chapter 3, I quantify animal diversity for several taxa on two vegetated roof systems and promote a methodological approach for such studies. I used a rapid assessment method to quantify the diversity of insects, spiders and birds on these ecoroofs based on relative abundance data. The Renyi family of diversity indices was used to compare diversity between the two ecoroofs. My data revealed relatively low similarity between the species assemblages, but a relatively strong similarity in community structure. Overall, the intensive ecoroof supported slightly higher diversity.
520 $a Finally, the overriding support for implementing ecoroof technology centers on the idea of improving urban sustainability, which goes unmeasured. Therefore, in Chapter 4, I use emergy analysis to quantify and compare the sustainability of three vegetated roof systems: an agricultural roof garden, a shallow-substrate ecoroof, and a deep-substrate ecoroof. The shallow-substrate ecoroof was the most sustainable (least unsustainable) of the three, followed by the deep-substrate ecoroof and the agricultural roof garden. All three systems were less sustainable than various agricultural practices, while being more sustainable than conventional landscapes, urban gardens and cities. These results confirm that vegetated roof systems can improve the sustainability of a city, but are reliant on many non-renewable resources for their construction and upkeep.
590 $a School code: 0168.
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650 4 $a Architecture. $3 523581
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