Increasing green roof plant drought tolerance through substrate modification and the use of water retention gels

Young, Thomas M.; Cameron, Duncan D.; Phoenix, Gareth K.

doi:10.1080/1573062x.2015.1036761

Cited by 27 publications

(10 citation statements)

References 43 publications

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“…According to it, fillings of plants modules presented plenty of solid growing medium, such as gravel, expanded clay, shingle, growstones, pumice, rock wool, perlite, vermiculite, coconut fiber, rice husks, thatch, straw, sand, or the like. In study [4] the impact of two substrate components assessed: brick particle size and a polyacrylamide gel additive, living mulch on the growth, physiological and visual health of newly established green rooftops during 25 days of extreme drought, and this study shows that coarser particle size substrates can significantly improve the drought tolerance of plants on green roof.…”

Section: Key Benefits Of Green Roof Systemsmentioning

confidence: 78%

Modular Green Roofs in Urban Ecospace

Korol¹,

Shushunova²

2018

Landscape Architecture - The Sense of Places, Models and Applications

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This chapter essentially starts with green roof systems in an overview of the green building industry. Various green roof systems, traditional green roof structures, and innovative modular green roofs are also examined. The advantages of these systems are delineated. Likewise, the most important green roof technologies, the factors that impact the decision to choose roofing system, which are recommended for adoption, are discussed. The greatest value of installing modular green roof systems as a successful solution for urban ecospaces is also explained here. Green roof benefits and values are considered as well as important advance on sustainable development of landscape planning and design of the environment, including modern green infrastructure elements. This study analyses both traditional green roof structures, co-called green roof "pie," and innovative modular green roof systems. Finally, the influence and impact of green features on green building development and standard documents required and related issues are examined.

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Section: Key Benefits Of Green Roof Systemsmentioning

confidence: 78%

Modular Green Roofs in Urban Ecospace

Korol¹,

Shushunova²

2018

Landscape Architecture - The Sense of Places, Models and Applications

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“…Soil physical and chemical properties could be improved by different soil amendments [37][38][39][40]. Water retention capacity and available water content could be greatly improved by organic manures [37], organic waste recycled in agriculture [38], Zeolites [39], the use of different types of biochar [40][41][42], or synthetic hydrogels [43,44]. Constructed green roofs with a deeper substrate layer could also retain more water and reduce runoff volume [45][46][47].…”

Section: Discussionmentioning

confidence: 99%

Water Resilience by Centipedegrass Green Roof: A Case Study

et al. 2019

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Centipedegrass (Eremochloa ophiuroides) is a low-maintenance turfgrass. The first extensive green roof of centipedegrass was established in TongZhou Civil Squares in 2014. However, storm-water-runoff reduction, water-retention capacity, and plant-water requirements by a centipedegrass green roof has not yet been defined. The soil moisture dynamics, rainwater-retention capacity, runoff reduction, and plant evapotranspiration were investigated by simulated centipedegrass green roof plots, which were constructed in the same manner as the green roofs in TongZhou Civil Squares in 2018. The results showed that the centipedegrass green roof retained 705.54 mm of rainwater, which consisted 47.4% of runoff reduction. The saturated soil moisture was 33.4 ± 0.6%; the excess rainfall over the saturated soil moisture resulted in runoff. The capacity of rainwater retention was negatively related to the soil moisture before rain events and was driven by plant evapotranspiration. Drought symptoms only occurred three times over the course of a year when the soil moisture dropped down to 10.97%. Our results indicate that the rainwater retained in the soil almost met the needs of plant consumption; a further increase of rainwater retention capacity might achieve an irrigation-free design in a centipedegrass green roof.

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“…Bates et al (2015) found plant recovery from drought was facilitated by media characteristics, with media high in crushed brick performing the best from a group of recycled aggregate materials tested. Additives for increasing the water holding capacity of media such as polyacrylamide gel have been shown to significantly increase plant recovery following a drought period (Young et al, 2015), while others have shown biologically based additives such as seaweed hold promise to improve both water and nutrient holding capacity of greenroof media (Vijayaraghavan and Joshi, 2015). integrating greenroofs with other stormwater practices (e.g., rainwater harvesting and landscape irrigation) to reduce potential impacts of nutrient export.…”

Section: Field Laboratory and Modeling Hydrologicmentioning

confidence: 99%

Urban Stormwater Characterization, Control, and Treatment

Vogel

Moore²

2016

Water Environment Research

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The following review presents a synthesis of 181 journal articles published during 2015 that represent progress toward better characterizing, controlling, and treating urban stormwater runoff. The review is structured by general topical areas related to (1) stormwater quality and quantity characterization; (2) engineered stormwater control and treatment practices, including erosion and sediment control, stormwater ponds, constructed stormwater wetlands, bioretention, permeable pavement, greenroofs, and rainwater harvesting systems; and (3) watershed-scale modeling and optimization of stormwater control and treatment practices. Common research themes emerging from this collection of studies include potential to enhance hydrologic and pollutant treatment performance of stormwater practices via media amendments and the use of innovative outlet control structures, as well as development of a more mechanistic understanding of hydrologic and water-quality functions to inform modeling and performance predictions. These studies serve to expand the field's knowledge base and will inform future efforts to further improve stormwater control and treatment at various spatial and temporal scales.

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Increasing green roof plant drought tolerance through substrate modification and the use of water retention gels

Cited by 27 publications

References 43 publications

Modular Green Roofs in Urban Ecospace

Modular Green Roofs in Urban Ecospace

Water Resilience by Centipedegrass Green Roof: A Case Study

Urban Stormwater Characterization, Control, and Treatment

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