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Runoff and Water Quality in the Aspect of Environmental Impact Assessment of Experimental Area of Green Roofs in Lower Silesia

Author

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  • Grzegorz Pęczkowski

    (Institute of Environmental Protection and Management, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 24, 50-363 Wroclaw, Poland)

  • Katarzyna Szawernoga

    (Institute of Environmental Protection and Management, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 24, 50-363 Wroclaw, Poland)

  • Tomasz Kowalczyk

    (Institute of Environmental Protection and Management, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 24, 50-363 Wroclaw, Poland)

  • Wojciech Orzepowski

    (Institute of Environmental Protection and Management, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 24, 50-363 Wroclaw, Poland)

  • Ryszard Pokładek

    (Institute of Environmental Protection and Management, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 24, 50-363 Wroclaw, Poland)

Abstract

Green architecture, including green roofs, can limit the effects of urbanization. Green roofs soften the thermal effect in urban conditions, especially considering the significant increase in the European and global population and that a significant share of the age group, mainly the elderly is exposed to diseases caused by high temperatures. We studied runoff and the quality of water from green roof systems in Lower Silesia, within the area of the Agro and Hydrometeorology Station Wrocław-Swojec, in the years 2012–2016. In the study, two systems with a vegetation layer based on light expanded clay aggregate and perlite were analyzed. The studies were based on the assessment of peak flow reduction, rainwater volume preservation and peak wave reduction. The calculated maximum retention performance indicator, relative to rainfall, for perlite surfaces was up to 65%, and in relation to the control surface up to 49%. In addition, the quality of water from runoff was estimated in the conditions of annual atmospheric deposition, taking into account such indicators as electrolytic conductivity; the content of N, NO 3 , NO 2 , NH 4 , P, PO 4 ; and the content of metals, Cu, Zn, Pb and Cd. The load of total nitrogen exceeded the values of concentration in rainwater and amounted to 7.17 and 13.01 mg∙L −1 for leca and perlite, respectively. In the case of the metal content, significantly higher concentrations of copper and zinc from green surfaces were observed in relation to precipitation. For surfaces with perlite, these were 320 mg∙L −1 and 241 mg∙L −1 , respectively, with rainwater concentrations of 50 and 31 mg∙L −1 .

Suggested Citation

  • Grzegorz Pęczkowski & Katarzyna Szawernoga & Tomasz Kowalczyk & Wojciech Orzepowski & Ryszard Pokładek, 2020. "Runoff and Water Quality in the Aspect of Environmental Impact Assessment of Experimental Area of Green Roofs in Lower Silesia," Sustainability, MDPI, vol. 12(11), pages 1-15, June.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:11:p:4793-:d:370311
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    References listed on IDEAS

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    1. Agnieszka Karczmarczyk & Anna Baryła & Paweł Kożuchowski, 2017. "Design and Development of Low P-Emission Substrate for the Protection of Urban Water Bodies Collecting Green Roof Runoff," Sustainability, MDPI, vol. 9(10), pages 1-16, October.
    2. I. Gnecco & A. Palla & L.G. Lanza & P. Barbera, 2013. "The Role of Green Roofs as a Source/sink of Pollutants in Storm Water Outflows," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(14), pages 4715-4730, November.
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    Cited by:

    1. Marcin K. Widomski & Anna Musz-Pomorska & Justyna Gołębiowska, 2023. "Hydrologic Effectiveness and Economic Efficiency of Green Architecture in Selected Urbanized Catchment," Land, MDPI, vol. 12(7), pages 1-19, June.
    2. Szymon Szewrański & Jan K. Kazak, 2020. "Socio-Environmental Vulnerability Assessment for Sustainable Management," Sustainability, MDPI, vol. 12(19), pages 1-5, September.

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