Urban Ecosystems

, Volume 11, Issue 4, pp 385–398

Influence of vegetation composition on runoff in two simulated green roof experiments

  • Nigel Dunnett
  • Ayako Nagase
  • Rosemary Booth
  • Philip Grime


Despite the fact that green roofs are based upon living systems, the majority of published research literature contains little specific information on the contribution of plants to the various functions and properties of green roofs. Furthermore, there has been little investigation of the influence of the composition of vegetation on the physical properties of a green roof system. This paper reviews previously published material that throws light on the role of vegetation composition on green roof function, with particular regard to rainwater runoff. Two experiments at the University of Sheffield, UK, are considered in detail: (a) An outdoor lysimeter experiment that investigated the quantity of runoff from trays containing 100 mm of growing medium and combinations of grasses and forbs, together with bare substrate, and (b) a greenhouse experiment using simulated rainfall to estimate the amount of rainfall intercepted by different vegetation types. In both cases the vegetation ranged from simple monocultures of forbs and grasses through to complex mixtures of both. In both cases, the composition of the vegetation was found to significantly affect both the amount of water retained and released from the system.


Green roof Rainfall Runoff Vegetation composition 


  1. Booth R, Grime JP (2001) The role of diversity in the maintenance of community and ecosystem function: intra and inter specific diversity. Doctoral Thesis, The University of Sheffield, Sheffield, UKGoogle Scholar
  2. Boivin M, Lamy M, Gosselin A, Dansereau B (2001) Effect of artificial substrate depth on freezing injury of six herbaceous perennials grown in a green roof system. HortTechnology 11:409–412Google Scholar
  3. Brenneisen S (2006) Space for urban wildlife: designing green roofs as habitats in Switzerland. Urban Habitats 4:27–36Google Scholar
  4. Couturier DE, Ripley EA (1973) Rainfall interception in mixed grass prairie. Can J Plant Sci 53(3):659–663CrossRefGoogle Scholar
  5. Crockford RH, Richardson DP (2000) Partitioning of rainfall into throughfall, stemflow, and interception: effect of forest type, ground cover and climate. Hydrol Process 14:2903–2920CrossRefGoogle Scholar
  6. Dunnett NP, Nolan A (2004) The effect of substrate depth and supplementary watering on the growth of nine forbaceous perennials in a semi-extensive green roof, Proceedings of the International Conference on Urban Horticulture. Acta Hort 643:305–310Google Scholar
  7. Gedge D, Kadas G (2004) Bugs, bees, and spiders: green roof design for rare invertebrates. Greening Rooftops for Sustainable Communities, Proceedings of the Second North American Green Roofs Conference, Boston, May 2003: The Cardinal GroupGoogle Scholar
  8. Hitchmough JD, Kendle A, Paraskevopoulou A (2001) Seedling emergence, survival and initial growth of forbs and grasses native to Britain and central/southern Europe in low productivity urban ‘waste’ substrates. Urban Ecosyst 5:255–308<!–-[AU2] Reference list | Hitchmough et al. (2001) was found in the reference list but was not cited in the text. Please provide citation.-->CrossRefGoogle Scholar
  9. Kadas G (2006) Rare invertebrates colonizing green roofs in London. Urban Habitats 4:66–86 http://www.urban habitats.org Google Scholar
  10. Kolb W, Schwarz T (1986a) ‘Zum Klimatisierungseffekt von Pflanzenbeständen auf Dächern, Teil I’, Zeitschrift für Vegetationstechnik 9/1986, re-published in Veitshoechheimer Berichte, Heft 39, ‘Dachbegrünung’Google Scholar
  11. Kolb W, Schwarz T (1986b) ‘Zum Klimatisierungseffekt von Pflanzenbeständen auf Dächern, Teil II', Zeitschrift für Vegetationstechnik 9/1986, re-published in Veitshoechheimer Berichte, Heft 39, ‘Dachbegrünung’Google Scholar
  12. Lloyd PS (1972) Effects of fire on a Derbyshire grassland community. Ecology 55(3):915–920CrossRefGoogle Scholar
  13. Mentens J, Raes D, Hermy M (2006) Green roofs as a tool for solving the rainwater runoff problem in the urbanized 21st century? Landsc Urban Plan 77:217–226CrossRefGoogle Scholar
  14. Monterusso MA, Rowe DB, Rugh CL, Russel DK (2004) Runoff water quantity and quality from green roof systems. Acta Hort 639:369–376Google Scholar
  15. Naeth M, Baily A, Chanasyk D, Pluth D (1991) Water holding capacity of litter and soil organic matter in mixed prairie and fescue grassland ecosystems of Alberta. J Range Manag 44(1):13–17CrossRefGoogle Scholar
  16. Oberndorfer E, Lundholm J, Bass B, Coffman R, Doshi H, Dunnett N, Gaffin S, Kohler M, Liu K, Rowe B (2007) Green roofs as urban ecosystems: ecological structures, functions and services. BioScience 57:823–833CrossRefGoogle Scholar
  17. Rowe DB, Rugh CL, VanWoert N, Monterusso MA, Russell DK (2003) Green roof slope, substrate depth, and vegetation influence runoff, p. 354–362. In Proc, of 1st North American Green Roof Conference: Greening Rooftops for Sustainable Communities, Chicago. 29–30 May 2003. The Cardinal Group, TorontoGoogle Scholar
  18. Snodgrass E, Snodgrass L (2006) Green roof plants. Timber, Portland, OregonGoogle Scholar
  19. Tilman D, Lehman CL, Thomson KT (1997) Plant diversity and ecosystem productivity: theoretical considerations. Proc Natl Acad Sci U S A 94:1857–1861PubMedCrossRefGoogle Scholar
  20. VanWoert ND, Rowe DB, Andresen JA, Rugh CL, RT Fernandez, Xiao L (2005) Green roof stormwater retention: effects of roof surface, slope, and media depth. J Environ Qual 34:1036–1044PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Nigel Dunnett
    • 1
  • Ayako Nagase
    • 1
  • Rosemary Booth
    • 2
  • Philip Grime
    • 2
  1. 1.The Green Roof Centre, Department of LandscapeUniversity of SheffieldSheffieldUK
  2. 2.Department of Animal and Plant SciencesUniversity of SheffieldSheffieldUK

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