Evaluating the Life Cycle Assessment of Rain Gardens and Green Walls for a Sustainable Environment
Keywords:
- Green infrastructure,
- Rain gardens,
- Green walls,
- Urban sustainability,
- Ecosystem services
Abstract
With fast urbanization and increasing climate pressures, Green Infrastructure (GI) has emerged as a feasible sustainable alternative to urban environmental issues. Among the many GI strategies, Rain Gardens (RGs) and Green Walls (GWs) are frequently applied for storm water management, thermal insulation, and biodiversity. This study conducts a comparative Life Cycle Assessment (LCA) of RGs and GWs on the basis of a systematic review of 25 peer-reviewed studies, adopting the ISO 14040/14044 standard. Data were taken for each life cycle stage construction, operation, maintenance, and end-of-life and normalized per square meter for a 50-year service life. The main environmental impact categories were Global Warming Potential (GWP100), fossil fuel consumption, water consumption, and solid waste generation. Re-CiPe 2016 method of impact assessment was used to ensure comparability between studies. The results show a balance between LCA phases. Green walls have lower construction-phase impacts (e.g., GWP: 0.58 kg CO₂ eq/m²) due to prefabricated modular units. Rain gardens, on the other hand, have lower operational-phase impacts (e.g., 419 vs. 796 kg CO₂ eq/m² per year), due to passive water filtering and minimal maintenance needs. RGs also outperformed in delivering ecosystem services such as storm water infiltration, groundwater recharge, and urban cooling. The outcome of this study reinforces that no GI system is supreme. Instead, performance is on lifecycle stage and conditions. Deciding on a choice should rely on local objectives energy performance, water efficiency, or biodiversity. The innovation lies in combining spatial-functional performance and ecosystem service valuation with conventional LCA indicators. This hybrid approach bridges the gap between environmental science and applied sustainability by providing a new decision-support system that increases the relevance of Life Cycle Assessment (LCA) for policymakers and urban planners.
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References
(2017) Global infrastructure outlook. Global Infrastructure Hub. https://cdn.gihub.org/umbraco/media/1652/20170913-ipfa-presentation-outlook-compass.pdf
Bigger P, Webber S (2021) Green structural adjustment in the world bank’s resilient city. Ann Am Assoc Geogr 111: 36-51. https://www.tandfonline.com/doi/full/10.1080/24694452.2020.1749023
Byrne DM, Grabowski MK, Benitez AC, Schmidt AR, Guest JS (2017) Evaluation of Life Cycle Assessment (LCA) for roadway drainage systems. Environ Sci Technol 51: 9261-9270. https://pubs.acs.org/doi/abs/10.1021/acs.est.7b01856
Chaffin BC, Shuster WD, Garmestani AS, Furio B, Albro SL, et al. (2016) A tale of two rain gar Ohio aldens: Barriers and bridges to adaptive management of urban stormwater in Cleveland, Ohio. J Environ Manage 183: 431-441. https://www.sciencedirect.com/science/article/abs/pii/S0301479716303644?via%3Dihub
Chatzimentor A, Apostolopoulou E, Mazaris AD (2020) A review of green infrastructure research in Europe: Challenges and opportunities. Landsc Urban Plann 198: 103775. https://www.sciencedirect.com/science/article/abs/pii/S0169204619303299
Chenani SB, Lehvävirta S, Häkkinen T (2015) Life cycle assessment of layers of green roofs. J Cleaner Prod 90: 153-162. https://www.sciencedirect.com/science/article/abs/pii/S0959652614012773
Dauda I, Alibaba HZ (2020) Green roof benefits, opportunities and challenges. Int J Civ Struct Eng Res 7: 106-112. https://ssu.mia.mybluehost.me/website_2af476cb/wp-content/uploads/2022/04/isaaiah.pdf
de Oliveira Santos TD, Pacheco FAL, Fernandes LFS (2024) A systematic analysis on the efficiency and sustainability of green facades and roofs. Sci Total Environ 173107. https://www.sciencedirect.com/science/article/pii/S0048969724032546?via%3Dihub
Ferrer ALC, Thomé AMT, Scavarda AJ (2018) Sustainable urban infrastructure: A review. Resour Conserv Recycl 128: 360-372. https://www.sciencedirect.com/science/article/abs/pii/S0921344916301914
Fletcher TD, Andrieu H, Hamel P (2013) Understanding, management and modelling of urban hydrology and its consequences for receiving waters: A state of the art. Adv Water Resour 51: 261-279. https://www.sciencedirect.com/science/article/abs/pii/S0309170812002412
(2018) Green roof guidelines - Guidelines for the planning, construction, and maintenance of green roofs. FLL Landscape Dev Landscap Res Soc. https://commons.bcit.ca/greenroof/files/2019/01/FLL_greenroofguidelines_2018.pdf
Flynn KM (2011) Evaluation of green infrastructure practices using life cycle assessment. https://www1.villanova.edu/content/dam/villanova/engineering/vcase/vusp/Flynn-THesis-11.pdf
Flynn KM, Traver RG (2013) Green infrastructure life cycle assessment: A bio-infiltration case study. Ecol Eng 55: 9-22. https://www.sciencedirect.com/science/article/abs/pii/S0925857413000190
Getter KL, Rowe DB, Robertson GP, Cregg BM, Andresen JA (2009) Carbon sequestration potential of extensive green roofs. Environ Sci Technol 43: 7564-7570. https://pubs.acs.org/doi/abs/10.1021/es901539x
Hengen TJ, Sieverding HL, Stone JJ (2016) Lifecycle assessment analysis of engineered stormwater control methods common to urban watersheds. J Water Resour Plan Manage 142: 04016016. https://ascelibrary.org/doi/abs/10.1061/(ASCE)WR.1943-5452.0000647
Ishimatsu K, Ito K, Mitani Y, Tanaka Y, Sugahara T, et al. (2017) Use of rain gardens for stormwater management in urban design and planning. Landsc Ecol Eng 13: 205-212. https://link.springer.com/article/10.1007/s11355-016-0309-3
Jennings AA, Adeel AA, Hopkins A, Litofsky AL, Wellstead SW (2013) Rain barrel-urban garden stormwater management performance. J Environ Eng 139: 757-765. https://ascelibrary.org/doi/abs/10.1061/(ASCE)EE.1943-7870.0000663
Kosareo L, Ries R (2007) Comparative environmental life cycle assessment of green roofs. Build Environ 42: 2606-2613. https://www.sciencedirect.com/science/article/abs/pii/S0360132306001648
Li Y, Huang Y, Ye Q, Zhang W, Meng F, et al. (2018) Multi-objective optimization integrated with life cycle assessment for rainwater harvesting systems. J Hydrol 558: 659-666. https://www.sciencedirect.com/science/article/abs/pii/S0022169418300830
Malaviya P, Sharma R, Sharma PK (2019) Rain gardens as stormwater management tool. Sust Green Technol Environ Manag 141-166. https://link.springer.com/chapter/10.1007/978-981-13-2772-8_7
Peng Y, Wang Y, Chen H, Wang L, Luo B, et al. (2024) Carbon reduction potential of a rain garden: A cradle-to-grave life cycle carbon footprint assessment. J Clean Prod 434: 139806. https://www.sciencedirect.com/science/article/abs/pii/S0959652623039641
Rasul MG, Arutla LKR (2020) Environmental impact assessment of green roofs using life cycle assessment. Energy Rep 6: 503-508. https://www.sciencedirect.com/science/article/pii/S2352484719305797
Ren ZM, Su DZ (2014) Comparison of different life cycle impact assessment software tools. Key Eng Mater 572: 44-49. https://www.scientific.net/KEM.572.44
Rowe DB (2011) Green roofs as a means of pollution abatement. Environ Pollut 159: 2100-2110. https://www.sciencedirect.com/science/article/abs/pii/S0269749110004859
Saiz S, Kennedy C, Bass B, Pressnail K (2006) Comparative life cycle assessment of standard and green roofs. Environ Sci Technol 40: 4312-4316. https://pubs.acs.org/doi/abs/10.1021/es0517522
Saqib A, Khan MSU, Rana IA (2024) Bridging nature and urbanity through Green roof Resilience Framework (GRF): A thematic review. Nature-Based Sol 6: 100182. https://www.sciencedirect.com/science/article/pii/S2772411524000739
Sebastian DE, Ganguly S, Krishnaswamy J, Duffy K, Nemani R, et al. (2019) Multi-scale association between vegetation growth and climate in India: A wavelet analysis approach. Remote Sens 11: 2703. https://www.mdpi.com/2072-4292/11/22/2703
Shafique M, Kim R, Kyung-Ho K (2018) Green roof for stormwater management in a highly urbanized area: The case of Seoul, Korea. Sustain 10: 584. https://www.mdpi.com/2071-1050/10/3/584
Shafique M, Kim R, Rafiq M (2018) Green roof benefits, opportunities and challenges-A review. Renew Sustain Energy Rev 90: 757-773. https://www.sciencedirect.com/science/article/abs/pii/S136403211830217X
Kumari D (2016) Green and blue roofs: A significant solution to urban environmental problems. Indian Geogr J 91: 20-34. https://mail.igschennai.org/IGJ/IGJ-Vol_91_2016-Special-Theme-Climatology.pdf#page=22
Sousa D, Small C, Spalton A, Kwarteng A (2019) Coupled spatiotemporal characterization of monsoon cloud cover and vegetation phenology. Remote Sens 11: 1203. https://www.mdpi.com/2072-4292/11/10/1203
Spatari S, Yu Z, Montalto FA (2011) Life cycle implications of urban green infrastructure. Environ Pollut 159: 2174-2179. https://www.sciencedirect.com/science/article/abs/pii/S0269749111000376?via%3Dihub
Stefanakis AI (2019) The role of constructed wetlands as green infrastructure for sustainable urban water management. Sustain 11: 6981. https://www.mdpi.com/2071-1050/11/24/6981
Suppakittpaisarn P, Jiang X, Sullivan WC (2017) Green infrastructure, green stormwater infrastructure, and human health: A review. Curr Landsc Ecol Rep 2: 96-110. https://link.springer.com/article/10.1007/s40823-017-0028-y
Trenta M, Quadri A, Sambuco B, Garcia CAP, Barbaresi A, et al. (2025) Green roof management in mediterranean climates: Evaluating the performance of native herbaceous plant species and green manure to increase sustainability. Build 15: 640. https://www.mdpi.com/2075-5309/15/4/640
(2018) World urbanization prospects: The 2018 revision. United Nations. https://population.un.org/wup/assets/WUP2018-Report.pdf
Wang R, Eckelman MJ, Zimmerman JB (2013) Consequential environmental and economic life cycle assessment of green and gray stormwater infrastructures for combined sewer systems. Environ Sci Technol 47: 11189-11198. https://pubs.acs.org/doi/10.1021/es4026547
Wang Y, Ni Z, Hu M, Li J, Wang Y, et al. (2020) Environmental performances and energy efficiencies of various urban green infrastructures: A life-cycle assessment. J Clean Prod 248: 119244. https://www.sciencedirect.com/science/article/abs/pii/S0959652619341149
Vineyard D, Ingwersen WW, Hawkins TR, Xue X, Demeke B (2015) Comparing green and grey infrastructure using life cycle cost and environmental impact: A rain garden case study in cincinnati, OH. J Am Water Resour Assoc 51: 1342-1360. https://onlinelibrary.wiley.com/doi/abs/10.1111/1752-1688.12320
Vaz ICM, Istchuk RN, Oneda TMS, Ghisi E (2023) Sustainable rainwater management and life cycle assessment: Challenges and perspectives. Sustain 15: 12133. https://www.mdpi.com/2071-1050/15/16/12133
William R, Gardoni P, Stillwell AS (2021) Predicting rain garden performance under back-to-back rainfall conditions using stochastic life-cycle analysis. Sust Resil Infra 6: 143-155. https://www.tandfonline.com/doi/abs/10.1080/23789689.2019.1660549
Salah GMJA, Romanova A (2021) Life cycle assessment of felt system living green wall: Cradle to grave case study. Environ Chall 3: 100046. https://www.sciencedirect.com/science/article/pii/S2667010021000251
Cosola VOD, Olivieri F, Ruiz-García L, Bacenetti J (2020) An environmental life cycle assessment of living wall systems. J Environ Manage 254: 109743. https://www.sciencedirect.com/science/article/abs/pii/S0301479719314616?via%3Dihub
Reyhani M, Santolini E, Tassinari P, Torreggiani D (2023) Environmental assessment of design choices of green walls based for materials combination and plants. Int J Life Cycle Assess 28: 1078-1091. https://link.springer.com/article/10.1007/s11367-023-02181-x
Ottelé M, Perini K, Fraaij ALA, Haas EM, Raiteri R (2011) Comparative life cycle analysis for green façades and living wall systems. Energy Build 43: 3419-3429. https://www.sciencedirect.com/science/article/abs/pii/S0378778811003987
Barreca F, Cardinali GD, Bruno R, Arcuri N (2024) Sustainability assessments of living walls in the mediterranean area. Build 14: 3222. https://www.mdpi.com/2075-5309/14/10/3222
Reyhani M, Santolini E, Michael RN, Barbaresi A, Tassinari P, et al. (2024) Environmental assessment of green wall: A comparison between Australia and Italy. Sci Total Environ 957: 177699. https://www.sciencedirect.com/science/article/pii/S0048969724078562?via%3Dihub
Liu M, Zhu C, Cui T, Zhang H, Zheng W, et al. (2018) An alternative algorithm of tunnel piston effect by replacing three-dimensional model with two-dimensional model. Build Environ 128: 55-67. https://www.sciencedirect.com/science/article/abs/pii/S0360132317305292
(2025) Using green roofs to reduce heat islands. U.S. Environmental Protection Agency. https://www.epa.gov/heatislands/using-green-roofs-reduce-heat-islands
