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The influence of vegetation on rain garden hydrological performance
Rain gardens are increasingly adopted in urban areas to mitigate urban stormwater impacts. They provide an opportunity to adopt taxonomically diverse plantings to enhance habitat and aesthetic value. However, few studies to date have quantified how rain garden hydrological performance is affected by vegetation type. In the present study, two vegetation types were considered: taxonomically diverse communities composed of forb-rich perennials; and mown grasses, as well as a bare soil control group. Detention effects were measured independently from retention. The forb-rich perennial mixes consistently provided the best hydrologic performance in terms of both stormwater retention and detention. The diverse perennial community showed up to 1.2 mm higher initial losses over the experimental catchment compared with mown grasses, and also offered 54% and 32% longer detention compared with bare soils and mown grasses, respectively. We therefore recommend prioritising taxonomically and structurally diverse planting for vegetated stormwater management facilities wherever possible.
The influence of vegetation on rain garden hydrological performance
Rain gardens are increasingly adopted in urban areas to mitigate urban stormwater impacts. They provide an opportunity to adopt taxonomically diverse plantings to enhance habitat and aesthetic value. However, few studies to date have quantified how rain garden hydrological performance is affected by vegetation type. In the present study, two vegetation types were considered: taxonomically diverse communities composed of forb-rich perennials; and mown grasses, as well as a bare soil control group. Detention effects were measured independently from retention. The forb-rich perennial mixes consistently provided the best hydrologic performance in terms of both stormwater retention and detention. The diverse perennial community showed up to 1.2 mm higher initial losses over the experimental catchment compared with mown grasses, and also offered 54% and 32% longer detention compared with bare soils and mown grasses, respectively. We therefore recommend prioritising taxonomically and structurally diverse planting for vegetated stormwater management facilities wherever possible.
The influence of vegetation on rain garden hydrological performance
Yuan, Jia (author) / Dunnett, Nigel / Stovin, Virginia
Urban water journal ; 14
2017
Article (Journal)
English
Catchment area , Rain , Management , Catchments , rain garden , Grasses , Water management , Planting , Retention , Hydrology , Vegetation , Gardens , Storm sewers , Urban areas , Stormwater management , Detention , Stormwater , hydrologic performance , vegetation , Atmospheric precipitations , retention , Vegetation type , Soils
The influence of vegetation on rain garden hydrological performance
| Taylor & Francis Verlag | 2017
RAIN GARDEN EVALUATION APPARATUS, AND RAIN GARDEN EVALUATION PROGRAM
| European Patent Office | 2024