Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate

Houdeshel, C. Dasch; Johnson, Nancy Collins; Pomeroy, Christine

doi:10.1016/j.landurbplan.2014.11.008

Cited by 54 publications

(22 citation statements)

References 49 publications

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“…Thus, it is of great importance to understand the hydrological perform of green roofs and develop and exhaustively test models that can be used to analyze and design their constituents in order to minimize water requirements. In particular, the simulation of (1) surface/subsurface processes and (2) the continuous dynamics of the soil water content controlled by evapotranspiration and irrigation are essential to study the performance of green infrastructure and evaluate plant survival and the overall sustainability of drainage techniques in arid and semiarid regions [11,12].…”

Section: Introductionmentioning

confidence: 99%

Using a Hydrological Model to Simulate the Performance and Estimate the Runoff Coefficient of Green Roofs in Semiarid Climates

Herrera

Flamant

Gironás

et al. 2018

Water

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Green roofs offer a series of benefits to buildings and to the urban environment. Their use in dry climates requires optimizing the choice of their components (i.e., vegetation, substrate and drainage layer) for the specific local climatic conditions, in order to minimize irrigations needs while preserving the attributes of the roof. In this study, we calibrated and validated an existing hydrological model-IHMORS-for the simulation of the hydrological performance of green roofs. Simulated results were compared to experimental data obtained in an outdoor test facility on several green roof specimens, representing a variety of green roofs configurations. IHMORS was able to reasonably predict the soil moisture dynamics for all tested specimens. The specimens of 10 cm depth were the best simulated by the model, while some overestimation was observed during the model validation for the 5 and 20 cm depth specimens. The model was then used to estimate the number of days in which irrigation is needed, as well as analyze the water runoff control performance of all specimens. We related the amount of water retained by the substrate and depth, magnitude and intensity of precipitation event, and the initial substrate moisture. For all events, the lowest runoff coefficient was simulated for the 20 cm specimens. Our study showed the full potential of the model for estimating the water needs and the runoff control performances of different variants of green roofs.

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Section: Introductionmentioning

confidence: 99%

Using a Hydrological Model to Simulate the Performance and Estimate the Runoff Coefficient of Green Roofs in Semiarid Climates

Herrera

Flamant

Gironás

et al. 2018

Water

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“…Bioretention is a 'planted depression', such as a rain garden, method to infiltrate rain water runoff [4]. The physical and chemical effects of this facility, such as reducing peak flow by infiltrating storm water runoff and removing nonpoint pollutants in rainfall, were successfully demonstrated in many studies [6][7][8][9][10][11][12]. Furthermore, bio-retention is considered as one of the most effective Low Impact Development facilities from aesthetical, ecological, and economic perspectives, because bio-retention serves as urban green spaces that improve urban landscape values and are known for low cost installations and easy maintenance [13].…”

Section: Introductionmentioning

confidence: 99%

Exploring Psychological and Aesthetic Approaches of Bio-Retention Facilities in the Urban Open Space

Kim

2017

Sustainability

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Over the last decades, a number of bio-retention facilities have been installed in urban areas for flood control and green amenity purposes. As urban amenity facilities for citizens, bio-retentions have a lot potential; however, the literature on bio-retentions focused mostly on physiochemical aspects like water quality and runoffs. Hence, this paper aims to explore psychological aspects of bio-retentions such as perceptions and landscape aesthetic value for visitors. In order to achieve this purpose, the study employed on-site interviews and questionnaires in the chosen three case studies as research methodology. For the 3 different locations of bio-retention facilities, interviews and questionnaires were carried out. The surveys of 100 bio-retention users were conducted, investigating their general perceptions and landscape aesthetics of the bio-retention facilities. The paper found that only 34% of the interviewees recognised bio-detention facilities, illustrating that most visitors were not aware of such facilities and were unable to distinguish the differences between bio-retention and conventional gardens. On the other hand, the majority of interviewees strongly supported the concept and function of bio-retentions, especially those who recognised the differences in planting species with conventional urban open spaces. Such main findings also encourage further studies of seeking quantitative values by conducting a correlation analysis between the functions and aesthetics of bio-retention facilities.

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“…Influent T-P concentrations at GHS and ECP with drainage area having greater than 90% impervious surface were lower than the influent T-P concentration at GLA with 36% impervious surface of drainage area. Previous bioretention field studies found phosphorus concentration removal of 50% to 94% and phosphorus mass reduction of 44% to 90% [7,37,[49][50][51]. However, these results were obtained from new cells and probably do not reflect long-term performance.…”

Section: Stormwater Monitoringmentioning

confidence: 83%

Phosphorus Retention by Fly Ash Amended Filter Media in Aged Bioretention Cells

Kandel

Vogel

Penn

et al. 2017

Water

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Bioretention cells (BRCs) have shown potential for storm water quantity and quality control. However, the phosphorus (P) removal in BRC has been variable due to differences of soil properties in filter media. The objectives of this research were to identify and evaluate P accumulation in filter media and to quantify effluent P reduction in BRC. Each cell has a sand and fly ash media designed to remove phosphorous. Filter media were collected in 2014 across the cell surface and to a depth of 0.6 m to quantify the P accumulation. The mean total P (T-P) concentration increased over the seven years of operation, but the changes were not statistically significant. The average Mehlich-3 P (M3-P) and water-soluble P (WS-P) concentrations in the media profiles showed higher P accumulation in the top 0.15 m. The average M3-P and WS-P concentrations between 0.15 m to 0.30 m, and 0.30 m to 0.60 m were variable on all four BRCs media. The media with 5% fly ash significantly retained M3-P and WS-P over the top 0.15 m. Stormwater influent and effluent samples from three of the BRCs monitored over one year showed reductions in both P concentration (68% to 75%) and P mass (76% to 93%).

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Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate

Cited by 54 publications

References 49 publications

Using a Hydrological Model to Simulate the Performance and Estimate the Runoff Coefficient of Green Roofs in Semiarid Climates

Using a Hydrological Model to Simulate the Performance and Estimate the Runoff Coefficient of Green Roofs in Semiarid Climates

Exploring Psychological and Aesthetic Approaches of Bio-Retention Facilities in the Urban Open Space

Phosphorus Retention by Fly Ash Amended Filter Media in Aged Bioretention Cells

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