Hydrological and water quality performance of newly constructed bioretention mesocosms
Date
2020-09-24
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Abstract
To examine the effects of growing media, vegetation and other potential influential factors (including event magnitude, and media temperature and moisture) on bioretention performance, 24 bioretention mesocosms were constructed using three types of growing media and planted with three types of vegetation in 2017. As a part of the research project, this thesis used the field observations in 2018 to assess their hydrological and water quality performance and to identify the primary influential factors on bioretention performance in the first year of their operation. A series of 25 simulated events (of different magnitudes) were performed between June and October of 2018. On average, the mesocosms retained 16% of inflow while significant chemical leaching from all mesocosms was observed. Among the potential influential factors, the event magnitude and growing media were identified to be the most dominant factor affecting the hydrological and water quality performance of the bioretention mesocosms, respectively. Among the three types of growing media, the clay-loam (mixed with woodchips) media had lower water retention rate but leached less compared to other two types of growing media.
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Keywords
bioretention system, nutrient leaching, Influential factors, early stage
Citation
Li, X. (2020). Hydrological and water quality performance of newly constructed bioretention mesocosms (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.