Evidence details

rebecca.killalea@canberra.edu.au on 16 Mar 2022

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Citation: Hou, L., Yang, H., & Li, M. (2013). Removal of chemical oxygen demand and dissolved nutrients by a sunken lawn infiltration system during intermittent storm events. Water Science and Technology.
Study description: This study examined the effectiveness of sunken lawn infiltration systems in removing nutrients and COD from stormwater. The study used infiltration columns to assess the effectiveness of two lawn species (Poa pratensis and Lolium perenne) with a control of soil only.

Cause term/trajectory: Plants (riparian)
Cause description: Sunken lawn infiltration systems planted with two species (Poa pratensis and Lolium perenne)
Effect term/trajectory: Water quality - nutrients (nitrogen) (Decrease)
Effect description: The effluent from the two planted systems had a higher removal efficiency of nitrogen than the soil only treatment system. The removal efficiency of Poa pratensis was 74.04+/-17.67%, Lolium perenne was 59.24+/-15.84% and soil only was 20.56+-14.74%. The nitrogen removal was suggested to be due to nitrification and denitrification.
Response measure type: Mean difference

Source data: Laboratory
Study type: Manipulation
Study design: Control/reference vs. treatment/impact (no before)
Number of independent control or reference sampling units: 1
Number of indendent impact or treatment sampling units: 1 control, 2 treatments
Sample size used in analysis: 27
Design description: 3 experimental columns used for the control and 2 treatments. Each storm cycle was repeated 9 times.