TY - JOUR
T1 - The benefits of an eco-productive green roof in Bogota, Colombia
AU - Galarza-Molina, Sandra
AU - Torres, Andrés
AU - Rengifo, Pervys
AU - Puentes, Angela
AU - Cárcamo-Hernández, Eliana
AU - Méndez-Fajardo, Sandra
AU - Devia, Carlos
N1 - Publisher Copyright:
© International Society of the Built Environment.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - In peri-urban areas of Bogota, people harvest and use untreated rainwater. Initial research indicates that water collected from roofs contains high turbidity values, as well as high concentrations of total suspended solids, biochemical oxygen demand 5-Day and heavy metals. Moreover, these areas do not generally have access to public sewer systems. An eco-productive green roof with the aim of reducing poverty and improving the quality of life of the communities located peri-urban areas of Bogota has been described and examined. These eco-roofs are made with cheaply attainable materials (e.g. recycled plastic bottles). The aim of this study was to understand the hydrological benefits of this type of green roof. We built an experimental set-up consisted of six independent eco-roof modules planted with different crop plant species and a reference roof to serve as a control. The results obtained showed that the crop type had significant influence over the results of both hydrological behaviour and pollutant concentrations measured on the runoff from roofs. The eco-roof can retain up to 65% of the runoff volume and can reduce the runoff peak up to 80%; the eco-roof helped in retaining high concentrations of zinc. The results obtained represent a meaningful positive impact for the eco-roofs tested for stormwater harvesting and suggest that these systems could offer hydrological benefits that might help re-establish hydrological values for marginal urban areas.
AB - In peri-urban areas of Bogota, people harvest and use untreated rainwater. Initial research indicates that water collected from roofs contains high turbidity values, as well as high concentrations of total suspended solids, biochemical oxygen demand 5-Day and heavy metals. Moreover, these areas do not generally have access to public sewer systems. An eco-productive green roof with the aim of reducing poverty and improving the quality of life of the communities located peri-urban areas of Bogota has been described and examined. These eco-roofs are made with cheaply attainable materials (e.g. recycled plastic bottles). The aim of this study was to understand the hydrological benefits of this type of green roof. We built an experimental set-up consisted of six independent eco-roof modules planted with different crop plant species and a reference roof to serve as a control. The results obtained showed that the crop type had significant influence over the results of both hydrological behaviour and pollutant concentrations measured on the runoff from roofs. The eco-roof can retain up to 65% of the runoff volume and can reduce the runoff peak up to 80%; the eco-roof helped in retaining high concentrations of zinc. The results obtained represent a meaningful positive impact for the eco-roofs tested for stormwater harvesting and suggest that these systems could offer hydrological benefits that might help re-establish hydrological values for marginal urban areas.
KW - Eco-roofs
KW - Food production
KW - Food security
KW - Green roofs
KW - Sustainable urban drainage systems
UR - http://www.scopus.com/inward/record.url?scp=85029511855&partnerID=8YFLogxK
U2 - 10.1177/1420326X16665896
DO - 10.1177/1420326X16665896
M3 - Article
AN - SCOPUS:85029511855
SN - 1420-326X
VL - 26
SP - 1135
EP - 1143
JO - Indoor and Built Environment
JF - Indoor and Built Environment
IS - 8
ER -
