Multifunktionella dagvattendammar - Utformningens möjligheter och begränsningar
Sammanfattning: In recent years, stormwater ponds have become a common feature in urban environments to manage an increasing amount of stormwater caused by densification of cities combined with increased precipitation due to climate changes. Stormwater ponds can be multifunctional, by providing several ecosystem services and functions as water purification, recreation and habitats for biodiversity in addition to stormwater retention. However, in order to maintain their functions and ensure that management efforts are not wasted, it is crucial to know which factors influence the ecosystem function of the ponds. The aim of this study was to investigate which factors determine the functioning of stormwater ponds and how ponds should be designed in order to fulfil their purpose for storm water retention, water purification or as a habitat for biodiversity. The study was carried out as a literature review. The results of the literature review was applied to three stormwater ponds in the city of Lund, Sweden, in order to determine their ability to fulfil their purpose and their potential to become multifunctional. The result of this study shows that pond size and shape, inlet and outlet configuration, depth, vegetation abundance and nutrient and pollution load are important factors influencing the ecosystem functioning of ponds. Also, the result shows that one of the investigated ponds in Lund has good potential of becoming multifunctional due to its rectangular shape, large distance between inlets and outlets, sufficient depth and its proximity to terrestrial habitats. This study highlights factors affecting the function of ponds with different purposes and the importance of taking these factors into account in planning, construction and management efforts, if the objective is to obtain a multifunctional pond.
HÄR KAN DU HÄMTA UPPSATSEN I FULLTEXT. (följ länken till nästa sida)