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Kvantitativ kartläggning av ekosystemtjänsten dagvatten- och flödesreglering: i Stockholms innerstad med verktyget ArcGIS
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
2018 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Quantitative mapping of the ecosystem service Stormwater treatment and Flow regulation : in the city of Stockholm using the tool ArcGIS (English)
Abstract [sv]

Till följd av klimatförändringar förväntas mer intensiva nederbördsmönster i framtiden. Dagvattenhantering är en essentiell del i urbana miljöer för att motverka översvämningar vid stora vattenflöden. Grön infrastruktur bidrar till dagvattenhanteringen genom dess ekosystemtjänst dagvatten- och flödesreglering. I uppsatsen undersöks ekosystemtjänstens kvantitativa potential att fånga upp vatten under ett 10-årsregn med varaktigheten en timme, med syftet att få en approximativ bild av grön infrastrukturs potentiella bidrag till dagvattenhanteringen i Stockholms innerstad. Studien är baserad på beräkningar i ArcGIS genom att försöka kvantifiera den gröna infrastrukturens bidragande parametrar till ekosystemtjänsten dagvatten- och flödesreglering. Resultatet av studien visade att dagens gröna infrastruktur har potential att ta hand om 26 % av ett 10-årsregn med varaktighet en timme, motsvarande siffra för nederbördsprojektioner för ett 10-årsregn år 2100 var 21 %. Uppsatsen redogör även för klimatförändringarnas påverkan på ekosystemtjänsten.

Abstract [en]

As a consequence of global warming, future precipitation patterns are predicted to be more intense. Thus, stormwater treatment plays an essential role in the urban environment to prevent flooding. Green infrastructure contributes to the treatment of stormwater through its ecosystem service “Stormwater treatment and flow regulation”. The objective of this study was to quantify the capacity of this ecosystem service by the use of Geographical Information Systems (GIS) for a precipitation event with a return period of 10 years and a duration of one hour. The aim was to get an estimation of the potential contribution by green infrastructure to the capacity of stormwater treatment in the inner city of Stockholm. The result of the study was a potential capacity of 26 % of a precipitation event with a return period of 10 years and a duration of one hour. Future predictions of that same precipitation event in the year of 2100 resulted in a capacity of 21%. The thesis also presents the predicted consequences of climate change to the ecosystem service.

Place, publisher, year, edition, pages
2018. , p. 40
Series
TRITA-ABE-MBT ; 18176
Keywords [en]
Green infrastrucuture, ecosystem services, urbanization, precipitation, stormwater management, ArcGIS
Keywords [sv]
Grön infrastruktur, ekosystemtjänster, urbanisering, nederbörd, dagvattenhantering, ArcGIS
National Category
Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-229850OAI: oai:DiVA.org:kth-229850DiVA, id: diva2:1214866
Educational program
Master of Science in Engineering - Energy and Environment
Supervisors
Examiners
Available from: 2018-08-09 Created: 2018-06-07 Last updated: 2018-08-09Bibliographically approved

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