Gatuträdsbestånd med resiliens och vitalitet i framtidens städer : en studie av väderdata samt art- och släktesfördelning i Stockholm, Göteborg och Malmö

Abstract: This study covers Stockholm, Gothenburg and Malmö and is based on the hypothesis that springs are getting drier and that this has negatively affected the vitality of street trees. The study compiles and visualizes trends in rainfall distribution over the year, based on rainfall data and also maps species and genus distribution within the street tree population for each city. The purpose is, among other things, to create a basis for discussion for the development of the cities' future street tree populations. The result consists of diagrams showing rainfall distribution for each city on a seasonal basis, with lines indicating trends for each season. The study also consists of diagrams displaying the species and genus distribution within the cities' street tree populations. The graphs relating to rainfall do not show any clear trend in rainfall distribution indicating that we are moving towards drier springs. Further studies are required to determine if there are factors that can substantiate the hypothesis on which the study is based. As the data of which the mapping of street tree populations is based on varies in terms of extent and degree of detail, the importance of extensive inventories is taken up as an important tool in future work to improve the resilience of street street populations.