Halvtidsseminarium med Zhicong Xie, doktorand vid institutionen för biologi och miljövetenskap
Fokus för Zhicongs doktorandprojekt är hur träd, både i skogar och i städer, påverkas av klimat stress, se mer nedan.
Opponent vid seminariet är Håkan Pleijel, och examinator Henrik Aronsson, båda från institutionen för biologi och miljövetenskap. Zhicongs huvudhandledare Annemieke Gärdenäs (BioEnv) med Lasse Tarvainen (BioEnv), Deliang Chen (Inst för geovetenskaper, GU) samt Wenxin Zhang (School of Geographical & Earth Sciences, University of Glasgow, UK) som bihandledare.
Kort sammanfattning (på engelska):
This seminar will mainly focus on tree-ring analysis and modelling plans within Zhicong’s doctoral project, which investigates how extreme weather affects trees in forest and urban environments. The work combines available datasets with new measurements, including tree rings from the Skogaby forest site and urban environmental data such as soil temperature and moisture, to improve understanding of tree growth, carbon uptake, and water relations under climate stress. Using the process-based ecosystem model CoupModel, the project examines plant–water interactions, carbon–water relationships, and their coupling to nutrient dynamics based on the Skogaby drought and irrigation experiments. The project also includes upscaling with LPJ-GUESS to test whether the responses observed at Skogaby can be reproduced across larger spatial and temporal scales, and to assess ecosystem responses to future extremes such as severe drought and compound heatwaves. The developed model will also be applied to urban trees in Gothenburg to study present and future impacts of drought, heatwaves, and flooding under contrasting site conditions.