Disputationen sker virtuellt med hjälp av mjukvaran Zoom via följande länk:

https://stockholmuniversity.zoom.us/j/268491560

Se nedan för mer information om Zoom samt för alternativa sätt att följa disputationen.

Avhandlingens titel

Land Use Conflicts between Agriculture and Energy Production

Systems Approaches to Allocate Potentials for Bioenergy and Agrophotovoltaics

Länk till Diva

Avhandlingen som pdf

Respondent

Daniel Ketzer

Handledare

Ingrid Stjernquist and Peter Schlyter

Opponent

Docent Henrik Ny, Blekinge Tekniska Högskola

Abstract

The developments towards a bio-based economy and a renewable energy-based power supply require thorough assessments of feedstocks and frameworks. In the past, political targets for increasing shares of renewable energies for combatting climate change have triggered direct land use changes (LUCs) and even indirect land use changes (iLUCs). As a consequence, residues from grassland and agriculture, which are not used for other purposes, got into the focus of renewable energy policies. Despite the technical feasibility, a general approach for assessing  amounts of residues has been lacking, making planning processes for bioenergy highly customized. This study introduces a general, uniform modeling-approach based on Geographic Information Systems (GIS) and publicly available statistical and map data to locate potentials on a 1 km-grid throughout the European Union (EU). Sustainable potentials were calculated for five model regions in Northwest Europe considering input data such as animal livestock, regional (elevation-dependent) yield data, protection areas, and residue-to-crop ratios. Framing two scenarios, the model results were fed into a Decision Support Tool (DST) as a planning tool for bioenergy. Agricultural residues and surplus grass may provide significant potentials on regional levels, e.g. up to 52,236 TJ/ a from straw and 1,301 TJ/ a from root crop residues in Northrhine-Westphalia, or 9,141 TJ/ a from oil plant residues in Île de France, and 12,226 TJ of surplus grass in Rhineland-Palatinate.

At the same time, ground mounted PV-systems were installed on arable land formerly used for food or feed production. Hence, high quality soils were taken out of agricultural production. For addressing this type of conflict, Agrophotovoltaic (APV) systems combine agricultural biomass and solar power production on the same site and time for increasing area use efficiency. Even though APV might prove suitable in the technical sense, it might be rejected by society i.e. due to its landscape impact. The Responsible Research and Innovation (RRI)-concept was applied for APV by involving stakeholders already in the technology development process. In a series of workshops with citizens and experts, a comprehensive analysis of the driving and restraining forces for APV was done. A System Dynamics approach with Causal Loop Diagrams (CLD) visualizes and reveals the internal and external dynamics of the APV-technology. Stakeholders have pointed out the importance of defining a good framework for APV first, i.e. roof and industrial areas for PV system shall be exploited first. Any change in the set-up for the PV-system impacts the conditions for the agricultural cultivation conditions, i.e. the height and width of the mounting system influences the working conditions and distribution of water. The shading of the plants can increase the yields in dry and hot summers, while it may lead to yield reductions in other years. The acceptance level is driven by regional aspects such as tourism, local recreation and landscape impact. In this way, local knowledge from participatory studies is seen as prerequisite for a legitimate framework.

Följ disputationen via länk

Mötet hålls med Zoom som du laddar ner till din dator eller mobil på www.zoom.us och därefter går du in på mötet genom att klicka på länken nedan. 

Observera att det tar en stund att installera Zoom och att du förmodligen behöver klicka på möteslänken igen efter installation. Gör därför detta i god tid före mötets början. Klicka sedan på möteslänken och "Join with Computer Audio."

Du kan även följa disputationen utan att ladda ned Zoom-applikationen. Välj då avbryt och följ den finstilta länken "Join from your browser" längst ner på dialogsidan, och ange möteslänken. Om inte länken fungerar med din vanliga webbläsare, pröva att öppna den i en annan webbläsare, t.ex. Chrome.

Du kan också följa mötet genom att ringa in till mötet med en mobiltelefon eller med Skype, se nedan för telefonnummer.

Vill du ha fler instruktioner för hur man ansluter sig till ett zoom-möte läs vidare här:
https://support.zoom.us/hc/en-us/articles/201362193-How-Do-I-Join-A-Meeting-

För att som åhörare kunna yttra sig vid disputationen så ska man klicka på "Raise Hand", dvs räcka upp handen. Detta kommer att vara möjligt vid slutet av akten. Ingen åhörare kommer att använda ljud eller video, chat eller filskick utan att mötesledaren godkänner detta.

Du kan ansluta till mötets väntrum redan 12.30 via länken, men disputationen börjar kl. 13.00.

Länk till disputationen

Join Zoom Meeting

https://stockholmuniversity.zoom.us/j/268491560

Meeting ID: 268 491 560

Topic: Daniel Ketzer dissertation

Time: Apr 24, 2020 13:00 PM Amsterdam, Berlin, Rome, Stockholm, Vienna

Alternative ways to follow the dissertation, see below

One tap mobile

+46844682488,,268491560# Sweden

+46850500828,,268491560# Sweden

Dial by your location

        +46 8 4468 2488 Sweden

        +46 8 5050 0828 Sweden

        +46 8 5050 0829 Sweden

        +46 8 5052 0017 Sweden

        +46 850 539 728 Sweden

        +45 32 70 12 06 Denmark

        +45 32 71 31 57 Denmark

        +45 32 72 80 10 Denmark

        +45 32 72 80 11 Denmark

        +45 89 88 37 88 Denmark

        +47 2396 0588 Norway

        +47 7349 4877 Norway

        +358 3 4109 2129 Finland

        +358 9 4245 1488 Finland

        +1 253 215 8782 US

        +1 301 715 8592 US

        +1 312 626 6799 US (Chicago)

        +1 346 248 7799 US (Houston)

        +1 408 638 0968 US (San Jose)

        +1 408 652 8184 US (San Jose)

        +1 646 876 9923 US (New York)

        +1 669 900 6833 US (San Jose)

Meeting ID: 268 491 560

Find your local number: https://stockholmuniversity.zoom.us/u/cbyBFEPSiG

Join by SIP

268491560@109.105.112.236

268491560@109.105.112.235

Join by H.323

109.105.112.236

109.105.112.235

Meeting ID: 268 491 560

Join by Skype for Business

https://stockholmuniversity.zoom.us/skype/268491560