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Dissertation
Design, implementation and application of a generic framework for integrated regional land-use modeling
(2008-02-19)
Land use is a crucial link between human activities and the natural environment and one of the main driving forces of global environmental change. Large parts of the terrestrial land surface are used for agriculture, forestry, settlements and infrastructure. Given the importance of land use, it is essential to understand the multitude of influential factors and resulting land use patterns. An essential methodology to study and quantify such interactions is provided by the adoption of land-use models. By the application ...
Dissertation
Unsicherheitsfaktor globale Landbedeckung: Konsequenzen für die Landsystemmodellierung
(2022-01)
Änderungen im Landsystem sind eine zentrale anthropogene Ursache globaler Klima- und Umweltveränderungen. Der stetig wachsende Bedarf an landwirtschaftlichen Flächen für Nahrung, Futter, Fasern und Energie und die damit verbundene Konversion natürlicher Ökosysteme gelten als wesentliche Triebkräfte der Landänderungen. Globale räumlich-explizite Landsystemmodelle tragen dazu bei, ein besseres wissenschaftliches Verständnis für derartige Landänderungsprozesse zu erlangen und zukünftige Entwicklungen mit Szenarien zu ...
Dissertation
Sustainable alternative water supply systems
(2023)
Freshwater is a critical resource which is intrinsically limited (only about 0.8% of Earth’s water is accessible freshwater) and chronically scarce. Therefore, given the rapidly dwindling supply and unceasing demand that multiplicatively exacerbates global freshwater scarcity, achieving water supply security has become a principal requirement and an endeavour for humankind. Water scarcity is considered a long-term threat to life on Earth; thus, alternatives are sought within the inherently limited options. To that ...
Dissertation
The timber footprint of the German bioeconomy
(2024)
More than ever before, global forests are expected to provide solutions to the increasingly common problems associated with human overexploitation of the planet. Forests are expected to function as carbon sinks, provide materials and food, serve as habitats for a significant portion of global terrestrial biodiversity, and be accessible to humans as recreational areas. Given these challenges, it is necessary to monitor global wood use and forest potential in order to derive clear sustainability limits and to plan ...
Dissertation
CO₂ as Carbon Source
(2022-04)
This thesis examines several aspects of the use of CO₂ as a carbon source for the chemical industry in Germany. The analysis focuses on the usage potential for CO₂ in the chemical and plastics industries, the current and future competitiveness for the production of CO₂ based chemicals in Germany and the characteristics of a CO₂ based value chain for polymer products. To investigate the different aspects, multiple methods of system analysis are applied, which investigate environmental and economic aspects of CO₂-based ...
Dissertation
A Modeling Analysis of Changing Global Land Use as affected by Changing Demands for Wood Products
(2010-01-08)
The 21st century has brought new challenges for forest management at a time when globalization in world trade is increasing and global climate change is becoming increasingly apparent. In addition to various goods and services like food, feed, timber or biofuels being provided to humans, forest ecosystems are a large store of terrestrial carbon and account for a major part of the carbon exchange between the atmosphere and the land surface. Depending on the stage of the ecosystems and/or management regimes, forests ...
Dissertation
Advancement of the water footprint of Products and Regions in Concept, Operationalisation and Consideration of Spatially Explicit Water Availability
(2024)
The supply of clean freshwater already poses challenges to some regions of the world and this situation is expected to worsen in the future. Improving water security is considered one of the major tasks of the 21st century. The Water Footprint (WF), used as umbrella term for established approaches, can contribute to this by correlating physical water use and water pollution with regional water availability and thus highlighting overuse. In order to derive directionally sound and meaningful recommendations for action, ...