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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Annals of operations research 54 (1994), S. 175-202 
    ISSN: 1572-9338
    Schlagwort(e): System dynamics ; forest development ; JEL C44 ; Q23
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Wirtschaftswissenschaften
    Notizen: Abstract Successful management and stewardship of environmental systems requires reliable assessment of their development dynamics in response to changing environmental and management conditions. Descriptive (statistical) models cannot cope with this challenge since their development is based on historical time series with little or no reference to actual system structure. On the other hand, explanatory (process) models attempt to capture the essential eco-physiological processes determining dynamic behavior, and they are therefore much better suited for the computation of development dynamics under changing conditions, even when long-term empirical observations are not possible or feasible. As an example of the use of process models in environmental systems analysis, a forest simulation model describing growth, and carbon and nitrogen dynamics of a single-species, even-aged forest stand under silvicultural management and pollution influences is presented, together with some representative simulation results. Steps in obtaining valid but compact tree models for complex forest simulations are outlined, and recent software developments (object-oriented programming) are assessed with respect to their potential for environmental systems analysis.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    GeoJournal 17 (1988), S. 279-287 
    ISSN: 1572-9893
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geographie
    Notizen: Abstract Systems analysis of the responses of forest trees to air pollutants led to mathematical models which represent the essential life processes of mature trees (photosynthesis, respiration, growth etc.) under ‘normal’ conditions and — especially — under pollution strees. Computer simulations using these models have made it possible to test and analyse the consequences of — known or hypothetical — pollution effects. The simulation runs have led to the identification of three distinct behavioural modes (growth, stagnation, breakdown) and corresponding stable and unstable system states. The results have produced new insights and contributed to the understanding of the dieback process of spruce and beech trees. The presentation will concentrate on the most recent and most complex of the hitherto existing models, theBeech model.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Environmental modeling and assessment 1 (1996), S. 193-218 
    ISSN: 1573-2967
    Schlagwort(e): Sustainable development ; viability ; indicators ; orientors ; ethics ; future discount ; assessment
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract Assessments of current and future development paths require comprehensive sets of indicators covering all essential aspects. From a holistic systems point of view, most currently proposed indicator sets are incomplete and deficient. Assessments of sustainable development require a full representation of the satisfaction states of the “basic orientors” (=fundamental interests) of constituent sector systems, and of their contribution to basic orientor satisfaction of the total system. Basic orientors are value dimensions (existence, effectiveness, freedom of action, security, adaptability, coexistence) emerging from a self-organizing system's interaction with its environment, and its fundamental properties (normal environmental state, scarce resources, variety, variability, change, other systems). Basic orientors are also reflected in human emotions, societal punishment, psychological and social needs, life styles, and values emerging in self-organization of artificial life. The relative weight assigned to basic orientors of partner systems is a question of ethics. Based on these concepts, a general scheme for finding a “complete” set of indicators of viability and sustainability is derived, and it is applied to deriving a comprehensive set of indicators of sustainable development for society and its sector systems (infrastructure, economic system, social system, individual development, government, environment and resource system). The method can be applied at different levels of complexity and regional resolution. A full set of regional indicators for sustainable development is presented, a method for compact assessment of development paths using orientor stars is described, and the approach for application at the community level is outlined.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Buch
    Buch
    Norderstedt :Books on Demand,
    Titel: Systeme, Dynamik, Simulation /
    Autor: Bossel, Hartmut
    Verlag: Norderstedt :Books on Demand,
    Erscheinungsjahr: 2004
    Seiten: 400 S. : , graph. Darst. ; , 170 mm x 220 mm
    ISBN: 3-8334-0984-3
    Materialart: Buch
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Buch
    Buch
    Norderstedt :Books on Demand,
    Titel: Elementarsysteme, Technik und Physik /; 1
    Autor: Bossel, Hartmut
    Verlag: Norderstedt :Books on Demand,
    Erscheinungsjahr: 2007
    Seiten: 208 S.
    Serie: Systemzoo 1
    Materialart: Buch
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Buch
    Buch
    Norderstedt :Books on Demand,
    Titel: Klima, Ökosysteme und Ressourcen /
    Autor: Bossel, Hartmut
    Verlag: Norderstedt :Books on Demand,
    Erscheinungsjahr: 2004
    Seiten: 236 S.
    Serie: Systemzoo
    Materialart: Buch
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Buch
    Buch
    Norderstedt :Books on Demand,
    Titel: Wirtschaft, Gesellschaft und Entwicklung /; 3
    Autor: Bossel, Hartmut
    Verlag: Norderstedt :Books on Demand,
    Erscheinungsjahr: 2004
    Seiten: 308 S.
    Serie: Systemzoo 3
    Materialart: Buch
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Buch
    Buch
    Norderstedt :Books on Demand
    Titel: Systemzoo /
    Autor: Bossel, Hartmut
    Verlag: Norderstedt :Books on Demand
    Materialart: Buch
    Sprache: Deutsch
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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