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W. Ripl

Control of Watercycle- and matter-flow by Vegetation, approaches for a sustainable Ressourcemanagement. W. Ripl. Attenuation of an energy-pulse to the mean. Nature as a dynamic energy- dissipative process. Structures and distributes processes by means of the dynamic medium water in landscape

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W. Ripl

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  1. Control of Watercycle- and matter-flow by Vegetation, approaches for a sustainable Ressourcemanagement W. Ripl

  2. Attenuation of an energy-pulse to the mean

  3. Nature as a dynamic energy- dissipative process • Structures and distributes processes by means of the dynamic medium water in landscape • It controlles the atmosphere with respect to its process dynamics,composition und distribution • It controlles mechanical and chemical processes close to the soil surface and distributes thereby organisms, it eliminates randomness, minimises material flows, and increases sustainable development • It controlles temperature- and moisture patterns in space and time as a niche for all organisms

  4. Processor properties of water

  5. Dissipative Ecological Unit (DEU)

  6. Postglacial development of Lake Trummen (Sweden). Yearly deposition according to G. Digerfeldt (1972) loss on ignition extr. Ca total P extr. Mg extr. K years b.p. zone g/m2 year g/m2 year g/m2 year mg/m2 year mg/m2 year 10.000

  7. Efficiency and selfoptimization in nature (ETR-concept) • Dissipative structures are the optimized materialized answers to energetic interaction problems far from thermodynamic equilibrium • The efficiency criteria (closed localized material cycles related to irreversible linear material flow) determines sustainability of dissipative structures • Periodically moving water in nature, metabolizing cells, reproducing organisms, coenotic structures competing for sustainability and selfoptimizing ecosystems are dissipative structures in different fractal organization levels

  8. Thesis 1Nature is under stable conditions with respect to space and pulsed energy a recursive selforganisation process, • a steady development of sustainable dissipative structures such as organisms in interaction with their environment is the result.

  9. Thesis 2Process distribution and -coupling in space and time determines the “irreversible” material flows to the sea and thereby sustainability and the ageing of the landscape

  10. Thesis 3Material flows were dramatically increased by men induced interference with the energy flow, the watercycle and the vegetation. • Material flows in nature consist of chargeflows in rivers and groundewater, emissions, immissions and erosion

  11. Thesis 4The quality of the necessary functions of nature can be estimated by the spatial distribution of evaporable water in the landscape observed in the temperature distribution at the land surface. The quality of ecological functions can be measured by satellite imagery on the one hand, on the other hand by the distribution of runoff and the material flow from the catchments measured as waterflow and irreversible charge flow.

  12. Thesis 5The vegetation cover in feedback with the watercycle is the most important energy processor in the landscape

  13. Comparison Virgin forest and small meadow nearby

  14. Theoretical basis for thermal efficiency

  15. Irreversible matter losses by precipitation and run-off in different landscape types

  16. Development and Desertification of Landscape after glaciation had ceasedWater cycle, matter budget and temperature balance

  17. ETR an ecological concept based on the energetics of water • Water in interaction with solid surface leads to sorting processes according to energetic dissipative properties (particle size, dissolution equilibria) • stagnant water leads to conservation of structures (achievement of equilibrium) • high and random water dynamics at liquid-solid interfaces lead to erosion of structures (increased mechanical and chemical interactions) • optimized dissipative structures are dynamic metabolizing structures at lowest energy flow density

  18. The dissipative water cycle

  19. Indicators for sustainable and non-sustainable water cycles and landscapes losses losses

  20. Climatic function dry field – wetland( Pokorny 2001)

  21. 1200 ha Biodynamic farm Brodowin

  22. Brodowin RGB Composit July 1989 TM5

  23. Brodowin July 1989 Kanal 6 TM5

  24. Present environmental politics: regulation by threshold values

  25. Future target related regulation (holistic approach)

  26. What are Natures ecological services for a sustainable society? • The dissipative water cycle, evaporation and precipitation and its thermostatic function in the catchments • The atmosphere in its composition, its distribution and its dynamics • Soil fertility at dynamic conditions. Soil as the dynamic interface between vegetation and the minerogenic substrate under the local water-cycle conditions • The selforganizing plant cover as the efficient protector of habitat stability

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