Waldoekosysteme: Umweltbedingungen, Zustand sowie Entwicklungskonzepte mit der Basis einer flaechenbezogenen, stoffhaushaltlichen Bilanzierung in Schwerpunktforschungsraeumen Abschlussbericht

Abstract

For three focal research regions of the forest ecosystem research in the Federal Republic of Germany, in a mapscale of 1:200 000 and in a size of about 3600 - 6400 qkm each, the following work was examined: 1. extension of geographical information systems, including about 40 thematic maps on characteristics and environmental conditions of forest ecosystems. 2. characterisation, development of algorithms and spatial assessment of ecosystem reaction types, deposition loads, exceedances of critical loads and risks of groundwater pollution. 3. Development of a dynamic model on balance of material, simulation runs on: number of stand rotations, base cation and nitrate leaching from the soils under current conditions. These area-related calculations are long-term prognoses (decades to centuries) in a regional scale. The deposition loads in these mountaineous regions are rather high (reference years 1986-92), and a 75% reduction of the deposition has to be recommended. The acidification potential for ground water is in all regions medium to high on two thirds of the area. Hence, besides emission reduction, soil sanitation measures have to be taken into account. (orig.)SIGLEAvailable from TIB Hannover: F95B2411+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman