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Referenztyp Buchkapitel
DOI / URL
Titel (primär) Verbuschungsdynamik an Wasserstellen in der südlichen Kalahari: ein räumliches Simulationsmodell
Titel (sekundär) Jahrestagung 1995, Dresden/Tharandt
Autor Jeltsch, F.; Stephan, T.; Milton, S.J.; Dean, W.R.J.; Van Rooyen, N.;
Herausgeber Pfadenhauer, J.; Kappen, L.; Mahn, E.G.; Otte, A.; Plachter, H.;
Journal / Serie Verhandlungen der Gesellschaft für Ökologie
Erscheinungsjahr 1996
Department OESA;
Band/Volume 26
Sprache deutsch;
Keywords Savanne, gitterbasiertes Simulationsmodell, Strauch-Gras Wechselwirkung, Viehbeweidung, Bestockungsraten, Farmlanddegradation
Abstract Shrub encroachment at waterholes in the southern Kalahari - a spatial simulation model
Shrub encroachment is one of the major problems in arid and semi-arid savannas of southern Africa. Especially artificial waterholes in the Kalahari often show a distinct increase in woody vegetation cover. However, the formation of shrub encroached piosphere zones is not always unidirectional among different environmental parameters. It is controversial whether piosphere zones expand in the course of time and what the impact of different stocking rates and rainfall seenarios on this process is. On the basis of a spatially explicit, grid based Simulation model the piosphere dynamics at two different localities ( a high and a low rainfall scenario) in the southern Kalahari is compared. The model results show that under the high rainfall scenario distinct piosphere zones and shrub encroachment develop for a wide range of stocking rates. The piosphere expands in the course of time. Under the low rainfall scenario only high grazing pressure Ieads to shrub encroachment within Urnespans below 80 years and the piosphere expands and contracts in response to the highly variable rainfall.
ID 22429
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=22429
Jeltsch, F., Stephan, T., Milton, S.J., Dean, W.R.J., Van Rooyen, N. (1996):
Verbuschungsdynamik an Wasserstellen in der südlichen Kalahari: ein räumliches Simulationsmodell
In: Pfadenhauer, J., Kappen, L., Mahn, E.G., Otte, A., Plachter, H. (Hrsg.)
Jahrestagung 1995, Dresden/Tharandt
Verhandlungen der Gesellschaft für Ökologie 26
Fischer, Stuttgart, S. 435 - 442