Patchiness in semi-arid dwarf shrublands: evidence from satellite-derived indices for elevated CO2 assimilation rates on a geochemical mound in the Karoo National Park, South Africa

  • AR Palmer ARC-Range and Forage Institute, PO Box 101, Grahamstown, 6140 South Africa
  • F Van der Heyden
Keywords: Assimilation rates, Beaufort West, <i>Eriocephalus ericoides</i> Druce, Geochemical mounds, Karoo National Park, NDVIs, Normalized difference vegetation indices, Nutrients, Plant cover, Plants, Remote sensing, <i>Rhigozum obovatum</i> Burch, Satellite-der

Abstract

Reports the results of a study conducted in which satellite-derived vegetation indices were used to identify a geochemical mound of higher active greenness in the Karoo National Park, Beaufort West. Illustrate a potential role for satellite imagery in developing management systems for arid shrublands, and highlights the importance of considering abiotic factors in the assessment of rangeland conditions. Illustrates with a mono-chromatic aerial photograph, a satellite image, tables and graphs

Keywords Assimilation rates; Beaufort West; Eriocephalus ericoides Druce; Geochemical mounds; Karoo National Park; NDVIs; Normalized difference vegetation indices; Nutrients; Plant cover; Plants; Remote sensing; Rhigozum obovatum Burch; Satellite-derived vegetation indices; Woody species; patchiness; semi-arid; dwarf shrubland; shrublands; co2; assimilation; karoo; south africa; ndvi; satellite imagery; geochemical mound; rhigozum obovatum; eriocephalus ericoides; pentzia incana; vegetation; botany

African Journal of Range & Forage Science, Vol. 14, Iss 3, p.75–80
Published
2007-07-03
Section
Articles

Journal Identifiers


eISSN: 1727-9380
print ISSN: 1022-0119