Author:Debba, PraveshDate:Oct 2008A presentation was done at the Chinese Academy of Geological Science in October 2008 on optimal field sampling for both exploration targets and sampling for geochemicals in mine tailing areasRead more
Author:Debba, Pravesh; Carranza, EJM; Stein, A; Van der Meer, FDDate:Aug 2008This paper describes a quantitative methodology for deriving optimal exploration target zones based on a probabilistic mineral prospectivity map. The methodology is demonstrated in the Rodalquilar mineral district in Spain. A subset of known ...Read more
Author:Munyati, C; Economon, EB; Malahlela, OEDate:Jul 2013The proliferation of woody plant species on savanna rangelands (i.e. bush encroachment) degrades rangeland quality, thereby threatening the biodiversity conservation effort as well as pastoral farming. Hyperspectral remote sensing offers ...Read more
Author:Cho, Moses A; van Aardt, J; Main, Russell S; Majeke, BDate:Apr 2010Remote sensing is viewed as a cost-effective alternative to intensive field surveys in assessing site factors that affect growth of Eucalyptus grandis over broad areas. The objective of this study was to assess the utility of hyperspectral ...Read more
Author:Debba, PraveshDate:Jul 2009This presentation to the SASA Eastern Cape Chapter at Rhodes University studies the variability within a species class and the variability between the species classes of seven spectrally similar tree species and presents ways in which the ...Read more
Author:Cho, Moses A; Debba, Pravesh; Mathieu, Renaud SA; Naidoo, Laven; Van Aardt, J; Asner, GDate:Nov 2010Differences in within-species phenology and structure are controlled by genetic variation, as well as topography, edaphic properties, and climatic variables across the landscape and present important challenges to species differentiation with ...Read more
Author:Debba, PraveshDate:Jul 2009This presentation presented to the SASA Eastern Cape Chapter at Rhodes University posses two questions: (a) how could estimates of abundances of spectrally similar iron-bearing oxide/hydroxide/sulfate minerals in complex mixtures be obtained ...Read more
Author:Ramoelo, Abel; Skidmore, A; Schlerf, M; Heitkönig, I; Mathieu, Renaud SA; Cho, Moses ADate:Aug 2013Determining the foliar N: P ratio provides a tool for understanding nutrient limitation on plant production and consequently for the feeding patterns of herbivores. In order to understand the nutrient limitation at landscape scale, remote ...Read more
Author:Majeke, B; Cho, Moses A; Debba, Pravesh; Mathieu, Renaud SA; Ramoelo, AbelDate:Mar 2009The management of the Kruger National Park, South Africa has expressed the need to find cost-effective and rapid means to assess species diversity in the park. Remote sensing is viewed as a cost-effective alternative to intensive field sampling. ...Read more
Author:Dudeni, N; Debba, Pravesh; Cho, Moses A; Mathieu, Renaud SADate:Aug 2009In vegetation spectroscopy, compositional information of leaves contained at band level or across the electromagnetic spectrum (EMS) and parts thereof, plays a huge rule in the analysis of spectra and their relations to the reflectance patterns ...Read more
Author:Debba, PraveshDate:Aug 2008At this presentation, the author discussed a statistical method for deriving optimal spatial sampling schemes. First I focus on ground verification of minerals derived from hyperspectral data. Spectral angle mapper (SAM) and spectral feature ...Read more