More information:

Oldeland, J., Dorigo, W., Lieckfeld, L., Lucieer, A. and Jürgens, N. 2010. Combining vegetation indices, constrained ordination and fuzzy classification for mapping semi-natural vegetation units from hyperspectral imagery. Remote Sensing of Environment, 114(6): 1155–1166


Description:

Combining vegetation indices, constrained ordination and fuzzy classification for mapping semi-natural vegetation units from hyperspectral imagery.

Summary / Notes:

Vegetation mapping of plant communities at fine spatial scales is increasingly supported by remote sensing technology. However, combining ecological ground truth information and remote sensing datasets for mapping approaches is complicated by the complexity of ecological datasets. In this study, we present a new approach that uses high spatial resolution hyperspectral datasets to map vegetation units of a semiarid rangeland in Central Namibia. Field vegetation surveys provide the input to the workflow presented in this study. The collected data were classified by hierarchical cluster analysis into seven vegetation units that reflect different ecological states occurring in the study area. Spectral indices covering vegetation and soil characteristics were calculated from hyperspectral remote sensing imagery and used as environmental variables in a constrained ordination by applying redundancy analysis (RDA). The resulting statistical relationships between vegetation data and spectral indices were transferred into images of ordination axes, which were subsequently used in a supervised fuzzy c-means classification approach relying on a k-NN distance metric. Membership images for each vegetation unit as well as a confusion image of the classification result allowed a sound ecological interpretation of the resulting hard classification map. Classification results were validated with two independent reference datasets. For an internal and external validation dataset, overall accuracy reached 98% and 64% with kappa values of 0.98 and 0.53, respectively. Critical steps during the mapping workflow were highlighted and compared with similar mapping approaches. Keywords: Cluster analysis, Redundancy analysis, Multivariate, Supervised fuzzy c-means, Semiarid, Rangeland, Namibia, Imaging spectroscopy.

Year: 2010

Type: Journal Article

URL: http://www.sciencedirect.com/science/article/pii/S0034425710000258


Top 50 related results:

You may also be interested in the following items which are on a similar or related topic, listed in order of similarity.

Results per page:

Results: 1 to 50 of 50

To FILTER: Use the pale green row to filter the results on this page. Type in text or select from the year list.

Rows matching filter(s): All
What is this row? 
Data titleYearOriginFile typeDownloadkml/kmz
Holz, G. and Schreuder, W. 1988. Navorsing oor die betrokkenheid van plantpatogene swamme by indringerbosafsterwing. Agricola, 5: 12-15
  » More info & related results
1988Ministry of Agriculture, Water and ForestryJournal Article1.02 mb pdf
Preview
van Rensburg, W.L.J. 1990. Groeikragtigheid en saadontkieming by weiplante. Agricola, 8: 31-34
  » More info & related results
1990Ministry of Agriculture, Water and ForestryJournal Article902 kb pdf
Preview
Klaassen, E.S. and Kwembeya, E.G. (eds.). 2013. A Checklist of Namibian Indigenous and Naturalised Plants. Occasional Contributions No. 5, National Botanical Research Institute, Windhoek, Namibia
  » More info & related results
2013 Report3.39 mb pdf
Preview
Craven, P., Dreyer, L.L. and van Wyk, A.B. 2009. Floristic groups in Namibia. South African Journal of Botany, 75(2): 397
  » More info & related results
2009 Journal Article
Loope, L.L. and Sanchez, P.G. 1988. Biological invasions of arid land nature reserves. Biological Conservation, 44(1–2): 95–118
  » More info & related results
1988 Journal Article
Burke, A. and Mannheimer, C. 2004. The Sperrgebiet - a Diversity Hotspot of Desert Plants in: Desert Plants, 19-22
  » More info & related results
2004 Book, Book Section, Booklet1.9 mb pdf
Preview
Joubert, D.F. 2014. The Dynamics of Bush Thickening by Acacia Mellifera in the Highland Savanna of Namibia. PhD, Faculty of Natural and Agricultural Sciences, Department of Animal, Wildlife and Grassland Sciences (Grassland Science), University of the Free State, Bloemfontein, South Africa
  » More info & related results
2014 Thesis3.28 mb pdf
Preview
Dames, R. 2009. Grass fed beef and the controlled fodder flow grazing management strategy, a model for the production of super healthy red meat for the Arid and Semi-Arid regions of Southern Africa. 13th Namibian Rangeland Forum - The role of biodiversity in rangeland management and policy, Neudamm Faculty of Agriculture and Natural Resources, Windhoek, Dates: 27-29 October 2009
  » More info & related results
2009 Presentation3.17 mb pdf
Preview
Beyer, M., Koeniger, P., Gaj, M., Hamutoko, J.T., Wanke, H. and Himmelsbach, T. 2016. A deuterium-based labeling technique for the investigation of rooting depths, water uptake dynamics and unsaturated zone water transport in semiarid environments. Journal of Hydrology, 533: 627–643
  » More info & related results
2015 Journal Article
Wagner, T.C., Hane, S., Joubert, D.F. and Fischer, C. 2016. Herbaceous legume encroachment reduces grass productivity and density in arid rangelands. PLoS ONE, 11(11): e0166743
  » More info & related results
2016 Journal Article1.95 mb pdf
Preview
Tarnita, C.E., Bonachela, J.A., Sheffer, E., Guyton, J.A., Coverdale, T.C., Long, R.A. and Pringle, R.M. 2017. A theoretical foundation for multi-scale regular vegetation patterns. Nature, 541: 398–401
  » More info & related results
2017 Journal Article
Burke, A. 2015. Rare plants in a Succulent – Nama Karoo ecotone in southern Africa. African Journal of Ecology, 53(1): 93–102
  » More info & related results
2015 Journal Article
Thiede, J., Metzing, D., Veste, M. and Jürgens, N. (eds). 2004. Succulent Plant Research in Africa. Sukkulentenforschung in Afrika. Festschrift Prof. Dr. Hans-Dieter Ihlenfeldt. Schumannia 4. Isensee, Oldenburg. Biodiversity and Ecology, 2: 250 pages
  » More info & related results
2004 Journal Article
Bruyns, P.V., Hanáček, P. and Klak, C. 2019. Crassula, insights into an old, arid-adapted group of southern African leaf-succulents. Molecular Phylogenetics and Evolution, 131: 35-47
  » More info & related results
2019 Journal Article
TAP: Boscia tomentosa
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Ceraria longipedunculata
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Combretum collinum subsp gazense
  » More info & related results
2005Tree Atlas of NamibiaShapefile83 kb zip3 kb kmz
TAP: Commiphora cervifolia
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Commiphora mollis
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip2 kb kmz
TAP: Croton megalobotrys
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Datura innoxia
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Ectadium virgatum
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Entandrophragma caudatum
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Euphorbia monteroi subsp brandbergensis
  » More info & related results
2005Tree Atlas of NamibiaShapefile83 kb zip1 kb kmz
TAP: Ficus fischeri
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Gossypium triphyllum
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Grewia subspathulata
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip2 kb kmz
TAP: Hibiscus castroi
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Indigofera adenocarpa
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Lebeckia spinescens
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Maerua angolensis
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Nicotiana glauca
  » More info & related results
2005Tree Atlas of NamibiaShapefile83 kb zip3 kb kmz
TAP: Ormocarpum kirkii
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Pavetta gardeniifolia var subtomentosa
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Phaeoptilum spinosum
  » More info & related results
2005Tree Atlas of NamibiaShapefile83 kb zip11 kb kmz
TAP: Pterocarpus rotundifolius
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Rhus populifolia
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Schinus molle
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Tacazzea apiculata
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
TAP: Welwitschia mirabilis
  » More info & related results
2005Tree Atlas of NamibiaShapefile83 kb zip1 kb kmz
TAP: Zygophyllum leptopetalum
  » More info & related results
2005Tree Atlas of NamibiaShapefile82 kb zip1 kb kmz
Etosha National Park - Profile
  » More info & related results
Ministry of Environment and TourismBook, Book Section, Booklet235 kb pdf
Preview
Versfeld, W.v.R. 1987. Strookbehandeling met die onkruidoder tordon 225. Agricola, 4: 20-24
  » More info & related results
1987Ministry of Agriculture, Water and ForestryJournal Article1.08 mb pdf
Preview
Mmopelwa, G. 2006. Economic and financial analysis of harvesting and utilization of river reed in the Okavango Delta, Botswana. Journal of Environmental Management, 79(4): 329–335
  » More info & related results
2006 Journal Article
Stehn, H. 2008. Rangeland management
  » More info & related results
2008 Report16.95 mb pdf
Preview
Rothauge, A. 2009. What will it take to recover Namibia's degraded rangelands?. 13th Namibian Rangeland Forum - The role of biodiversity in rangeland management and policy, Neudamm Faculty of Agriculture and Natural Resources, Windhoek, Dates: 27-29 October 2009
  » More info & related results
2009 Presentation1.5 mb pdf
Preview
Dean, W.R.J. and Milton, S.J. 2001. Responses of birds to rainfall and seed abundance in the southern Karoo, South Africa. Journal of Arid Environments, 47(1): 101–121
  » More info & related results
2001 Journal Article
Harmse, C.J., Kellner, K. and Dreber, N. 2016. Restoring productive rangelands: A comparative assessment of selective and non-selective chemical bush control in a semi-arid Kalahari savanna. Journal of Arid Environments, 135: 39–49
  » More info & related results
2016 Journal Article
Ulbrich, R., Kwembeya, E., Joubert, D. and De Cauwer, V. 2017. Species distribution modelling of selected invasive alien plant species in Namibia and Germany. University of Namibia
  » More info & related results
2017 Report
Joubert, D. and Zimmermann, I. 2017. Decision support system on how to control bush thickening by Acacia mellifera in Namibian savanna rangelands
  » More info & related results
2017 Book, Book Section, Booklet3.24 mb pdf
Preview

» Links to useful free software for working with shapefiles, kml and kmz files, pdf files and more.