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LAI determination in dune vegetation: a comparison of different techniques
Willaert, L.; Samson, R.; Provoost, S.; Verbeke, L.; Lemeur, R.; Meuleman, K.; De Wulf, R. (2005). LAI determination in dune vegetation: a comparison of different techniques, in: Herrier, J.-L. et al. (Ed.) Proceedings 'Dunes and Estuaries 2005': International Conference on nature restoration practices in European coastal habitats, Koksijde, Belgium 19-23 September 2005. VLIZ Special Publication, 19: pp. 681-682
In: Herrier, J.-L. et al. (2005). Proceedings 'Dunes and Estuaries 2005': International Conference on nature restoration practices in European coastal habitats, Koksijde, Belgium 19-23 September 2005. VLIZ Special Publication, 19. Vlaams Instituut voor de Zee (VLIZ): Oostende. XIV, 685 pp.
In: VLIZ Special Publication. Vlaams Instituut voor de Zee (VLIZ): Oostende. ISSN 1377-0950
Available in  Authors 
Document type: Conference paper
Keywords
    Remote sensing > Geosensing > Airborne sensing
    Topographic features > Beach features > Dunes
    Vegetation
    Vegetation
    Vegetation
    Belgium, De Westhoek [Marine Regions]
    Marine/Coastal
Authors  Top 
  • Willaert, L.
  • Samson, R.
  • Provoost, S.
  • Verbeke, L.
  • Lemeur, R.
  • Meuleman, K.
  • De Wulf, R.
Abstract
    Research was conducted in the nature reserve De Westhoek (De Panne, Belgium) in order to determine leaf-area-index (LAI) in different dune vegetation types by both direct (destructively) and indirect optical measurements. The destructive LAI determination was conducted in herbaceous and shrub vegetation types. It was found that the LAI of herbaceous vegetation ranges between 0.87 and 4.60 and the LAI of shrub vegetation between 2.25 and 3.58. Ground-based optical determination of LAI was only conducted in the shrub vegetation, by means of the SunScan (Delta-T Devices Ltd, Cambridge, UK). This indirect LAI method systematically overestimated direct LAI. Another applied optical method is the hemispherical photography (Nikon Coolpix 5000 camera). Airborne remote sensing data are used to establish a relationship between direct LAI and some vegetation indices. Based on the above established relationship a map of the horizontal LAI distribution in the nature reserve De Westhoek will be produced.
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