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Tree Number Estimation with the Use of Vhr Natural Colour Orthophotos Over a Heterogeneous Landscape in Northern Greece : Volume Xl-7/W3, Issue 1 (29/04/2015)

By: V. Tsioukas; G. Doxani; M. Tsakiri-strati; S. Siachalou; P. Stournara; G. Mallinis

Description: Aristotle University of Thessaloniki (AUTH), School of Rural and Surveying Engineering, Thessaloniki, Greece. Spatial explicit knowledge regarding the quantity and the spatial distribution of forest parameters is crucial for sustainable forest management, as well as in fulfilling national reporting needs in the framework of international treaties (i.e. Kyoto Protocol, FAO, EFFIS etc). Especially, tree number which can be used for assessing forest tree density (tree number/ha), is among the most important and laboursome parameters to be measured in the field. The aim of this study is to estimate tree number based on the use of nationwide, freely available, very high spatial resolution orthophotos acquired from Greek National Cadastre and Mapping Agency during the 2007-2009 period. The study area is the University Forest of Taxiarchis, which is located in central Halkidiki, Northern Greece. The dominant species of the forest includes both broadleaves (oak, beech) and coniferous species (Black pine, Calabrian pine), which are found in both pure and mixed stands. Tree crown detection was tested on natural color ortho...

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