Forest species mapping using airborne hyperspectral APEX data
Journal Title: Miscellanea Geographica - Regional Studies on Development - Year 2016, Vol 20, Issue 1
Abstract
The accurate mapping of forest species is a very important task in relation to the increasing need to better understand the role of the forest ecosystem within environmental dynamics. The objective of this paper is the investigation of the potential of a multi-temporal hyperspectral dataset for the production of a thematic map of the dominant species in the Forêt de Hardt (France). Hyperspectral data were collected in June and September 2013 using the Airborne Prism EXperiment (APEX) sensor, covering the visible, near-infrared and shortwave infrared spectral regions with a spatial resolution of 3 m by 3 m. The map was realized by means of a maximum likelihood supervised classification. The classification was first performed separately on images from June and September and then on the two images together. Class discrimination was performed using as input 3 spectral indices computed as ratios between red edge bands and a blue band for each image. The map was validated using a testing set selected on the basis of a random stratified sampling scheme. Results showed that the algorithm performances improved from an overall accuracy of 59.5% and 48% (for the June and September images, respectively) to an overall accuracy of 74.4%, with the producer’s accuracy ranging from 60% to 86% and user’s accuracy ranging from 61% to 90%, when both images (June and September) were combined. This study demonstrates that the use of multi-temporal high-resolution images acquired in two different vegetation development stages (i.e., 17 June 2013 and 4 September 2013) allows accurate (overall accuracy 74.4%) local-scale thematic products to be obtained in an operational way.
Authors and Affiliations
Giulia Tagliabue, Cinzia Panigada, Roberto Colombo, Francesco Fava, Chiara Cilia, Frédéric Bare, Kristin Vreys, Koen Meuleman, Micol Rossini
DIFFERENTIATION OF THERMAL CONDITIONS IN THE VERTICAL PROFILE OF NATURAL NATIONAL PARK OF CARPATHIANS
In the paper, the results of field studies using automatic meteorological stations are presented. The studies were conducted in July 2005 - July 2006 in the vertical profile of Natural National Park of Carpathians. The r...
SHOPPING CENTRES IN WARSAW AND BRATISLAVA: A COMPARATIVE ANALYSIS
The aim of the paper is to summarise the development of shopping centres and their current locations, types and sizes in Warsaw and Bratislava using a comparative analysis method. Both cities are situated in post-communi...
Measures of social segregation in the context of Warsaw, Berlin and Paris metropolitan areas
Social segregation is a subject common in contemporary studies of metropolitan areas. Until recently, studies of segregation focused on the distribution of ethnic groups, immigrants, and the poor. Today, they also cover...
The Application of Corporate Social Responsibility in European Agriculture
The aim of this article is to show that Corporate Social Responsibility (CSR) can be applied in agriculture as a sustainable development tool. This paper shows the connections between CSR and the Common Agricultural Poli...
The peripheries of development: development and labour in circumstances of constant shortages, as exemplified by the Frías district of Peru
Empirical research into social vulnerability – and into strategies that allow people to persist or secure their existence – has most often concerned itself with peripheral, poorly-developed regions with a long history of...