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Journal of Applied Remote Sensing

Detection of <italic<Olea europaea</italic< subsp. <italic<cuspidata</italic< and <italic<Juniperus procera</italic< in the dry Afromontane forest of northern Ethiopia using subpixel analysis of Landsat imagery
Author(s): Hadgu Hishe; Kidane Giday; Mulugeta Neka; Teshome Soromessa; Jos Van Orshoven; Bart Muys
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Paper Abstract

Comprehensive and less costly forest inventory approaches are required to monitor the spatiotemporal dynamics of key species in forest ecosystems. Subpixel analysis using the earth resources data analysis system imagine subpixel classification procedure was tested to extract <italic<Olea europaea</italic< subsp. <italic<cuspidata</italic< and <italic<Juniperus procera</italic< canopies from Landsat 7 enhanced thematic mapper plus imagery. Control points with various canopy area fractions of the target species were collected to develop signatures for each of the species. With these signatures, the imagine subpixel classification procedure was run for each species independently. The subpixel process enabled the detection of <italic<O. europaea</italic< subsp. <italic<cuspidata</italic< and <italic<J. procera</italic< trees in pure and mixed pixels. Total of 100 pixels each were field verified for both species. An overall accuracy of 85% was achieved for <italic<O. europaea</italic< subsp. <italic<cuspidata</italic< and 89% for <italic<J. procera</italic<. A high overall accuracy level of detecting species at a natural forest was achieved, which encourages using the algorithm for future species monitoring activities. We recommend that the algorithm has to be validated in similar environment to enrich the knowledge on its capability to ensure its wider usage.

Paper Details

Date Published: 24 December 2015
PDF: 10 pages
J. Appl. Remote Sens. 9(1) 095975 doi: 10.1117/1.JRS.9.095975
Published in: Journal of Applied Remote Sensing Volume 9, Issue 1
Show Author Affiliations
Hadgu Hishe, Mekelle Univ. (Ethiopia)
Kidane Giday, Mekelle Univ. (Ethiopia)
Mulugeta Neka, Bahir Dar Univ. (Ethiopia)
Teshome Soromessa, Addis Ababa Univ. (Ethiopia)
Jos Van Orshoven, KU Leuven (Belgium)
Bart Muys, KU Leuven (Belgium)

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