Special Section on Advances in Remote Sensing Applications for Locust Habitat Monitoring and Management

Object-based locust habitat mapping using high-resolution multispectral satellite data in the southern Aral Sea basin

[+] Author Affiliations
Peter Navratil

Remote Sensing Solutions GmbH, Isarstr. 3, D-82065 Baierbrunn, Germany

Hans Wilps

In der Herget 20, D-66955 Pirmasens, Germany

J. Appl. Remote Sens. 7(1), 075097 (May 28, 2013). doi:10.1117/1.JRS.7.075097
History: Received May 31, 2012; Revised March 25, 2013; Accepted March 26, 2013
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Abstract.  Three different object-based image classification techniques are applied to high-resolution satellite data for the mapping of the habitats of Asian migratory locust (Locusta migratoria migratoria) in the southern Aral Sea basin, Uzbekistan. A set of panchromatic and multispectral Système Pour l’Observation de la Terre-5 satellite images was spectrally enhanced by normalized difference vegetation index and tasseled cap transformation and segmented into image objects, which were then classified by three different classification approaches: a rule-based hierarchical fuzzy threshold (HFT) classification method was compared to a supervised nearest neighbor classifier and classification tree analysis by the quick, unbiased, efficient statistical trees algorithm. Special emphasis was laid on the discrimination of locust feeding and breeding habitats due to the significance of this discrimination for practical locust control. Field data on vegetation and land cover, collected at the time of satellite image acquisition, was used to evaluate classification accuracy. The results show that a robust HFT classifier outperformed the two automated procedures by 13% overall accuracy. The classification method allowed a reliable discrimination of locust feeding and breeding habitats, which is of significant importance for the application of the resulting data for an economically and environmentally sound control of locust pests because exact spatial knowledge on the habitat types allows a more effective surveying and use of pesticides.

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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Peter Navratil and Hans Wilps
"Object-based locust habitat mapping using high-resolution multispectral satellite data in the southern Aral Sea basin", J. Appl. Remote Sens. 7(1), 075097 (May 28, 2013). ; http://dx.doi.org/10.1117/1.JRS.7.075097


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