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Towards Detecting Swath Events in TerraSAR-X Time Series to Establish NATURA 2000 Grassland Habitat Swath Management as Monitoring Parameter
Department of Geoinformation for Environmental Planning, Technische Universität Berlin, Straße des 17. Juni 145, 10623 Berlin, Germany
Institute of Photogrammetry and GeoInformation, Leibniz Universität Hannover, Nienburger Str. 1, 30167 Hannover, Germany
Luftbild Umwelt Planung GmbH Potsdam, Große Weinmeisterstraße 3a, 14469 Potsdam, Germany
* Author to whom correspondence should be addressed.
Received: 13 April 2011; in revised form: 21 June 2011 / Accepted: 22 June 2011 / Published: 29 June 2011
Abstract: Spatial monitoring tools are necessary to respond to the threat of global biodiversity loss. At the European scale, remote sensing tools for NATURA 2000 habitat monitoring have been requested by the European Commission to fulfill the obligations of the EU Habitats Directive. This paper introduces a method by which swath events in semi-natural grasslands can be detected from multi-temporal TerraSAR-X data. The investigated study sites represent rare and endangered habitats (NATURA 2000 codes 6410, 6510), located in the Döberitzer Heide nature conservation area west of Berlin. We analyzed a time series of 11 stripmap images (HH-polarization) covering the vegetation period affected by swath (June to September 2010) at a constant 11-day acquisition rate. A swath detection rule was established to extract the swath events for the NATURA 2000 habitats as well as for six contrasting pasture sites not affected by swath. All swath events observed in the field were correctly allocated. The results indicate the potential to allocate semi-natural grassland swath events to 11-day-periods using TerraSAR-X time series. Since the conservation of semi-natural grassland habitats requires compliance with specific swath management rules, the detection of swath events may thus provide new parameters for the monitoring of NATURA 2000 grassland habitats.
Keywords: NATURA 2000; semi-natural grassland; swath detection; TerraSAR-X; multi-temporal; time series; environmental management; biodiversity
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Schuster, C.; Ali, I.; Lohmann, P.; Frick, A.; Förster, M.; Kleinschmit, B. Towards Detecting Swath Events in TerraSAR-X Time Series to Establish NATURA 2000 Grassland Habitat Swath Management as Monitoring Parameter. Remote Sens. 2011, 3, 1308-1322.
Schuster C, Ali I, Lohmann P, Frick A, Förster M, Kleinschmit B. Towards Detecting Swath Events in TerraSAR-X Time Series to Establish NATURA 2000 Grassland Habitat Swath Management as Monitoring Parameter. Remote Sensing. 2011; 3(7):1308-1322.
Schuster, Christian; Ali, Iftikhar; Lohmann, Peter; Frick, Annett; Förster, Michael; Kleinschmit, Birgit. 2011. "Towards Detecting Swath Events in TerraSAR-X Time Series to Establish NATURA 2000 Grassland Habitat Swath Management as Monitoring Parameter." Remote Sens. 3, no. 7: 1308-1322.