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Spatial and temporal patterns of tree cover dynamics in the Mekong Basin between 2001 and 2011

Leinenkugel, Patrick und Oppelt, Natascha und Künzer, Claudia (2015) Spatial and temporal patterns of tree cover dynamics in the Mekong Basin between 2001 and 2011. 36th International Symposium on Remote Sensing of Environment, 2015-05-11 - 2015-05-15, Berlin, Deutschland.

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Kurzfassung

The forests in the Mekong Basin have been facing increasingly high pressure from the ongoing rapid socio-economic development evident in the Southeast Asian region over the last decades. In this context, eleven years of MODIS data from the platforms Aqua and Terra were utilised to produce a series of regional specific maps of percent tree cover for the lower Mekong Basin. The annual maps were produced for the time span 2001-2011 and are based on MODIS 8-day surface reflectance composites at 500m spatial resolution. Prediction was based on an open-source model tree algorithm that combines regression tree functionalities with linear least squares regression models. The model tree relates surface reflectance from MODIS to sub pixel tree cover estimates that were in turn derived from high resolution Landsat TM/ETM+ data. A comparison to the global MODIS tree cover product revealed a more accurate representation of tree cover, lower influence to climatic variability, and less distortions by external interferences. The derived data products further formed the basis for an in-depth analysis of the spatial and temporal patterns of tree cover loss in the Mekong region. The eleven-year trajectory of tree cover thereby allowed for a deeper analytical examination of land cover dynamics compared to a simple bi-temporal change detection approach. Significant tree cover changes were identified by utilizing long-term statistics on typical inter-annual prediction variability. Subsequently, areas identified as change where categorized according to their temporal patterns into temporary forest losses and permanent land cover conversions. Furthermore, the rate of change was analysed to differentiate between areas of rapid forest conversions and more gradual dynamics. It could be shown that specific anthropogenic processes result in characteristic temporal patterns of tree cover change. Information about these temporal patterns, therefore, may be a useful indicator for the direct causes of forest loss.

elib-URL des Eintrags:https://elib.dlr.de/95812/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Spatial and temporal patterns of tree cover dynamics in the Mekong Basin between 2001 and 2011
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Leinenkugel, Patrickpatrick.leinenkugel (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Oppelt, Nataschaoppelt (at) geographie.uni-kiel.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Künzer, ClaudiaClaudia.Kuenzer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2015
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:tree cover, mekong basin, remote sensing, time series
Veranstaltungstitel:36th International Symposium on Remote Sensing of Environment
Veranstaltungsort:Berlin, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:11 Mai 2015
Veranstaltungsende:15 Mai 2015
Veranstalter :International Society for Photogrammetry and Remote Sensing
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Fernerkundung der Landoberfläche (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Landoberfläche
Hinterlegt von: Frey, Dr. Corinne
Hinterlegt am:19 Jun 2015 12:55
Letzte Änderung:24 Apr 2024 20:01

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