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Monitoring post-tsunami vegetation recovery in Phang-Nga province, Thailand, based on IKONOS imagery and field investigations – a contribution to the analysis of tsunami vulnerability of coastal ecosystems

Römer, Hannes und Jeewarongkakul, Jirapong und Kaiser, Gunilla und Ludwig, Ralf und Sterr, Horst (2011) Monitoring post-tsunami vegetation recovery in Phang-Nga province, Thailand, based on IKONOS imagery and field investigations – a contribution to the analysis of tsunami vulnerability of coastal ecosystems. International Journal of Remote Sensing, 33 (10), Seiten 3090-3121. Taylor & Francis. doi: 10.1080/01431161.2011.628710. ISSN 0143-1161.

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Offizielle URL: http://dx.doi.org/10.1080/01431161.2011.628710

Kurzfassung

A major tsunami in December 2004 devastated the coastal ecosystems along the Andaman Sea coast of Thailand. Since intact coastal ecosystems provide many important services for local communities at the Andaman Sea, it is crucial to investigate to what extent (in terms of percentage area and speed) the affected ecosystems were capable of recovering after the tsunami. Field measurements and multi-date IKONOS imagery were used to estimate the recovery and succession patterns of coastal vegetation types in the Phang-Nga province of Thailand, three years after the tsunami. Thus, this study contributes to a holistic understanding of the ecological vulnerability of the coastal area to tsunamis. A zone-based change detection approach is applied by comparing two change detection techniques: the first method involves the calculation of a recovery rate based on multi-temporal TNDVI (transformed normalized difference vegetation index) images (TNDVI approach), whereas the second approach is a combined approach of the change vector analysis (CVA). Although these two methods provide different types of information (quantitative for the TNDVI approach, qualitative for the CVA), they are comparable in terms of results and accuracies. The results reveal that recovery processes vary based on the type of the ecosystem and, furthermore, are strongly influenced by human activities. Grasslands, coconut plantations and the mixed vegetation cover could recover faster than the mangroves and casuarina forests. Among the forest ecosystems, recovery rates of casuarina forests were higher than for mangroves, but the recovery area was smaller. This study also discusses the potential and some limitations and inaccuracies of applying high-resolution optical imagery for assessing vegetation recovery at a local scale.

elib-URL des Eintrags:https://elib.dlr.de/85546/
Dokumentart:Zeitschriftenbeitrag
Titel:Monitoring post-tsunami vegetation recovery in Phang-Nga province, Thailand, based on IKONOS imagery and field investigations – a contribution to the analysis of tsunami vulnerability of coastal ecosystems
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Römer, Hanneshannes.roemer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Jeewarongkakul, JirapongWetlands International – Thailand office, Hat Yai, ThailandNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Kaiser, GunillaDepartment of Geography, Christian-Albrechts-Universität zu KielNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ludwig, RalfDepartment of Geography, Ludwig-Maximilians-UniversitätNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Sterr, HorstDepartment of Geography, Christian-Albrechts-Universität zu KielNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:25 Oktober 2011
Erschienen in:International Journal of Remote Sensing
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:33
DOI:10.1080/01431161.2011.628710
Seitenbereich:Seiten 3090-3121
Verlag:Taylor & Francis
ISSN:0143-1161
Status:veröffentlicht
Stichwörter:ecosystems, Thailand, tsunami, vulnerability, change detection, IKONOS, NDVI, recovery, vegetation
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Zivile Kriseninformation und Georisiken (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Deutsches Fernerkundungsdatenzentrum > Georisiken und zivile Sicherheit
Hinterlegt von: Römer, Hannes
Hinterlegt am:22 Nov 2013 10:42
Letzte Änderung:10 Jan 2019 15:48

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