Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial resolution satellite images: A case study from the Perancak estuary, Bali, Indonesia
2018
Proisy, Christophe | Viennois, Gaëlle | Sidik, Frida | Andayani, Ariani | Enright, James Antony | Guitet, Stéphane | Gusmawati, Niken | Lemonnier, Hugues | Muthusankar, Gowrappan | Olagoke, Adewole, A | Prosperi, Juliana | Rahmania, Rinny | Ricout, Anaïs, A | Soulard, Benoit | Suhardjono, X | Institut Français de Pondichéry (IFP) ; Ministère de l'Europe et des Affaires étrangères (MEAE)-Centre National de la Recherche Scientifique (CNRS) | Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]) | The Ministry of Marine Affairs and Fisheries | Mangrove Action Project | Groupement d'Interêt Public Ecosystèmes Forestiers GIP ECOFOR (GIP ECOFOR ) | Ifremer - Nouvelle-Calédonie ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) | Université de la Nouvelle-Calédonie (UNC) | Technische Universität Dresden = Dresden University of Technology (TU Dresden) | Indonesian Institute of Sciences (LIPI) | Projet INDESO; http://www.indeso.web.id
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Show more [+] Less [-]English. Revegetation of abandoned aquaculture regions should be a priority for any integrated coastal zone management (ICZM). This paper examines the potential of a matchless time series of 20 very high spatial resolution (VHSR) optical satellite images acquired for mapping trends in the evolution of mangrove forests from 2001 to 2015 in an estuary fragmented into aquaculture ponds. Evolution of mangrove extent was quantified through robust multitemporal analysis based on supervised image classification. Results indicated that mangroves are expanding inside and outside ponds and over pond dykes. However, the yearly expansion rate of vegetation cover greatly varied between replanted ponds. Ground truthing showed that only Rhizophora species had been planted, whereas natural mangroves consist of Avicennia and Sonneratia species. In addition, the dense Rhizophora plantations present very low regeneration capabilities compared with natural mangroves. Time series of VHSR images provide comprehensive and intuitive level of information for the support of ICZM.
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