@InProceedings{DupuyHerFeyMorTra:2012:CoObTe,
               author = "Dupuy, Stephane and Herbreteau, Vincent and Feyfant, Tristan and 
                         Morand, Serge and Tran, Annelise",
                title = "Land-cover dynamics in Southeast Asia: Contribution of 
                         object-oriented techniques for change detection",
            booktitle = "Proceedings...",
                 year = "2012",
               editor = "Feitosa, Raul Queiroz and Costa, Gilson Alexandre Ostwald Pedro da 
                         and Almeida, Cl{\'a}udia Maria de and Fonseca, Leila Maria Garcia 
                         and Kux, Hermann Johann Heinrich",
                pages = "217--222",
         organization = "International Conference on Geographic Object-Based Image 
                         Analysis, 4. (GEOBIA).",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "land-cover change, remote sensing, Southeast Asia, deforestation, 
                         biodiversity.",
             abstract = "Land-cover changes occur at unprecedented rates in tropical 
                         ecosystems of Southeast Asia, threatening the high biodiversity of 
                         this region. To monitor such important changes, remote sensing 
                         techniques are increasingly used at different spatial scales. In 
                         this study, we investigate land-cover changes at landscape level 
                         over a twenty-year period in seven sites located in Cambodia, Lao 
                         Peoples Democratic Republic (Lao PDR) and Thailand. For each site 
                         we acquired high spatial resolution scenes from SPOT satellites at 
                         three dates from 1987 to 2008, as well as Digital Elevation Models 
                         (SPOT and SRTM DEMs). An object-oriented changes detection method 
                         was applied to the images to assess for each site i) the location 
                         and ii) the rate of land-cover changes. We also computed synthetic 
                         landscape indices from the classified objects, reflecting two main 
                         aspects of landscape ecology: fragmentation and landscape 
                         heterogeneity. The multi-temporal analysis of contrasted 
                         landscapes put into evidence the difficulty to implement a unique 
                         classification process including numerous object-related indices. 
                         Nevertheless, object-oriented classification techniques applied on 
                         SPOT imagery were appropriate to map the land-cover on the 
                         different study areas, allowing the analysis of land-cover 
                         changes. Our study highlighted different spatio-temporal patterns 
                         of land-cover changes among the study sites. According to our 
                         results, annual deforestation rates ranged from 0.65% to 1.84%, 
                         the highest changes rates being observed in Cambodia and Lao PDR. 
                         Moreover, fragmentation indices revealed disparities in the 
                         dynamics of habitat fragmentation between the three countries. 
                         Methods, results and perspectives of this work are discussed.",
  conference-location = "Rio de Janeiro",
      conference-year = "May 7-9, 2012",
                 isbn = "978-85-17-00059-1",
             language = "en",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP8W/3BSRSM8",
                  url = "http://urlib.net/ibi/8JMKD3MGP8W/3BSRSM8",
           targetfile = "063.pdf",
                 type = "Change Detection",
        urlaccessdate = "11 maio 2024"
}