@InProceedings{FerrazNetoVieiVianAlva:2011:AnMuDe,
               author = "Ferraz Neto, Sebasti{\~a}o and Vieira, Rita Marcia da Silva Pinto 
                         and Viana, Denilson Ribeiro and Alval{\'a}, Regina C{\'e}lia dos 
                         Santos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais - INPE} and {Instituto 
                         Nacional de Pesquisas Espaciais - INPE} and {Instituto Nacional de 
                         Pesquisas Espaciais - INPE} and {Instituto Nacional de Pesquisas 
                         Espaciais - INPE}",
                title = "An{\'a}lise multitemporal do desmatamento na {\'A}rea de 
                         Preserva{\c{c}}{\~a}o Ambiental da Chapada do Araripe, PE",
            booktitle = "Anais...",
                 year = "2011",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "6896--6902",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 15. (SBSR).",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "remote sensing, mixing model, environmental preservation, 
                         sensoriamento remoto, modelo de mistura, preserva{\c{c}}{\~a}o 
                         ambiental.",
             abstract = "The study was conducted in the Araripe plasterer pole located at 
                         Piaui, Pernambuco and Ceara border, Brazil, with an area of 
                         approximately 10,000 km2. The region is experiencing an 
                         accelerated degradation process due to improper management of 
                         natural resources. Extensive areas of native forests are being 
                         cleared and used for energy production for the gypsum industry. In 
                         1997, it was created the Araripe Environmental Protection Area 
                         (APA), in order to reduce and mitigate environmental degradation 
                         processes. The purpose of this APA was not to stop the activity in 
                         that region, but to adapt it in a sustainable manner, since the 
                         plaster pole is over an area of high vulnerability to 
                         desertification processes. The inappropriate use of natural 
                         resources in this region may intensify the environmental problems 
                         and accelerate the desertification process. Thus, the aim of this 
                         paper is to monitor the environmental degradation in the APA 
                         region during a period of 16 years, and evaluate if this region is 
                         been preserved since APA creation. To achieve the proposed aim we 
                         mapped deforestation and natural forest from 1990 to 2006 (one 
                         image every four years) using Landsat TM 5. We applied the Linear 
                         Spectral Mixing Model and we did a band ration between the 
                         resulting vegetation and soil bands which allowed a better 
                         identification of deforested areas. The results show that the 
                         deforestation had decreased since the APA creation and thus had a 
                         positive effect on the preservation of this vulnerable area.",
  conference-location = "Curitiba",
      conference-year = "30 abr. - 5 maio 2011",
                 isbn = "{978-85-17-00056-0 (Internet)} and {978-85-17-00057-7 (DVD)}",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "3ERPFQRTRW/3A4DC35",
                  url = "http://urlib.net/ibi/3ERPFQRTRW/3A4DC35",
           targetfile = "p0838.pdf",
                 type = "Desflorestamento",
        urlaccessdate = "09 maio 2024"
}