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The Role of Remote Sensing and GIS in Enforcement of Areas of Permanent Preservation in the Brazilian Amazon
Titel:
The Role of Remote Sensing and GIS in Enforcement of Areas of Permanent Preservation in the Brazilian Amazon
Auteur:
Firestone, Laurel A. Souza, Carlos
Verschenen in:
Geocarto international
Paginering:
Jaargang 17 (2002) nr. 2 pagina's 53-58
Jaar:
2002-06
Inhoud:
Many studies have used remote sensing to detect forest conversion activities in the Amazon for the purposes of directing policy or generating data for environmental modeling. However, this technology has yet to be applied towards forest law enforcement in the region. In this study we design a violation detection system for Areas of Permanent Preservation using Landsat TM data and GIS, and test it in a logging town in the Eastern Amazon. Our detection methodology generates a simple forest cover map using unsupervised classification techniques, as well as river maps derived directly from remotely sensed data. Data produced through this detection system include a forest cover map, waterway map, map of Areas of Permanent Preservation, and violation map. We include a discussion of the advantages and limitations of each of these data products for law enforcement purposes in the region. Violations were detected in 60% of all Areas of Permanent Preservation in pastures and other cleared properties, showing extremely low law abidance once deforestation occurs. Overall, violation detection resulted in accuracy levels of 88.6%, illustrating the viability of efficiently monitoring land cover for law enforcement purposes in the Amazon.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 231 van 250 gevonden artikelen
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