Research Papers

Prototype land-cover mapping of the Huascara´n Biosphere Reserve (Peru) using a digital elevation model, and the NDSI and NDVI indices

[+] Author Affiliations
Walter Silverio

Remote Sensing and GIS Unit, Earth Science Section, University of Geneva, 13 rue des Marai?chers, Geneva, 1203 Switzerland

Jean-Michel Jaquet

Earth Observation, UNEP/DEWA-Europe GRID Geneva, 11 Chemin des Ane´mones, Geneva, GE 1219 Switzerland

J. Appl. Remote Sens. 3(1), 033516 (March 6, 2009). doi:10.1117/1.3106599
History: Received May 15, 2008; Revised January 13, 2009; Accepted March 3, 2009; March 6, 2009; Online March 06, 2009
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Abstract

On the basis of Landsat 7 ETM+ imagery, a prototype land-cover map was prepared for the Huascara´n Biosphere Reserve (Peru). This document should contribute to the sustainable management of the Huascara´n Biosphere Reserve, while making it possible to establish a regional planning policy and to prepare a natural risks map, which is still lacking in the region. The influence of the topography on radiometry was attenuated by using the normalized difference snow index (NDSI) and normalized difference vegetation index (NDVI), which were segmented using their histogram. A digital elevation model (DEM) was introduced to define the "highlands" and "lowlands". In the latter, the slope derived from the DEM was combined with the NDVI to map the agricultural surfaces. Twenty-one spectral classes were defined and their correspondence with land-cover themes was checked by field observations. The land-cover map provides original information on the extent of the glacial cover, debris-covered glaciers, 881 lakes, vegetation density, agricultural surfaces, urban zones and mines.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Walter Silverio and Jean-Michel Jaquet
"Prototype land-cover mapping of the Huascara´n Biosphere Reserve (Peru) using a digital elevation model, and the NDSI and NDVI indices", J. Appl. Remote Sens. 3(1), 033516 (March 6, 2009). ; http://dx.doi.org/10.1117/1.3106599


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