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

作者：Silverio Walter^*; Jaquet Jean Michel

来源：Journal of Applied Remote Sensing, 2009, 3(1): 033516.

DOI：10.1117/1.3106599

• remote sensing
• sustainable development
• snow and vegetation indices
• land-cover
• Andes
• DEM
• Landsat 7 ETM

On the basis of Landsat 7 ETM imagery, a prototype land-cover map was prepared for the Huascaran Biosphere Reserve ( Peru). This document should contribute to the sustainable management of the Huascaran 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.

• 出版日期2009-3-6