Title :
Evaluation of MODIS vegetation indices and change thresholds for the monitoring of the Brazilian Cerrado
Author :
Ferreira, Laerte Guimarães ; Ferreira, Manuel Eduardo ; Ferreira, Nuno C. ; De Jesus, Eristelma Teixeira ; Sano, Edson Eijy ; Huete, Alfredo R.
Author_Institution :
Image Process. & GIS Lab., Fed. Univ. of Goias, Goiania, Brazil
Abstract :
We investigated the use of the MODIS vegetation indices and the effect of distinct change thresholds for monitoring land cover change in the Cerrado biome, the largest region of neotropical savanna vegetation in the world and the most threatened biome in Brazil. On a preliminary basis, our results suggest the use of change thresholds between 35 and 42% and the us pe of the enhanced vegetation index (EVI), which, in comparison to the normalized difference vegetation index (NDVI), showed a more stable and predictable behaviour.
Keywords :
terrain mapping; vegetation mapping; Brazil; Brazilian Cerrado monitoring; Cerrado biome; MODIS vegetation indices; change thresholds; enhanced vegetation index; land cover change monitoring; neotropical savanna vegetation; normalized difference vegetation index; Biophysics; Data analysis; Geographic Information Systems; Geoscience; Image processing; Large-scale systems; MODIS; Remote monitoring; Spatial resolution; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1370098
