Title :
Monitoring environmental change in the Andes based on SPOT-VGT and NOAA-AVHRR time series analysis
Author :
Tote, Carolien ; Beringhs, Katia ; Swinnen, Else ; Govers, Gerard
Author_Institution :
Centre for Remote Sensing & Earth Obs. Processes, Flemish Inst. for Technol. Res. (VITO), Mol, Belgium
Abstract :
Environmental change is an important issue in the Andes region. The objectives of this research are to study NDVI dynamics in the Andes region based on time series analysis of SPOT-Vegetation and NOAA-AVHRR, and to recognize to which extent this variability can be attributed to either climatic variability or human induced impacts. Correlation analysis between NDVI and SPI were performed in order to identify the best lag per pixel. Trends in SDVI and SPI were investigated using linear least square regression. Significant vegetation trends are found in 46% of the area. Both NDVI time series lead to different results, but the coupling of vegetation and precipitation is more pronounced for the SPOT-Vegetation data.
Keywords :
atmospheric precipitation; climatology; environmental monitoring (geophysics); remote sensing; time series; vegetation; Andes region; NDVI; NOAA-AVHRR time series analysis; SPI; SPOT-VGT time series analysis; SPOT-Vegetation data; climatic variability; correlation analysis; environmental change monitoring; human induced impacts; normalised difference vegetation index; standardised precipitation index; Correlation; Couplings; Estimation; Green products; Time series analysis; Vegetation; Vegetation mapping; NDVI; NOAA-AVHRR; SPOT-Vegetation; degradation; greening;
Conference_Titel :
Analysis of Multi-temporal Remote Sensing Images (Multi-Temp), 2011 6th International Workshop on the
Conference_Location :
Trento
Print_ISBN :
978-1-4577-1202-9
DOI :
10.1109/Multi-Temp.2011.6005100
