Our study was based on a time-series of EVI satellite images
provided by the MODIS (Moderate Resolution Imaging Spectroradiometer)
Terra sensor from January 2001 to December 2010. We
used MOD13Q1 product, which provides 23 EVI maximum value
composite (MVC) images per year (every sixteen days) with an
approximated pixel size of 230 230 m. The images are geometrically
and atmospherically corrected and include quality assessment
flags that we used to mask those pixels flagged as cloud,
shade, water, snow, and with high aerosol content. For each year,
we calculated the EVI annual mean and obtained the long-term
average of the EVI annual mean (EVI_mean) as a surrogate of
average ANPP.