Study on the MODIS NDVI and NOAA NDVI based spatial scaling method A case study in Inner Mongolia

The dominant grassland types in Inner Mongolia were selected as research area and and the annual variation pattern of the relationship between MODIS NDVI and NOAA NDVI was analyzed in growing seasons from 2000 to 2003. The spatial scaling methods between different resolutions datum of remote sensing in largescale spatial extent were studied. At the same time, The MODIS NDVI and NOAA NDVI datum in July and August in 2002 were used to build the spatial scaling model and the model was applied to validate the precision of the model. The result indicated that this spatial scaling method was effective, and the model could be applied to other time quantum. This method could scientifically and effectively analyze and compare the datum of NOAA NDVI and MODIS NDVI.