MOODY, A, WOODCOCK, CE (1994). SCALE-DEPENDENT ERRORS IN THE ESTIMATION OF LAND-COVER PROPORTIONS - IMPLICATIONS FOR GLOBAL LAND-COVER DATASETS. PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 60(5), 585-594.
Aggregation of fine-resolution land-cover maps to coarser scales indicates that estimates of the proportions of land-cover types vary as a function of spatial resolution. The magnitude of these proportional errors in a forested area in northern California increase significantly as resolution exceeds a 90-m threshold. These errors could pose difficulties for the use of land-cover products generated from coarse-resolution sensors such as the NOAA-AVHRR and the MODIS sensor planned for the Eos program. The magnitude of the errors appears to be a function of the spatial resolution of the map, the original size of the land-cover classes, and the spatial patterns of the classes.