: The incresing number of sensor type for terrestrial remote sensing has necessitated supplementary efforts to evaluate and standardize data from the different aailable sensors.Accurate and up-to-date global land cover data sets are necessary for various global change research studies including climatic change, biodiversity conservation, ecosystem assessment, and environmental modeling.Therfore using of data numeral product of sensor with different resolution and specteral bands,can different data for evalution and range management for users generate. The aims of the present research was: Comparison maps vegetation production of sensors IRS-WiFS and MODIS on Semirom and Brojen regions. Various preprocessing, including image rectification was applied with geo-referencing of the image to a registered image with a RMSe 0.5 pixel for sensore MODIS and RMSe .35 pixel for sensore IRS-WiFS. The atmospheric and topographic corrections were applied using subtraction of dark objects method and the Lambert method accordingly. Image processing including FCC, PCA, vegetation indices and supervised classification were employed to produce the land use and pasture production maps. Field data collection were started on June 2005 on 800,000 ha and prolonged about 4 months. Various vegetation types were sampled using stratified random sampling method. 20 random sampling points were selected and the percent cover was estimated. Tow MODIS data sets and tow IRS-WiFS data sets were used for this study. Digital data and the indices maps were used as independent data and the field data as dependent variables. The resulted models were processed on and the resulted images were categorized in 5 classes. Finally the produced maps were controlled for their accuracies. Also post classification method was used to determine change detections.Map land-use of MODIS data sets produced with 9 category and accuracy 79.61 and with Kappa 72.6, and map landuse ofIRS-WiFS produced with 8 category and accuracy 90.2 and with Kappa 77.9 .Result showed maps land cover produced with IRS-WiFS data setes have very high accuracy land cover producced with MODIS data setes.
