بررسي عوامل موثر بر عدم كارايي فني بهره برداران سيركار: مطالعه موردي در استان همدان

An investigation on preparing of the soil salinity map using correlation method between imagery and soil salinity data in the Qazvin plain

Soil salinity and it’s development in the sarrounding lands are the main problem which should be prevented by good management . The first step is recognition and then preparing soil salinity map. In this paper an attempt made is to use the correlation method with ancillary data such as satellite and laboratory analysis of 236 soil samples data in the Qazvin plain. In the first blush, an EC point map was prepared. Then this point map was crossed with every ETM images. Finally the digital numbers of every sample points was extracted. In this connection a high correlation between band 7 ETM and EC sample points was detected, so in mapping the soil salinity, band 7 was used. Final accuracy of produced map by field control showed that the correlation method in mapping soil salinity can be recommended.