استخدام تغاير قيم االانعكاسية الطيفية لفصل وحدات ترب منطقة الحويجة جنوب مدينة الفلوجة

Abstract

Soil spectral reflectance was studied for eight location selected to south Fulljua city reflect the difference of soil units status and geomorphologic location. The aim of this study was to demonstrate the effect of soil physical and chemical properties on soil spectral reflectance .Spectral indices such as Brightness index , Vegetation index , Ratio index , Shadow index , Biological crust index ,and Modified soil Adjusted Vegetation index were studied .The results showd spectral pands variant and B3,B5,B7 take high coefficient variation from (29.31-36.73) . Results will establish spectral signatures for each unit which helps to identify soil units using remote sensing data. Land sat 7(ETM+ ) reflectance values for each site differ at the several bands and also between sites at each band.Brightness index ,shadow index ,and Modified soil Adjusted vegetation index were the best spectral indices to reflect soil units differences.