Abstract:Data fusion technology is an important component of remote sensing technology. It is the important foundation in dynamic monitoring of land use. Different fusion algorithms should be chosen due to different application aims and data sources. Based on the application of IRS-P5/P6 images in land use dynamic monitoring system, fusion experiment has been done by using three methods, such as multiplication, brovey transform and Hue-Intensity-Saturation. From the aspects of qualitative and quantitative, the fusion quality is compared. It is regarded that Hue-Intensity-Saturation is suitable for data fusion of IRS-P5/P6 images in land use dynamic monitoring system.