The surface wreathing produces coatings, the coating formed form adherence of wind-bore dust, the cemented coating and attachments on rock surface are the importance keys of reflectance spectra of the terrain. This research had carried on the weathering and fresh of typical mineral rock, desert-varnish and lichens by the ASD field spectral radiometer, X-ray fluorescence analysis and microscopic photographs observation in Baogutu western Junggar, Xinjiang. The study found that: most of the region had weathered rock surface, which mainly happened the physical weathering, but few of rock surface had the chemical weathering, which changed the mineral composition and content; in visible wavelengths, the wavelength was changed by desert-varnish, however, in the short wavelengths especially its composite band and CO3-2, the spectral form didn't change only on different reflectance, which did not affect the high spectrum detection of rock minerals; spectral characteristics of lichen shows basic spectral characteristics of vegetation, completely changed the rock substrate surface spectral curve, and it should be noted that the interference effect of lichen on mineral lithology in hyperspectral remote sensing.
Wang Shanshan Zhou Kefa Zhou Shuguang Chen Yichao. Effects of weathering, desert-varnish and lichens of rock surface on hyperspectral remote sensing[J]. Chinese Journal of Geology, 2018, 53(2): 739-748.