Retrieval of Selenium Content in Black Soil Based on Airborne Hyperspectral Data
ZHAO Ning-bo;ZHAO Ying-jun;QIN Kai;ZHANG Dong-hui;YANG Yue-chao;National Key Lab of Remote Sensing Information and Image Analysis Technology,Beijing Research Institute of Uranium Geology;
Selenium is an essential trace element in human body.The study of selenium content in soil is of great significance to regional land quality and crop economic value.In order to evaluate the distribution of selenium content in soil quickly and accurately,the Airborne Hyperspectral technology was introduced to carry out the inversion of soil selenium content.Based on the correlation and quantitative relationship between the selenium content and the spectral reflectance,a regression model was constructed based on the correlation and quantitative relationship between the selenium content and the spectral reflectance.The remote sensing inversion of the soil selenium content in the study area was carried out by using the CASI/SASI aeronautical hyperspectral data,the ASD ground spectral data and the selenium content data of the soil samples by using the CASI/SASI aeronautical hyperspectral data,the ground spectral data and the soil sample selenium content data.The model determines the coefficient of 0.721.The inversion results are verified by geochemical data.The comparison results show that the inversion data is reliable.
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