The effects of haze on the measured soil reflectance and drought monitoring models based on spectral feature space

In China, the haze is breaking out, and it cannot be solved in a few decade years. In this paper, we used haze simulation laboratory, simulated the particulate concentration through the control experiment, and measured the soil reflectance under the different the particulate concentration. Then we analyzed the effect of different hazes on the different soil moisture reflectance: the reflectance is relatively larger when the concentration increases, But when the concentration of the particles increases to 150 ug/m3, the curve becomes smooth. While the difference of the different soil moisture reflectance is decreasing. The different haze conditions (particulate matter concentration) makes the measured soil spectra curve change, so Some drought monitoring model based on spectral feature space(PDI, MPDI, SPSI, MSPSI) inevitably influence.