The study took the Greater Khingan Mountains as the study area to construct TS-NDVI feature space by the land surface temperature (T-s) and the normalized difference vegetation index (NDVI), which were obtained by using MODIS synthesis product data MOD11/1 km and MOD13Q1. And on this condition, the calculation of the temperature vegetation dryness index (TVDI) was regarded as the soil moisture index, and the paper verified the relevances between the soil moisture of Greater Khingan mountains from March 2008 to 16, April and forest fire with MOD14/1 km, on the base of which, TDVI was included into the discussion category of forest fire insurance premium.
