From the point of view of future forecasting of periods with higher danger of fire initiation and identification of potential areas with fire initiation, it is important to know the key parameters of fuel which influence a fire. The main aim of the diploma thesis is identification and comparison of parameters of litter of selected woody plants which have a fundamental influence on fire spreading, especially on its initiation, promotion and further spreading. The most significant key parameter in identification of danger of forest fire initiation is the volume of fuel moisture. The object of the diploma thesis research are biomes of boreal conifer forests, deciduous forests and plants. The results of the finding have indicated that litter moisture significantly lowers initiation, intensity and subsequent fire spreading. Pine litter produces, due to small measures of needles, well-rammed and non-aerated litter. This litter can accumulate more than double the volume of water in comparison with deciduous litter. Consequently, in conditions with high moisture it is very difficult to catch fire. Deciduous trees produce aerated litter (containing an oxidation element), which is able to accumulate less volume of moisture, it dries off better, and for that reason, in conditions with high moisture deciduous tree litter catches fire easier. In case of dried fuels, the amounts of initiatory energy required for setting coniferous and deciduous vegetation on fire do not differ significantly. Hard dried oak litter has the highest danger of fire initiation and it is the easiest to catch fire. Pine litter has, thanks to the high volume of gum and vaporizing substances, much higher amounts of heat release speed, cumulative released heat, combustion heat and heating power, therefore it poses the highest danger from the point of view of intensity and fire spreading.