Emissions Released by Forest Fuel in the Daxing’an Mountains, China

The large amounts of emissions released by forest fires have a significant impact on the atmospheric environment, ecosystems, and human health. Revealing main components fuel under different combustion states is great importance to evaluate ecological environment. Here, self-designed biomass system was used simulate parts (i.e., branch, trunk, bark) five tree species branches, three layers surface dead litter layer, semi-humus humus layer) shrub species, in Daxing’an Mountains, Inner Mongolia. emission characteristics gas pollutants CO, CO2, HC, NOx) PM2.5 two smoldering flaming, along with correlation ratio among factors, were measured. results show that average trees from state are higher than those flaming state, while shows opposite. trees, shrubs, ordered high low as follows: CO2 > CO HC NOx PM2.5; NOx, indicating primary both conditions mainly due dependent state—flaming promotes PM2.5. bark, trunks Quercus mongolica significantly other four bark branch trunk. This study will help further understand environment ecosystems Northern China.