Research On Forest Fuel Thermal Analysis In Maoer Mountain

Forest fuel is the material basis of forest fire, the major factor of fire diffusion, and is also the theory foundation of forest fireproofmg. The introducing of thermal analysis into the forest fuel research can help discover the thermal decomposition process more directly and accurately, at the same time, can help discuss the thermal decomposition principle deeply. The parameters concluded by the thermal analysis technology (frequency factor A, Activation energy E) can be used as basic data that are more accurate for building forest fuel model and forest fire model and also some other kind of scientific researches. It is of a guiding significance for forest fire forecast, fire fighting direction, use of fire, biological fireproofing and some other aspects.This article use the Thermobalance technology and the differential thermal analysis technology, mensurate 20 kinds of forest fuel in Maoer Mountain, in order to achieve thermal decomposition kinetics parameter E from the TG-DTA curve as a basis for analysis of the fuel combustibility. As for the difference between fuel thermal decomposition processes, we separate them into two kinds for compare. The results are as below:1. This kind of trees their thermal decomposition process includes desiccation, pre carbon, carbon, and burning four periods. During this process Populus davidiana, Populus koreana, Ulmus macrocarpa, Phellodendror, Quercus mongolica, Lonicera turczaniniwii are of low thermal stability, and likely to bum; while Fraximu mandshurica, Betula platyphylla, Tilia amurensis, Sorbaria sobifolia, Lonicera maackii have high thermal stability, are unlikely to burn. In this kind of fuel, Picea koraiensis, Pinus koraiensis, Pinus sylvesstris, Acer mono, Acer ginnala are combustible arbors; and Ulmus macrocarpa, Tilia amurensis are apyrous arbors. Philadelphus schrenkii and Acanthopanax senticosus are combustible shrubbery.2. The second kind their thermal decomposition process includes three different periods: desiccation, carbon and burning. Picea koraiensis, Pinus koraiensis, Pinus sylvesstis, Acer mono are of low thermal stability, and are likely to burn; while Tilia mandshurica, Philadelphus schrenkii, Ulmus pumila, Acanthopanax senticosus, Acer ginnala in the whole process have high thermal stability, and are unlikely to burn. In this kind of fuel Populus davidiana, Populus koreana, Ulmus pumila, Phellodendror, Quercus mongolica are combustible arbors; while Betula platyphylla, Tilia mandshurica, Fraximu mandsshurica are apyrous arbors. Lonicera turczaninowii is combustible shrubbery; while Sorbaria Sobnifolia and Lonicera maackii are apyrous shrubbery.