Abstract:

Based on the field investigation,sampling and the laboratory experiment,the ignition moisture content and spread moisture content of 30 tree and bush species leaves were analyzed by applying factor analysis and cluster analysis.The ordering of combustibility and spread degree of those fuels were given out.The result shows that those 11 species of Populus davidiana,Acer saccharum,Rhamnus davurica,Acanthopanax senticosus,Betula nigra,Deutzia amurensis,Gleditsia japonica,Ribes mandshuricum,Sambucus uilliamsii,Philadelphus schrenki,Catalpa ovata have relatively higher fire resistant ability.While those 10 specie of Caragana arborescens,Malus baccata,Hemiptelea davidii,Euonymus alatus,Pterocarya stenoptera,Viburum burejaeticum,Pyrus ussuriensis,Crataegus pinnatifida,Euonymus maackii,Pinus tabulaeformis have relatively lower fire resistant ability.Those results can have a help to the selection of fire-resistant species.

Key words: forest fuel, ignition, tree leaves, spread, moisture content