Load of forest surface dead fuel in Huzhong area of Daxing'''' anling Mountains and relevant affecting factors
大兴安岭呼中林区森林死可燃物载量及其影响因子

Forest surface dead fuel is the most important factor arousing forest fire.To understand the distribution of forest surface dead fuel load is of significance for forest fire prevention and fuel management.In this study,the forest region of Huzhong in Daxing'anling was selected as study area,and the load distribution of surface fuel in different forest types was compared based on the classification standard of 1 h,10 h and 100 h.The results showed that the load of dead fuel was the highest in Pinus sylvestris var.mongolica forest,and the lowest in Pinus pumila forest.The comparison of different Larix gmelinii types showed that the load of surface fuel was the highest in Vaccinium uliginosum-Larix gmelinii forest and the lowest in Sphagnum palustre-Ledum palustre-Larix gmelinii forest.Correlation analysis indicated that the load of surface dead fuel had significant positive correlations with average diameter and average height of trees,herbage coverage,and litter thickness,but significant negative correlations with slope and humus thickness.Multiple linear regression analysis indicated that the factors litter thickness,herbage coverage,and average height of trees could be used to better calculate the load of surface dead fuel in Larix gmelinii forest,which could be useful for providing scientific basis for forest dead fuel management and forest fire prevention.