The Research Of Shenyang Ma'er Mountain Forest Community Surface Fuel And Fire Fire Danger Rating

Forest fuel combustion is the material basis of forest,the forest fuel is the main body of the fire behavior,the research of forest fuel can be provide important theoretical basis to divided into forest fire danger grade,forecast forest fire,scientific management of forest fuel.In this paper,investigate the main types of forests,surface fuel moisture content,load capacity,combustibility and different types of fire danger grades in Shenyang Ma'er mountain scenic area.It provides an important basis for scientific management of surface combustible in the area and the control of forest fire.The results are as follows:(1)Use the way of check to investigate the forest type and the types of fuel for each forest type of Shenyang Ma'er mountain scenic area,and the results show that:There are 12 main types of forest in Shenyang Ma'er mountain,for respectively,Chinese pine artificial pure forest,Pine and oak mixed forest,East-liaoning oak pure forest,Black birch and East-liaoning oak mixed forest,Oak and hazel mixed forest,Mongolian oak and Larch mixed forest,Oriental white oak pure forest.Fraxinus rhynchophylla pure forest,Siberian Apricot pure forest,Poplar pure forest,Miscellaneous forest,larch pure forest,Oriental white oak and hazel shrubbery mixed forest,Oriental white oak and hazel shrubbery mixed forest.Different levels of combustible materials are different in various types of forest,and the shrub layer and the herb layer are not consistent.(2)Use the sampling method to investigate the relationship between surface fuel moisture content,load capacity and conditions of forest and ground conditions for each forest type of scenic area.The results showed that the moisture content of the fuel in different forest types was very different.The average moisture content of Chinese pine artificial pure forest,Black birch and East-liaoning oak mixed forest,Fraxinus rhynchophylla pure forest is high,and the average moisture content of Oriental white oak pure forest,Poplar pure forest,Miscellaneous forest is low.(3)Use the external investigation and weighing method to investigate the main forest type surface fuel load capacity of Shenyang Ma'er mountain scenic area.The results showed that,in addition to Chinese pine artificial pure forest,The amount of fuel load on the unit area of several other types of forest is more than 15t/hm2,which is generally a heavy load.In the forest divisor,the load volume of the surface combustible was negatively correlated with the density of the forest and the increase of the forest age.In the vertical factor,the load volume of the surface combustible is the highest in south slope and the lowest in northern slope.The slope is negatively correlated with the amount of fuel load on the surface.(4)Use the indoor instrument method to determine the burning properties of the forest surface in scenic area.The results show that:compared between the 12 forest types,the most flammable forest types is Chinese pine artificial pure forest,the least flammable are Poplar pure forest and Apricot pure forest,more flammable are Oriental white oak and hazel shrubbery mixed forest,Chinese pine and East-liaoning oak mixed forest,East-liaoning oak pure forest,Mongolian oak and Larch mixed forest,Oriental white oak pure forest,Fraxinus rhynchophylla pure forest,Black birch and East-liaoning oak mixed forest,Miscellaneous forest,Larch pure forest.(5)Use the fuzzy cluster analysis method,forest type in Ma'er mountain is cluster unit,choose the influence factors like fuel load,moisture content,combustion performance and so on which were closely rated to combustion as the cluster factor,divide the forest types into different grade of fire danger(?-?-?-?)in this area,the results are as follows:the comprehensive forest fire danger rating of each forest type:there is one forest type belongs to grade ? which is the most flammable,named Chinese pine artificial pure forest.Three forest types for grade ?,they are Chinese pine and East-liaoning oak mixed forest,Oriental white oak and hazel shrubbery mixed forest,Miscellaneous forest.Six forest types for grade III,they are East-liaoning oak pure forest,Mongolian oak and Larch mixed forest,Oriental white oak pure forest,Fraxinus rhynchophylla pure forest,Black birch and East-liaoning oak mixed forest,Larch pure forest.Three forest types for Grade ?,they are Siberian Apricot pure forest,Poplar pure forest.