关键词: 火行为, 蔓延速率, 含水率, 床层高度, 压缩比, 蒙古栎

Abstract: The theory Ⅰ of quantification is used to deal with the correlations between site factors and biomass of litterfall and undergrowth plant in black locust stands in the Loess Plateau region of Shanxi province. The result shows that geomorphological type, soil type, slope direction, altitude, slope gradient, age and density of stand are important factors in determining the quantities of biomass.

Key words: fire behavior, spread rate, moisture content, fuel-bed depth, packing ratio, Quercus mongolica