Abstract
Fire is a major disturbance factor in boreal forest ecosystems. Research on fire regimes is important for understanding fire disturbance and for taking a scientific approach to fire management in the Daxing’anling region. Fire scars in Daxing’anling were extracted from NOAA/MODIS satellite remote sensing data for the period 1987-2010. The paper analyzed the spatial-temporal characteristics of the fire scars and the relationship between burned areas and forest fire danger indexes. The results showed that the annual burned area had a significant correlation with fire danger indexes. The average annual burned area was 192,200ha during 1987-2010, and the fire scars were mainly distributed in the northern and eastern parts of the region. The fire cycle for the Daxing’anling region was 75 years. The fire scars were mainly located in coniferous and broadleaf mixed forests and larch forest. Mild, moderate and severe burned areas accounted for 45.3%, 37.0% and 17.7% of the total burned area, respectively.
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