Abstract:
To explore the surface albedo responses to forest fires in the Great Xing’an Range, China, this study investigated the forest fire occurring in the zone under the supervision of the Jinhe Forestry Bureau on May 5, 2003. The changes in the surface albedo after the forest fire were analyzed based on the global land surface satellite (GLASS)-derived surface albedo and leaf area index (LAI) data. The results indicate that the surface albedo in the burned zone decreased in the short term (1 a) but increased significantly at a rate of 0.001 2/a in the mid- to-long term (10 a). The increasing trend in the surface albedo was slightly influenced by contemporaneous climate changes and human activities but was closely associated with the vegetation restoration process after the forest fire. Moreover, the increase in the surface albedo in the burned zone was highly correlated with LAI increase (
r=0.682,
p<0.01). Additionally, the vegetation masking effect further enhanced the increasing trend in surface albedo in the burned zone during the snow-covered period. Overall, the results of this study deepen the understanding of spatiotemporal variations in the surface albedo, laying a foundation for thoroughly assessing the influence of forest fires on global climate changes.