Remote Sensing for Natural Resources >
Analysis of surface albedo responses to forest fires in the Great Xing’an Range, China
Received date: 2023-10-31
Revised date: 2024-02-05
Online published: 2026-06-03
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.
CHEN Xuejiao , ZHANG Kaitong , WANG Jiao , WANG Munan , QU Ying . Analysis of surface albedo responses to forest fires in the Great Xing’an Range, China[J]. Remote Sensing for Natural Resources, 2025 , 37(2) : 212 -219 . DOI: 10.6046/zrzyyg.2023322
图3 森林火灾发生前后年份(2002年和2003年)火烧迹地非积雪覆盖期地表反照率和LAI随时间变化Fig.3 Temporal changes of surface albedo and LAI in the burned area before and after forest fire (2002 and 2003) during non-snow covered period |
图7 2002—2013年非积雪覆盖期地表反照率和LAI的相关关系Fig.7 Correlation between surface albedo and LAI during non-snow cover period from 2002 to 2013 |
表1 2002—2013年地表反照率与LAI的相关系数Tab.1 Correlation coefficients between surface albedo and LAI from 2002 to 2013 |
| 年份 | 相关系数r | 年份 | 相关系数r |
|---|---|---|---|
| 2002年(火灾发生前) | 0.797**① | 2008年 | 0.916** |
| 2003年 | 0.733** | 2009年 | 0.853** |
| 2004年 | 0.923** | 2010年 | 0.781** |
| 2005年 | 0.772** | 2011年 | 0.883** |
| 2006年 | 0.816** | 2012年 | 0.865** |
| 2007年 | 0.805** | 2013年 | 0.944** |
①**代表相关分析结果为99%置信。 |
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