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应用生态学报 ›› 2012, Vol. 23 ›› Issue (11): 3157-3163.

• 研究报告 • 上一篇    下一篇

气候变化背景下黑龙江大兴安岭林区夏季火险变化趋势

杨光1,2,舒立福2,邸雪颖1**   

  1. (1东北林业大学林学院, 哈尔滨 150040; 2中国林业科学研究院森林生态环境与保护研究所/国家林业局森林保护学重点开放性实验室, 北京 100091)
  • 出版日期:2012-11-18 发布日期:2012-11-18

Change trends of summer fire danger in Great Xing’an Mountains forest region of Heilongjiang Province, Northeast China under climate change.

YANG Guang1,2, SHU Li-fu2, DI Xue-ying1   

  1. (1School of Forestry, Northeast Forestry University, Harbin 150040, China; 2State Forestry Administration Key Open Laboratory of Forest Protection/Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China)
  • Online:2012-11-18 Published:2012-11-18

摘要: 采用Delta、WGEN降尺度方法和加拿大森林火险天气指标,分析了1966—2010年黑龙江大兴安岭林区夏季火灾变化特征,预估了2010—2099年夏季森林火险变化趋势,分析了夏季森林火灾与春、秋季森林火灾的差异,并提出了基于火环境的夏季森林火灾防控策略.结果表明: 气候变暖背景下,2000—2010年研究区夏季森林火灾呈高发态势.在可预期的未来,2010—2099年研究区夏季森林火险比基准年(1961—1990年)增加34%,增幅大于春、秋季森林火险.A2a和B2a情景下,2010—2099年研究区夏季森林火险相对于基准年均呈升高趋势,且随着时间递推,森林火险增加的区域不断变广,增加的比重不断加大.到21世纪末,A2a情景下夏季森林火险与基准年相比增加近一倍,夏季高森林火险地区将贯穿整个研究区.夏季森林火灾在火源特点、森林可燃物属性和森林火险天气情况等方面都有别于春、秋季森林火灾,研究区应严管火源,严控可燃物载量,严抓中长期森林火险预报,以控制夏季森林火灾.

Abstract: By using Delta and WGEN downscaling methods and Canadian Forest Fire Weather Index, this paper analyzed the variation characteristics of summer fire in Great Xing’an Mountains forest region of Heilongjiang Province in 1966-2010, estimated the change trends of the summer fire danger in 2010-2099, compared the differences of the forest fire  in summer, spring, and autumn, and proposed the prevention and control strategies of the summer fire  based on the fire environment. Under the background of climate warming, the summer forest fire  in the region in 2000-2010 showed a high incidence trend. In foreseeable future, the summer forest fire  across the region in 2010-2099, as compared to that in the baseline period 1961-1990, would be increased by 34%, and the increment would be obviously greater than that of spring and autumn fire. Relative to that in 1961-1990, the summer fire  in 2010-2099 under both SRES A2a and SRES B2a scenarios would have an increasing trend, and, with the lapse of time, the trend would be more evident, and the area with high summer fire would become wider and wider. Under the scenario of SRES A2a, the summer fire  by the end of the 21st century would be doubled, as compared to that in 1961-1990, and the area with high summer fire  would be across the region. In the characteristics of fire source, attributes of forest fuel, and fire weather conditions, the summer forest fire  was different from the spring and autumn forest fire, and thus, the management of fire source and forest fuel load as well as the forest fire forecast (mid-long term forecast in particular) in the region should be strengthened to control the summer forest fire.