北京西山林场火烧迹地植被更新及可燃物负荷量研究  

The Forest Regeneration and Fuel Load on the Burned Areas of Beijing Xishan Forest Farm

作　　者：刘晓东[1] 张彦雷[1] 金琳[1] 张子全[1] 刘晓双[1] 邱林芳 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]武警警种指挥学院,北京102202

出　　处：《林业资源管理》2011年第2期36-41,共6页Forest Resources Management

基　　金：国家"十一五"科技支撑计划项目课题"森林火灾监测预警与防控技术研究"(2006BAD04B05);"天然林保育恢复与可持续经营技术研究"(2006BAD03A04)

摘　　要：在野外调查的基础上,对比研究了北京西山林场4种林分类型火烧迹地与对照林地上植被更新及可燃物负荷量的差异,对更新林分的潜在燃烧性进行了分析。所选择林分为侧柏林、油松林、刺槐林与白蜡林,其中侧柏林和油松林为2003年过火林分,刺槐林和白蜡林为2006年过火林分。火烧后,侧柏林采用人工更新,其它3种林分采用天然更新,研究结果表明:人工更新的火烧迹地上(侧柏林)植被多样性指数减少,总可燃物负荷量增加;而天然更新火烧迹地上(油松林、刺槐林及白蜡林)植被多样性指数增加,但总可燃物负荷量减少;火烧迹地可燃物负荷量的多少与更新时间成正比。总体而言,火烧更新使林地上易燃可燃物负荷量增加,难燃可燃物负荷量减少,从而使更新后林分的潜在燃烧性增加。Based on the field investigation data,the post-fire forest regeneration and fuel load in Platycladus orientalis forest、Pinus tablaeformisforest forest、Robinia pseudoacacia forest and Fraxinus chinensis forest were studied in Beijing Xianshan Forest Farm.In which,the first two forests was burned in 2003 and the other two stands burned in 2006,also,the artificial regeneration mode was used in the first forest and the natural regeneration mode was used in other three stands,and the potential combustibility of regeneration forests was discussed.The results showed that the post-fire biodiversity index decreased,but the total fuel load increased in the Platycladus orientalis forest compared with the unburned site;on the contrary,the biodiversity index increased,and the total fuel load decreased in the other three forest types compared with the unburned sites.The accumulation of post-fire fuel load indicated the positive relation with the regeneration time;also,the flammable fuel load increased after burning,thus the potential combustibility is increased in the post-fire forest.

关 键 词：火烧迹地 可燃物负荷量 更新方式 多样性指数 

分 类 号：S754[农业科学—森林经理学] S718.556[农业科学—林学]