摘要
根据吉林省1969—2010年间的森林火灾资料数据统计分析,容易发生重特大森林火灾的林型主要是柞树林、阔叶混交林和针阔混交林。阔叶混交林的特征是柞树占4成以上、混有白桦或混有杨树和白桦,并且该林型疏密度为0.5～0.7,或者林龄在11～30 a之间;针阔混交林的特征是含有柞树或含有红松和柞树,并且疏密度为0.7～0.8,或者林龄在1～40 a之间;柞树林的特征是疏密度为0.5～0.7,或者林龄在1～40 a之间。
Through computing and analyzing, the main forest types of gravely extra large forest fires are mongolian oak forests, mixed broad-leaved forests and coniferous broad-leaved forests. In the characteristics of mixed broad-leaved forests, mon- golian oak accounts for more than 40% including Betula alba or the combinations of Populus and B. alba with the degree of closeness of 0.5-0.7 or with the stand age of 11-30 in the mixed broad-leaved forests. In the characteristic of conifer- ous broad-leaved forests, there is mongolian oak or the combinations of Korean pine and mongolian oak with the degree of closeness of 0.7-0.8 or with the stand age of 1-40 in the coniferous broad-leaved forests. In the mongolian oak forests, the degree of closeness is 0.5-0.7, or the stand age is 1-40.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2013年第9期80-82,共3页
Journal of Northeast Forestry University
基金
国家自然科学基金资助项目(30900189)
吉林省科技发展计划项目(20100582和20121820)
吉林省教育厅项目(吉教科合字【2009】第402号和吉教科合字【2013】第158号)资助
教育部新世纪优秀人才支持计划(NCET-12-0726)资助
关键词
吉林省
森林火灾
林型特征
林龄
Jilin Province
Forest fires
Forest type
Characteristics
Stand age
