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当前位置: 首页 > 文章 > 内蒙古草原火的时空动态特征研究 草业学报 2016,25 (4) 16-25
Position: Home > Articles > Temporal and spatial dynamics of grassland fires in Inner Mongolia Acta Prataculturae Sinica 2016,25 (4) 16-25

内蒙古草原火的时空动态特征研究

作  者：
周怀林;王玉辉;周广胜
单  位：
中国科学院大学生命科学学院;中国气象科学研究院;中国科学院植物研究所植被与环境变化国家重点实验室
关键词：
内蒙古;草原火;时空动态
摘  要：
基于1981-2005年内蒙古草原火的统计资料分析表明,内蒙古草原在25年间共发生草原火3142次,其中人为火占68.84%,雷击火占5.19%,未查明起火原因草原火占25.97%。草原火强度主要以Ⅳ、Ⅲ级草原火为主,占查明起火原因草原火的81.15%。草原火的年发生次数总体呈减少趋势,但在21世纪初有所增加,且春、秋季是草原火的高发期,其中人为火在4月份发生次数最多,而雷击火集中于5,6月份。草原人为火发生时段集中在9:00-16:00,雷击火主要在13:00-17:00。内蒙古草原火的发生区域呈东北向西南减少的条带状分布,其中位于呼伦贝尔市的新巴尔虎右旗、陈巴尔虎旗、牙克石市和鄂伦春自治旗是发生草原火次数最多的4个旗(县),累计发生次数在119~187次之间。研究结果表明,内蒙古草原火预防工作在区域上应集中在内蒙古中、东部和东北部地区,在时间上拟关注春季,特别是白天9:00-16:00时段。
译  名：
Temporal and spatial dynamics of grassland fires in Inner Mongolia
作  者：
ZHOU Huai-Lin;WANG Yu-Hui;ZHOU Guang-Sheng;State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences;College of Life Sciences,University of Chinese Academy of Sciences;Chinese Academy of Meteorological Sciences;
关键词：
Inner Mongolia;;grassland fire;;spatial and temporal dynamics
摘  要：
Analyses of a dataset for grassland fires in Inner Mongolia from 1981 to 2005showed that there were3142 grassland fires in the last 25 years.Among them,68.84% were caused by human activities,5.19% were caused by lightening,and 25.97% were attributed to unknown causes.GradeⅢandⅣfires accounted for the majority(81.17%)of grassland fires with known causes.The number of grassland fires generally decreased over time,but tended to increase in the early 21 st century.Spring and autumn were the main fire seasons,with more human-caused fires in April and more lightning-caused fires in May and June.During the main fire seasons,human-caused fires tended to occur between 9:00am to 16:00pm,while lightning-caused fires mainly started between 13:00pm and 17:00pm.In terms of geographical distribution,the number of grassland fires in Inner Mongolia decreased from the northeast to the southwest.The areas with the most fires were the Xin Barag Right Banner,the Chenbarhu Banner,and the Yakeshi-Oroqen Autonomous Banner,the total number of fires in these regions ranged from 119 to 187.These results indicate that the grassland fire prevention region in Inner Mongolia should include its central,eastern and northeast regions,and that efforts to detect and control fires should be made in the spring,especially between 9:00am and 16:00pm.

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