草业学报2016，Vol.25Issue(4)：16-25,10.DOI:10.11686/cyxb2015286
内蒙古草原火的时空动态特征研究
Temporal and spatial dynamics of grassland fires in Inner Mongolia
摘要
Abstract
Analyses of a dataset for grassland fires in Inner Mongolia from 1981 to 2005 showed that there were 3142 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.Grade Ⅲ and Ⅳ fires accounted for the majority (81.17%)of grassland fires with known causes.The number of grassland fires generally decreased o-ver time,but tended to increase in the early 21st 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 sea-sons,human-caused fires tended to occur between 9:00 am to 16:00 pm,while lightning-caused fires mainly started between 13:00 pm and 17:00 pm.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 9:00 am and 16:00 pm.关键词
内蒙古/草原火/时空动态Key words
Inner Mongolia/grassland fire/spatial and temporal dynamics引用本文复制引用
周怀林,王玉辉,周广胜..内蒙古草原火的时空动态特征研究[J].草业学报,2016,25(4):16-25,10.基金项目
公益性行业（气象）科研专项经费项目（GYHY201406034）资助。 （）
