【摘要】 森林火灾是自然生态系统重要的干扰因子,在燃烧过程中释放大量的温室气体.随着全球温度持续升高,林火有更频发的趋势.根据1991—2006年浙江省森林火灾统计资料和浙江省各种森林类型地上生物量数据,采用排放因子法和排放比法,分析浙江省年均森林火灾温室气体排放量.结果表明:浙江省森林火灾平均每年释放CO2、CO、甲烷(CH4)和非甲烷烃(NMHC)分别为127930、7672.8、3098.7和1475.5 t;年均消耗生物量和碳损失量分别为86148.1和38766.7 t,对区域碳平衡有一定影响.更多还原

【Abstract】 Forest fire is an important disturbance factor of natural ecosystem,which can release great amount of greenhouse gases.With the persistent global warming,forest fire tends to happen more frequently.Based on the statistical data of forest fires and the biomass data of dominant forest types in Zhejiang Province in 19912006,the annual greenhouse gases emission from forest fires in the Province was estimated by using emission factors and emission ratio.The results showed that the annual emissions of CO2,CO,CH4,and non-methane hydrocarbon(NMHC) from forest fires were 127930,7672.8,3098.7,and 1475.5 t,and the amounts of annually consumed biomass and carbon were 86148.1 and 38776.7 t,respectively,suggesting that forest fire had definite effects on the regional carbon budget.更多还原