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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.
Forest fires are important disturbances of natural ecosystems and release a large amount of greenhouse gases during the combustion process.With the global temperature rising, forest fires have a more frequent trend.According to statistics of forest fires in Zhejiang Province from 1991 to 2006 and Zhejiang Province, the emission factor method and emission ratio method were used to analyze the annual average greenhouse gas (GHG) emissions from forest fires in Zhejiang Province.The results showed that average annual releases of CO2, CO, methane (CH4) from forest fires in Zhejiang Province, And non-methane hydrocarbons (NMHC) were 127930, 7672.8, 3098.7 and 1475.5 t, respectively. The average annual biomass consumption and carbon loss were 86148.1 and 38766.7 t, respectively, which had an impact on the regional carbon balance.