吉林省森林火灾释放碳量的时间变化规律

Time Variation of Carbon Emission from Forest Fires in Jilin Province

根据吉林省1969—2004年的森林火灾统计数据,计算出吉林省森林火灾年均释放碳22004.38～29339.17t,约占全国年均森林火灾排放碳的1.05%。用排放比法得出吉林省年平均森林火灾释放的CO2、CO、CH4量分别为72614.45～96819.27、5283.01～7044.02和1784.40～2379.20t。吉林省森林火灾碳和含碳气体释放最多的月份是9月,占总释放量的60.6%,其次为10、5和4月,分别占总释放量的16.1%、11.4%和9.8%。吉林省森林火灾碳和含碳气体释放最多的时间段是13:00—13:59,占总释放量的31.4%,其次是14:00—14:59、15:00—15:59和11:00—11:59,分别占总释放量的18.7%、16.4%和16.0%。

The mean annual carbon emissions from forest fires in Jilin Province is estimated to range between 22 004.38 t and 29 339.17 t, accounting for 1.05 percent of the total national emissions, based on the forest fire data from 1969 to 2004. The annual emissions of CO2 , CO and CH4 from forest fires every year in Jilin Province range from 72 614.45 t to 96 819.27 t, 5 283.01 t to 7 044.02 t and 1 784.40 t to 2 379.20 t, respectively. Carbon and carbonaceous gas emissions from forest fires are the most in September, making up about 60.6 percent of the total, and then followed by October （ 16.1 percent）, May （11.4 percent） and April （9.8 percent）. Carbon and carbonaceous gas emissions from forest fires are the most at 13：00--13：59, accounting for about 31.4 percent of the total, and then followed by 14：00--14：59 （18.7 percent）, 15：00 --15：59 （16.4 percent） and 11：00--11：59 （16.0 percent）.