摘要
1950—2008年间江西省年均发生森林火灾762次、年均过火面积1.578×104hm2.本文利用江西省森林火灾统计数据,结合气象、森林分布和历次森林清查数据,分析了该省林火的特征,估算历年的林火碳释放量和碳转移量.结果表明:1950—2008年江西省森林火灾导致的森林生物量总损失约61.155 Tg,活生物量碳库损失约30.993 Tg C,占全省植被碳库的15.92%.20世纪70年代以前林火生物量碳损失率约占1950—2008年生物量总碳损失的74.3%;90年代以后,年均林火生物量碳损失小于0.097 Tg C.森林火灾释放的CO2、CH4和CO气体分别为5.408 Tg、0.047 Tg和0.486 Tg,有22.436 Tg C活生物量碳进入土壤碳库.2008年初雨雪冰冻灾害引发的高频率次生林火灾害导致森林活生物量碳损失(0.463 Tg C)是前5年平均值(0.181 Tg C)的2.56倍.
The annual occurrence of forest fire in Jiangxi Province of China in 1950-2008 was averaged 762 times and covering 1.578×104 hm2.Based on the forest fire statistic data,meteorological data,forest inventory data,and other parameters,this paper analyzed the characters of forest fire in the province,and estimated its carbon release and transfer.In the province,the total forest biomass loss from forest fire in 1950-2008 was about 61.155 Tg,and the biomass carbon loss was about 30.993 Tg C, accounting for 15.92% of the vegetation carbon pool in the whole province.Before the 1970s,the biomass carbon loss occupied 74.3% of the total loss in 1950-2008,but after the 1990s,this loss decreased rapidly,with an annual average carbon loss less than 0.097 Tg C.The released CO2,CH4,and CO from the forest fire were about 5.408 Tg,0.047 Tg,and 0.486 Tg,respectively,and led to 22.436 Tg of biomass carbon transferred into soil carbon.The snow and ice disaster in the beginning of 2008 resulted in high frequency forest fire,and led to a 0.463 Tg biomass carbon loss,which was 2.56 times of the average value（0.181 Tg） in 2003-2007.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第9期2241-2248,共8页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(40971281)
国家重点基础研究发展规划项目(2009CB421105)
国家科技支撑计划项目(2006BAC08B00)资助
关键词
森林火灾
碳释放
碳转移
碳损失
江西省
forest fire
carbon release
carbon transfer
carbon loss
Jiangxi Province.
