Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying
XiaoyanSong1,2; Genxu Wang1; Zhaoyong Hu1; Fei Ran1; Xiaopeng Chen1,2
第一作者单位Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China ; University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
通讯作者单位Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
通讯作者Genxu Wang
2018
发表期刊Science of The Total Environment
ISSN0048-9697
EISSN1879-1026
卷号644期号:10页码:862-872
文章类型Article
产权排序1
摘要Boreal forests store large amounts of organic carbon and are susceptible to climate changes, particularly rising temperature, changed soil water and increased fire frequency. The young post-fire ecosystems might occupy larger proportions of the boreal forests region with the expected increases in fire frequency in the future and change the carbon (C) balance of this region. However, it is unclear how soil C fluxes in the post-fire boreal forest response to the climate changes. Therefore, a two-year field experiment was conducted in a boreal forest to investigate the effects of fire on the soil C (CO2 and CH4) fluxes and the responses of these fluxes to simulated warmer and drier climate conditions. The results showed that the boreal forest recovered form wildfire 7–8 years had higher soil CO2 flux than the mature forest. Furthermore, the treatments of warming, drying and the combination of warming and drying increased growing season cumulative soil CO2 flux in the post-fire forest by 15.8%, 20.4% and 34.2%, respectively. However, the boreal forest soil changed from a weak CH4 source to a weak CH4 sink after fire disturbance. Although CH4 absorption increased by warming and drying treatments, the interaction of warming and drying led to a decrease in soil CH4 uptake. The results indicated that the post-fire soil showed CO2 and CH4 fluxes with a greater global warming potential than before burning and that the global warming potential of the soil gas fluxes further increased by warming and drying. The predictive power of models of C cycle-climate feedbacks could be increased by incorporating the distinct ecosystem following fire with permafrost degradation and climate change across the boreal zone.
关键词Soil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem
DOI10.1016/j.scitotenv.2018.07.014
收录类别EI
语种英语
EI入藏号Accession number: 20182905563602
引用统计
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/23432
专题山地表生过程与生态调控重点实验室
作者单位1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China;
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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XiaoyanSong,Genxu Wang,Zhaoyong Hu,et al. Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying[J]. Science of The Total Environment,2018,644(10):862-872.
APA XiaoyanSong,Genxu Wang,Zhaoyong Hu,Fei Ran,&Xiaopeng Chen.(2018).Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying.Science of The Total Environment,644(10),862-872.
MLA XiaoyanSong,et al."Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying".Science of The Total Environment 644.10(2018):862-872.
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