IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying
Song, Xiaoyan1,2; Wang, Genxu1; Hu, Zhaoyong1; Ran, Fei1; Chen, Xiaopeng1,2
2018-12-10
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume644Pages:862-872
AbstractBoreal 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 postfire 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. (C) 2018 Elsevier B.V. All rights reserved.
KeywordSoil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem
DOI10.1016/j.scitotenv.2018.07.014
WOS KeywordPERMAFROST CARBON ; CLIMATE-CHANGE ; NITROGEN-FERTILIZATION ; TEMPERATURE-DEPENDENCE ; MICROBIAL BIOMASS ; NORTHEAST CHINA ; METHANE ; TUNDRA ; RESPIRATION ; ALASKA
Language英语
Funding ProjectNational Key Basic Research Program of China[2013CBA01807] ; National Natural Science Foundation of China[91547203] ; National Natural Science Foundation of China[41271224] ; National Natural Science Foundation of China[41671206]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000445164000090
Funding OrganizationNational Key Basic Research Program of China ; National Natural Science Foundation of China
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23432
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorWang, Genxu
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Song, Xiaoyan,Wang, Genxu,Hu, Zhaoyong,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,2018,644:862-872.
APA Song, Xiaoyan,Wang, Genxu,Hu, Zhaoyong,Ran, Fei,&Chen, Xiaopeng.(2018).Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying.SCIENCE OF THE TOTAL ENVIRONMENT,644,862-872.
MLA Song, Xiaoyan,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(2018):862-872.
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