Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying
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 fi...
Published in: | Science of The Total Environment |
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Online Access: | http://ir.imde.ac.cn/handle/131551/24030 https://doi.org/10.1016/j.scitotenv.2018.07.014 |
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/24030 2023-05-15T17:57:21+02:00 Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying Song, Xiaoyan Wang, Genxu Hu, Zhaoyong Ran, Fei Chen, Xiaopeng 2018-12-10 http://ir.imde.ac.cn/handle/131551/24030 https://doi.org/10.1016/j.scitotenv.2018.07.014 英语 eng ELSEVIER SCIENCE BV SCIENCE OF THE TOTAL ENVIRONMENT http://ir.imde.ac.cn/handle/131551/24030 doi:10.1016/j.scitotenv.2018.07.014 Soil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem PERMAFROST CARBON CLIMATE-CHANGE NITROGEN-FERTILIZATION TEMPERATURE-DEPENDENCE MICROBIAL BIOMASS NORTHEAST CHINA METHANE TUNDRA RESPIRATION ALASKA Environmental Sciences & Ecology Environmental Sciences 期刊论文 2018 ftchinacadscimhe https://doi.org/10.1016/j.scitotenv.2018.07.014 2022-12-19T18:20:49Z 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 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. Report permafrost Tundra Alaska IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Science of The Total Environment 644 862 872 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Soil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem PERMAFROST CARBON CLIMATE-CHANGE NITROGEN-FERTILIZATION TEMPERATURE-DEPENDENCE MICROBIAL BIOMASS NORTHEAST CHINA METHANE TUNDRA RESPIRATION ALASKA Environmental Sciences & Ecology Environmental Sciences |
spellingShingle |
Soil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem PERMAFROST CARBON CLIMATE-CHANGE NITROGEN-FERTILIZATION TEMPERATURE-DEPENDENCE MICROBIAL BIOMASS NORTHEAST CHINA METHANE TUNDRA RESPIRATION ALASKA Environmental Sciences & Ecology Environmental Sciences Song, Xiaoyan Wang, Genxu Hu, Zhaoyong Ran, Fei Chen, Xiaopeng Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
topic_facet |
Soil carbon emissions Simulated warming Drying Permafrost Post-fire ecosystem PERMAFROST CARBON CLIMATE-CHANGE NITROGEN-FERTILIZATION TEMPERATURE-DEPENDENCE MICROBIAL BIOMASS NORTHEAST CHINA METHANE TUNDRA RESPIRATION ALASKA Environmental Sciences & Ecology Environmental Sciences |
description |
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 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. |
format |
Report |
author |
Song, Xiaoyan Wang, Genxu Hu, Zhaoyong Ran, Fei Chen, Xiaopeng |
author_facet |
Song, Xiaoyan Wang, Genxu Hu, Zhaoyong Ran, Fei Chen, Xiaopeng |
author_sort |
Song, Xiaoyan |
title |
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
title_short |
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
title_full |
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
title_fullStr |
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
title_full_unstemmed |
Boreal forest soil CO2 and CH4 fluxes following fire and their responses to experimental warming and drying |
title_sort |
boreal forest soil co2 and ch4 fluxes following fire and their responses to experimental warming and drying |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2018 |
url |
http://ir.imde.ac.cn/handle/131551/24030 https://doi.org/10.1016/j.scitotenv.2018.07.014 |
genre |
permafrost Tundra Alaska |
genre_facet |
permafrost Tundra Alaska |
op_relation |
SCIENCE OF THE TOTAL ENVIRONMENT http://ir.imde.ac.cn/handle/131551/24030 doi:10.1016/j.scitotenv.2018.07.014 |
op_doi |
https://doi.org/10.1016/j.scitotenv.2018.07.014 |
container_title |
Science of The Total Environment |
container_volume |
644 |
container_start_page |
862 |
op_container_end_page |
872 |
_version_ |
1766165766329073664 |