IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Effects of topography and fire on soil CO(2)and CH4 flux in boreal forestunderlain by permafrost in northeast China
Song, Xiaoyan1,2; Wang, Genxu1; Ran, Fei1; Chang, Ruiying1; Song, Chunlin1,2; Xiao, Yao1,2
Corresponding AuthorWang, Genxu
2017-09-01
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume106Pages:35-43
SubtypeArticle
Abstract

Regional quantification of soil CO2 and CH4 fluxes in boreal forests remains difficult because of high landscape heterogeneity and fire disturbance coupled with a sparse measurements network. Most of the work focuses on the separate effects of fire or topography, and as a result, the spatial variability in the response of soil carbon flux to fire remains unclear. A two-year field experiment was conducted in the boreal forest of the DaXinganling Mountains to investigate the effects of topography (ridge and depression) and fire on soil CO2 and CH4 fluxes and to determine how the effects of fire vary with topography. The results showed that soil carbon flux to the atmosphere in this region was dominated by soil CO2 flux. Topography had significant effect on soil carbon fluxes, with higher soil CO2 emissions and CH4 uptakes on the ridge than in the depression, whether burned or not, and these topographical differences were amplified by fire. Fire significantly increased soil CO2 emissions and CH4 uptakes both in the depression and on the ridge. However, the factors that determined soil CO2 and CH4 fluxes and the extent of the response to fire varied with topography. Although the depression released less soil carbon to the atmosphere, the increase in Q(10) of soil CO2 flux and the permafrost degradation following fire in the depression indicated stronger positive feedbacks to climate warming. To concluded, topography regulated the effects of fire on soil carbon fluxes and might control the post-fire soil carbon flux feedbacks to climate warming. Therefore, large-scale predictions of soil carbon fluxes in response to fire in the boreal region must explicitly incorporate topographic features. (C) 2017 Elsevier B.V. All rights reserved.

KeywordSoil Carbon Dioxide Flux Soil Methane Flux Topography Fire Boreal Foresta
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.ecoleng.2017.05.033
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Engineering
Indexed BySCI
WOS KeywordARCTIC COASTAL TUNDRA ; TEMPERATURE-DEPENDENCE ; METHANE FLUXES ; INTERIOR ALASKA ; CARBON STORAGE ; FOREST ; RESPIRATION ; LANDSCAPE ; THAW ; CO2
Language英语
Quartile3区
TOP
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS IDWOS:000405512600005
Funding OrganizationNational Key Basic Research Program of China(201201A0113071) ; National Natural Science Foundation of China(41271224 ; 416712061)
Accession numberAccession number:20172203720361
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18689
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, 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
Recommended Citation
GB/T 7714
Song, Xiaoyan,Wang, Genxu,Ran, Fei,et al. Effects of topography and fire on soil CO(2)and CH4 flux in boreal forestunderlain by permafrost in northeast China[J]. ECOLOGICAL ENGINEERING,2017,106:35-43.
APA Song, Xiaoyan,Wang, Genxu,Ran, Fei,Chang, Ruiying,Song, Chunlin,&Xiao, Yao.(2017).Effects of topography and fire on soil CO(2)and CH4 flux in boreal forestunderlain by permafrost in northeast China.ECOLOGICAL ENGINEERING,106,35-43.
MLA Song, Xiaoyan,et al."Effects of topography and fire on soil CO(2)and CH4 flux in boreal forestunderlain by permafrost in northeast China".ECOLOGICAL ENGINEERING 106(2017):35-43.
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