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Experimental study on N2O and CH4 fluxes from the dark coniferous forest zone soil of the Gongga Mountain, China
Dong, YS; Qi, YC; Luo, J; Liang, T; Luo, KL; Zhang, S
Corresponding AuthorYunshe Dong
2003-03-01
Source PublicationSCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN1006-9313
Volume46Issue:3Pages:285-295
SubtypeArticle
AbstractThe static closed chamber technique is used in the study on the CH4 and N2O fluxes from the soils of primeval Abies fabri forest, the succession Abies fabri forest and the clear-cut areas of mid-aged Abies fabri forest in the Gongga Mountain from May 1968 to September 1999. The results indicate the following: (i) The forest soil serves as the source of atmospheric N2O at the three measurement sites, while the fluxes of CH4 are all negative, and soil is the sink of atmospheric CH4. The comparative relations of N2O emissions between the three sites are expressed as primeval Abies fabri forest > clear-cut areas > succession Abies fabri forest, and those of CH4 consumption fluxes are primeval Abies fabriforest > succession Abies fabriforest > clear-cut areas. (ii) Significant seasonal variations of N2O emission at various sites were observed, and two emission peaks of N2O occurr, during summer (July-August) and spring (February-March), whereas N2O emission is. relatively low in winter and spring (mid March-April). Seasonal variations of CH4 consumption at each measurement site fluctuate drastically with unclear regularities. Generally, CH4 consumption fluxes of succession Abies fabri forest and clear-cut areas are higher from mid May to late July but lower in the rest of sampling time, while the CH4 flux keeps a relatively high value even up to September in primeval Abies fabri forest. In contrast to primeval Abies fabri forest, the CH4 absorbabilities of succession Abies fabri forest and clear-cut areas of mid-aged Abies fabri forest are weaker. Particularly, the absorbability of the clear-cut areas is even weaker as compared with the other two sites, for the deforestation reduces the soil absorbability of atmospheric CH4. (iii) Evident diurnal variation regularity exists in the N2O emissions of primeval Abies fabri forest, and there is a statistic positive correlation between the fluxes of N2O and air temperature (R=0.95, n=11, alpha < 0.01), and also the soil temperature of 5-cm layer (R=0.81, n=11, alpha < 0.01), whereas the CH4 diurnal variation regularities are unclear and have no significant correlation with the soil temperature of 5-cm layer and air temperature.
KeywordGongga Mountain Mountain Dark Coniferous Forest Soil Ch4 N2o Flux
Subject AreaS714
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1360/03yd9026
WOS Subject ExtendedGeology
Indexed BySCI
WOS KeywordTEMPERATE ; NITROGEN ; METHANE ; CONSUMPTION
Language英语
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000181672200009
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9632
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Dong, YS,Qi, YC,Luo, J,et al. Experimental study on N2O and CH4 fluxes from the dark coniferous forest zone soil of the Gongga Mountain, China[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2003,46(3):285-295.
APA Dong, YS,Qi, YC,Luo, J,Liang, T,Luo, KL,&Zhang, S.(2003).Experimental study on N2O and CH4 fluxes from the dark coniferous forest zone soil of the Gongga Mountain, China.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,46(3),285-295.
MLA Dong, YS,et al."Experimental study on N2O and CH4 fluxes from the dark coniferous forest zone soil of the Gongga Mountain, China".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 46.3(2003):285-295.
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