DOI: 10.1016/j.foreco.2013.10.028
Scopus记录号: 2-s2.0-84888137257
论文题名: Dynamics of carbon and nitrogen accumulation and C: N stoichiometry in a deciduous broadleaf forest of deglaciated terrain in the eastern Tibetan Plateau
作者: Yang Y. ; Wang G. ; Shen H. ; Yang Y. ; Cui H. ; Liu Q.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 312 起始页码: 10
结束页码: 18
语种: 英语
英文关键词: Biomass
; C Pool
; C:N stoichiometry
; Chronosequence
Scopus关键词: Broadleaf forest
; C Pool
; C:N stoichiometry
; Carbon and nitrogen
; Chronosequences
; Eastern Tibetan plateau
; Relative contribution
; Total ecosystem C
; Biomass
; Budget control
; Carbon
; Digital storage
; Ecosystems
; Forestry
; Lakes
; Landforms
; Minerals
; Nitrogen
; Stoichiometry
; Vegetation
; Soils
; bioaccumulation
; biomass
; carbon budget
; deciduous forest
; deglaciation
; forest floor
; spatial distribution
; China
; Qinghai-Xizang Plateau
英文摘要: Although many studies have focused on the spatial distribution of global carbon (C), there are still considerable uncertainties associated with the global C budget due to insufficient and incomplete data. The sequestration of ecosystem C corresponding to different ages provides a more accurate method for quantifying the C budget. In this work, the chronosequence approach was used to explore the relationship between the C dynamics and the carbon:nitrogen (C:N) stoichiometry in a broadleaf forest of a deglaciated terrain. The database included five successional sites, and each site consisted of three parallel plots. Our results showed that (1) C and N can accumulate in aboveground vegetation, forest floor, and mineral soil throughout the terrain ages, (2) the relative contribution to the total ecosystem C increased in aboveground vegetation and decreased in mineral soil with increasing terrain age, (3) C and N scaled isometrically (the slope of relationship between the rates of relative C and N changes is significant from 1.0) along the successional sequence in the aboveground vegetation but not in mineral soil, and (4) the C:N ratio kept constant in the aboveground vegetation and decreased in mineral soil, which implies a more rapid N accumulation in mineral soil. These results demonstrate that the increased C storage was accompanied by N accumulation in all of the layers throughout the terrain age and that the aboveground vegetation became a primary ecosystem C pool. However, it should be considered that the carbon has been flowing into the soil from belowground. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66201
Appears in Collections: 影响、适应和脆弱性
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作者单位: Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, China; State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
Recommended Citation:
Yang Y.,Wang G.,Shen H.,et al. Dynamics of carbon and nitrogen accumulation and C: N stoichiometry in a deciduous broadleaf forest of deglaciated terrain in the eastern Tibetan Plateau[J]. Forest Ecology and Management,2014-01-01,312