DOI: 10.1016/j.foreco.2013.08.038
Scopus记录号: 2-s2.0-84884236852
论文题名: Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations
作者: Xu G. ; Jiang H. ; Zhang Y. ; Korpelainen H. ; Li C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 310 起始页码: 357
结束页码: 365
语种: 英语
英文关键词: Abies faxoniana
; Elevation
; Labile and recalcitrant soil C
; Microbial biomass C
; Open top chamber warming
Scopus关键词: Abies faxoniana
; Elevation
; Labile and recalcitrant soil C
; Microbial biomass c
; Open top chambers
; Carbon
; Carbon dioxide
; Forestry
; Global warming
; Lakes
; Soils
; biogeochemistry
; biomass
; carbon dioxide
; carbon flux
; carbon sequestration
; deciduous forest
; forest soil
; global warming
; hydrolysis
; litter
; soil carbon
; soil organic matter
; soil respiration
; sulfuric acid
; Abies Faxoniana
; Biomass
; Carbon
; Carbon Dioxide
; Forestry
; Lakes
; Soil
英文摘要: Carbon (C) fluxes are mainly controlled by small labile pools, and the C storage is determined by soil recalcitrant chemical compounds, which are directly associated with litter decomposition. Hence, surveys of soil C fractions, litter decomposition and CO2 efflux can be used to predict the impact of future global warming on subalpine forest ecosystems. Elevation-related differences of Abies faxoniana forest soil can be used as a proxy for future changes of C accumulation in soil. A four-year field experiment was conducted in an A. faxoniana forest using an open top chamber method at two elevations. Two-step sulfuric acid hydrolysis was used to quantify labile and recalcitrant C fractions in soil. Soil warming accelerated labile carbon decomposition and increased recalcitrant C pools, but there were altitudinal differences. Soil warming enhanced soil microbial biomass C (MB-C), accelerated litter decomposition and stimulated the release of carbon dioxide. However, the respiration quotients were not significantly affected by soil warming at either elevation. The proportions of the soil C fractions differed significantly between the two elevations. The responses of the high altitude site to soil warming were larger than those of the low altitude site. Our results suggested that decreases in soil labile C fractions and increases in soil respiration probably resulted from slight increases in MB-C under soil warming, which may enhance C loss, especially at a higher elevation where labile C is more abundant. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66300
Appears in Collections: 影响、适应和脆弱性
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作者单位: Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu 610041, China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; Department of Agricultural Sciences, University of Helsinki, P.O. Box 27, FI-00014 Helsinki, Finland
Recommended Citation:
Xu G.,Jiang H.,Zhang Y.,et al. Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations[J]. Forest Ecology and Management,2013-01-01,310