globalchange  > 气候减缓与适应
DOI: 10.1080/15230430.2019.1570784
WOS记录号: WOS:000486105800004
论文题名:
Land cover and landform-based upscaling of soil organic carbon stocks on the Brogger Peninsula, Svalbard
作者: Wojcik, Robin1,2; Palmtag, Juri1; Hugelius, Gustaf1; Weiss, Niels1; Kuhry, Peter1
通讯作者: Wojcik, Robin
刊名: ARCTIC ANTARCTIC AND ALPINE RESEARCH
ISSN: 1523-0430
EISSN: 1938-4246
出版年: 2019
卷: 51, 期:1, 页码:40-57
语种: 英语
英文关键词: Permafrost-carbon feedback ; Soil organic carbon ; Land cover upscaling ; Landform upscaling ; High Arctic
WOS关键词: PERMAFROST CARBON ; NY-ALESUND ; GLACIER FORELAND ; VEGETATION ; STORAGE ; LANDSCAPE ; DYNAMICS ; ACCUMULATION ; UNCERTAINTY ; SPITSBERGEN
WOS学科分类: Environmental Sciences ; Geography, Physical
WOS研究方向: Environmental Sciences & Ecology ; Physical Geography
英文摘要:

In this study we assess the total storage, landscape distribution, and vertical partitioning of soil organic carbon (SOC) stocks on the Brogger Peninsula, Svalbard. This type of high Arctic area is underrepresented in SOC databases for the northern permafrost region. Physico-chemical, elemental, and radiocarbon (C-14) dating analyses were carried out on thirty-two soil profiles. Results were upscaled using both a land cover classification (LCC) and a landform classification (LFC). Both LCC and LFC approaches provide weighted mean SOC 0-100 cm estimates for the study area of 1.0 +/- 0.3 kg C m(-2) (95% confidence interval) and indicate that about 68 percent of the total SOC storage occurs in the upper 30 cm of the soil, and about 10 percent occurs in the surface organic layer. Furthermore, LCC and LFC upscaling approaches provide similar spatial SOC allocation estimates and emphasize the dominant role of "vegetated area" (4.2 +/- 1.6 kg C m(-2)) and "solifluction slopes" (6.7 +/- 3.6 kg C m(-2)) in SOC 0-100 cm storage. LCC and LFC approaches report different and complementary information on the dominant processes controlling the spatial and vertical distribution of SOC in the landscape. There is no evidence for any significant SOC storage in the permafrost layer. We hypothesize, therefore, that the Brogger Peninsula and similar areas of the high Arctic will become net carbon sinks, providing negative feedback on global warming in the future. The surface area that will have vegetation cover and incipient soil development will expand, whereas only small amounts of organic matter will experience increased decomposition due to active-layer deepening.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/126267
Appears in Collections:气候减缓与适应

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作者单位: 1.Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden
2.GFZ, German Res Ctr Geosci, Sect Interface Geochem, Potsdam, Germany

Recommended Citation:
Wojcik, Robin,Palmtag, Juri,Hugelius, Gustaf,et al. Land cover and landform-based upscaling of soil organic carbon stocks on the Brogger Peninsula, Svalbard[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2019-01-01,51(1):40-57
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