globalchange  > 气候变化事实与影响
DOI: 10.1080/16000889.2019.1581004
WOS记录号: WOS:000462456800001
论文题名:
Estimating methane emissions using vegetation mapping in the taiga-tundra boundary of a north-eastern Siberian lowland
作者: Morozumi, T.1,2; Shingubara, R.1,2,8; Suzuki, R.3; Kobayashi, H.3; Tei, S.2; Takano, S.1; Fan, R.1; Liang, M.1,9; Maximov, T. C.4,5; Sugimoto, A.2,5,6,7
通讯作者: Morozumi, T.
刊名: TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY
ISSN: 1600-0889
出版年: 2019
卷: 71
语种: 英语
英文关键词: CH4 flux ; high-resolution vegetation mapping ; remote sensing ; scaling ; chamber flux measurement
WOS关键词: CLIMATE-CHANGE ; CH4 EMISSION ; SOIL RESPIRATION ; LENA RIVER ; FOREST ; ECOTONE ; DYNAMICS ; PERMAFROST ; LANDSCAPE ; ECOSYSTEM
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Taiga-tundra boundary ecosystems are affected by climate change. Methane (CH4) emissions in taiga-tundra boundary ecosystems have sparsely been evaluated from local to regional scales. We linked in situ CH4 fluxes (2009-2016) with vegetation cover, and scaled these findings to estimate CH4 emissions at a local scale (10x10km) using high-resolution satellite images in an ecosystem on permafrost (Indigirka lowland, north-eastern Siberia). We defined nine vegetation classes, containing 71 species, of which 16 were dominant. Distribution patterns were affected by microtopographic height, thaw depth and soil moisture. The Indigirka lowland was covered by willow-dominated dense shrubland and cotton-sedge-dominated wetlands with sparse larch forests. In situ CH4 emissions were high in wetlands. Lakes and rivers were CH4 sources, while forest floors were mostly neutral in terms of CH4 emission. Estimated local CH4 emissions (37mg m(-2) d(-1)) were higher than those reported in similar studies. Our results indicate that: (i) sedge and emergent wetland ecosystems act as hot spots for CH4 emissions, and (ii) sparse tree coverage does not regulate local CH4 emissions and balance. Thus, larch growth and distribution, which are expected to change with climate, do not contribute to decreasing local CH4 emissions.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132399
Appears in Collections:气候变化事实与影响

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作者单位: 1.Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido, Japan
2.Hokkaido Univ, Arctic Res Ctr, Sapporo, Hokkaido, Japan
3.Japan Agcy Marine Earth Sci & Technol, Yokohama, Kanagawa, Japan
4.Russian Acad Sci, Siberian Branch, Inst Biol Problems Cryolithozone, Yakutsk, Russia
5.North Eastern Fed Univ, Inst Nat Sci, Yakutsk, Russia
6.Hokkaido Univ, Global Inst Collaborat Res & Educ, Global Stn Arctic Res, Sapporo, Hokkaido, Japan
7.Hokkaido Univ, Fac Environm Earth Sci, Sapporo, Hokkaido, Japan
8.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi, Japan
9.Yangtze Univ, Sch Hort & Gardening, Jingzhou, Peoples R China

Recommended Citation:
Morozumi, T.,Shingubara, R.,Suzuki, R.,et al. Estimating methane emissions using vegetation mapping in the taiga-tundra boundary of a north-eastern Siberian lowland[J]. TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY,2019-01-01,71
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