globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12985
论文题名:
Towards a global assessment of pyrogenic carbon from vegetation fires
作者: Santín C.; Doerr S.H.; Kane E.S.; Masiello C.A.; Ohlson M.; de la Rosa J.M.; Preston C.M.; Dittmar T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:1
起始页码: 76
结束页码: 91
语种: 英语
英文关键词: Biochar ; Black carbon ; Carbon accounting ; Carbon emissions ; Carbon sequestration ; Charcoal ; Dissolved organic carbon ; Erosion ; Pyrogenic organic matter ; Wildfire
Scopus关键词: black carbon ; carbon cycle ; carbon emission ; carbon sequestration ; charcoal ; dissolved organic carbon ; environmental assessment ; erosion ; net primary production ; wildfire ; carbon ; soil ; soot ; biomass ; carbon cycle ; chemistry ; climate ; fire ; plant ; soil ; soot ; Biomass ; Carbon ; Carbon Cycle ; Climate ; Fires ; Plants ; Soil ; Soot
英文摘要: The production of pyrogenic carbon (PyC; a continuum of organic carbon (C) ranging from partially charred biomass and charcoal to soot) is a widely acknowledged C sink, with the latest estimates indicating that ~50% of the PyC produced by vegetation fires potentially sequesters C over centuries. Nevertheless, the quantitative importance of PyC in the global C balance remains contentious, and therefore, PyC is rarely considered in global C cycle and climate studies. Here we examine the robustness of existing evidence and identify the main research gaps in the production, fluxes and fate of PyC from vegetation fires. Much of the previous work on PyC production has focused on selected components of total PyC generated in vegetation fires, likely leading to underestimates. We suggest that global PyC production could be in the range of 116-385 Tg C yr-1, that is ~0.2-0.6% of the annual terrestrial net primary production. According to our estimations, atmospheric emissions of soot/black C might be a smaller fraction of total PyC (<2%) than previously reported. Research on the fate of PyC in the environment has mainly focused on its degradation pathways, and its accumulation and resilience either in situ (surface soils) or in ultimate sinks (marine sediments). Off-site transport, transformation and PyC storage in intermediate pools are often overlooked, which could explain the fate of a substantial fraction of the PyC mobilized annually. We propose new research directions addressing gaps in the global PyC cycle to fully understand the importance of the products of burning in global C cycle dynamics. © 2016 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61532
Appears in Collections:影响、适应和脆弱性

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作者单位: Department of Geography, College of Science, Swansea University, Singleton Park, Swansea, United Kingdom; School of Forest Resources and Environmental Science, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, United States; Departments of Earth Science, BioSciences, and Chemistry, MS 126, Rice University, 6100 Main St, Houghton, TX, United States; Departments of Ecology and Natural Resource Management, Norwegian University of Life Sciences, PO Box 5003, Ås, Norway; Institute of Natural Resources and Agrobiology of Seville (IRNAS), CSIC, Reina Mercedes Av. 10, Seville, Spain; Pacific Forestry Centre of Natural Resources Canada, 506 W. Burnside Rd., Victoria, BC, Canada; Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, Oldenburg, Germany

Recommended Citation:
Santín C.,Doerr S.H.,Kane E.S.,et al. Towards a global assessment of pyrogenic carbon from vegetation fires[J]. Global Change Biology,2016-01-01,22(1)
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