气候变化领域集成服务门户(CCPortal): The oldest extant tropical peatland in the world: a major carbon reservoir for at least 47 000 years

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DOI	10.1088/1748-9326/abb853
	The oldest extant tropical peatland in the world: a major carbon reservoir for at least 47 000 years
	Ruwaimana M.; Anshari G.Z.; Silva L.C.R.; Gavin D.G.
发表日期	2020
ISSN	17489318
卷号	15 期号:11
英文摘要	Tropical peatlands in Southeast Asia cover ∼25 million hectares and exert a strong influence on the global carbon cycle. Recent widespread peatland subsidence and carbon dioxide emissions in response to human activity and climate change have been well documented, but peatland genesis remains poorly understood. Unlike coastal peatlands that established following sea-level stabilization during the mid-Holocene, inland peatlands of Borneo are little studied and have no apparent environmental constraint on their formation. Here, we report radiocarbon dates from the Upper Kapuas Basin which show inland peat formation since at least 47.8 thousand calibrated radiocarbon years before present, ka. We provide a synthesis of new and existing peat basal dates across Borneo, which shows a hiatus in peat genesis during a cool and dry period from 30 to 20 ka. Despite likely peat degradation during that period, the Upper Kapuas is still exceptionally deep, reaching a maximum depth (determined from coring) of 18 m. Our best estimate of mean peat depth over 3833 km2 of the Upper Kapuas is 5.16 ± 2.66 m, corresponding to a carbon density of 2790 ± 1440 Mg C ha−1. This is one of the most carbon-dense ecosystems in the world. It withstood the glacial-interglacial climate transition and remains mostly intact, but is increasingly threatened by land-use change. © 2020 The Author(s). Published by IOP Publishing Ltd
英文关键词	Borneo; Carbon reservoir; Holocene; Last glacial maximum; Peat; Radiocarbon dating; Tropical peatland
语种	英语
scopus关键词	Carbon dioxide; Global warming; Land use; Peat; Sea level; Tropics; Carbon dioxide emissions; Carbon reservoirs; Environmental constraints; Global carbon cycle; Human activities; Interglacial climate; Land-use change; Radiocarbon dates; Wetlands; carbon dioxide; climate change; environmental constraint; hiatus; human activity; peatland; radiocarbon dating; sea level change; stabilization; subsidence; Borneo
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153506
作者单位	Universitas Tanjungpura (UNTAN), Pontianak, Indonesia; University of Oregon, Eugene, OR, United States; Universitas Atma Jaya Yogyakarta, Yogyakarta, Indonesia
推荐引用方式 GB/T 7714	Ruwaimana M.,Anshari G.Z.,Silva L.C.R.,et al. The oldest extant tropical peatland in the world: a major carbon reservoir for at least 47 000 years[J],2020,15(11).
APA	Ruwaimana M.,Anshari G.Z.,Silva L.C.R.,&Gavin D.G..(2020).The oldest extant tropical peatland in the world: a major carbon reservoir for at least 47 000 years.Environmental Research Letters,15(11).
MLA	Ruwaimana M.,et al."The oldest extant tropical peatland in the world: a major carbon reservoir for at least 47 000 years".Environmental Research Letters 15.11(2020).