Holocene carbon flux histories of the world’s peatlands
Global carbon-cycle implications
Bibliographic Data
| ID | 12265314 |
|---|---|
| Authors | Zicheng Yu (0000-0003-2358-2712, Lehigh University, corresponding author) |
| Year | 2011 |
| Volume | 21 |
| Issue | 5 |
| Pages | 761-774 |
| Publication date | 2011-01-27 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | The Holocene (JOURNAL) |
| Journal identifiers | ISSN: 0959-6836 • E-ISSN: 1477-0911 |
| Publisher | SAGE Publishing (PUBLISHER • US) |
| DOI | 10.1177/0959683610386982 |
| OpenAlex | W2115862014 |
| Language | EN |
| Citations received | 33 |
| References cited | 54 |
This paper proposes a novel approach using basal peat ages and carbon (C) accumulation profiles from the world’s major peatland regions to decompose C flux terms from time-dependent C pool data observed from peat cores. Our peat-data syntheses show that the total peat C pools are 547 GtC, 50 GtC, and 15 GtC for northern, tropical and southern peatlands, respectively. The modeled net C balance (NCB) has a mean value of 41.8 TgC/yr for northern peatlands during the Holocene, ranging from 83.1 TgC/yr in the early Holocene around 9 ka (1 ka = 1000 cal. yr BP) to 21.5 TgC/yr around 2 ka, a temporal pattern mostly owing to the delayed effect of long-term decay of previously accumulated peat C. NCB from tropical and southern peatlands represents much smaller terms, mostly less than 10 TgC/yr. Northern peatlands represent about 90% of global total peatland C pool of 612 GtC and >90% of global peatland NCB. Our bottom-up global peatland synthesis indicates a decrease in rates of peatland area expansion and reduced CH 4 emissions during the late Holocene, thus lending support for an anthropogenic source of late-Holocene CH 4 rise. The C balance analysis of global peatland data indicates a cumulative net C uptake of 272 GtC in the early Holocene (11–7 ka), 151 GtC at 7–4 ka, and 116 GtC after 4 ka. The large cumulative fluxes and significant variations throughout the Holocene could greatly contribute to the observed atmospheric CO 2 and δ 13 CO 2 patterns derived from Antarctic ice cores. Thus, global mass-balance calculations or climate–carbon cycle simulations have to consider these large net C uptake terms from global peatlands and their variations over the Holocene
Archaeology · Climatology · Geography · Holocene · Peat · Physical geography · Coastal wetland ecosystem dynamics · Environmental Science · Geology and Paleoclimatology Research · Peatlands and Wetlands Ecology · Geology · Oceanography
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| Unique citing works | 33 |
|---|---|
| Citations per year | 2,06 |
| Citation span | 2010 - 2026 (17) |
| Citation velocity | current |
| Highly cited | No |
| Citation types | Neutral: 32 |