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b23b6581e6ab02aeb01de3ec86be23d0 |
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Creator |
ext-55d90b8937b50ec621f59fa577205cce |
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Creator |
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Creator |
ext-197659f2a939dae1721f373c3b8cc170 |
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Creator |
ext-7203624209d0b048ef55544656ab18de |
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Creator |
ext-900843fca030448c1e06c338fdf7fbb9 |
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Creator |
ext-ae98d2e2a71a80867cffb42d6203f720 |
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Creator |
ext-cb7db9c8405da230acd15dc659457c1c |
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Creator |
ext-dff3a0fb46346f9aa1c639fe52fd38b3 |
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Date |
2013-01-31 |
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Is Part Of |
repository |
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Is Part Of |
p14764687 |
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abstract |
Tropical peatlands contain one of the largest pools of terrestrial organic carbon,
amounting to about 89,000 teragrams 1 (1 Tg is a billion kilograms). Approximately
65 per cent of this carbon store is in Indonesia, where extensive anthropogenic degradation
in the form of deforestation, drainage and fire are converting it into a globally
significant source of atmospheric carbon dioxide. Here we quantify the annual export
of fluvial organic carbon from both intact peat swamp forest and peat swamp forest
subject to past anthropogenic disturbance. We find that the total fluvial organic
carbon flux from disturbed peat swamp forest is about 50 per cent larger than that
from intact peat swamp forest. By carbon-14 dating of dissolved organic carbon (which
makes up over 91 per cent of total organic carbon), we find that leaching of dissolved
organic carbon from intact peat swamp forest is derived mainly from recent primary
production (plant growth). In contrast, dissolved organic carbon from disturbed peat
swamp forest consists mostly of much older (centuries to millennia) carbon from deep
within the peat column. When we include the fluvial carbon loss term, which is often
ignored, in the peatland carbon budget, we find that it increases the estimate of
total carbon lost from the disturbed peatlands in our study by 22 per cent. We further
estimate that since 1990 peatland disturbance has resulted in a 32 per cent increase
in fluvial organic carbon flux from southeast Asia—an increase that is more than half
of the entire annual fluvial organic carbon flux from all European peatlands. Our
findings emphasize the need to quantify fluvial carbon losses in order to improve
estimates of the impact of deforestation and drainage on tropical peatland carbon
balances. |
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authorList |
authors |
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status |
peerReviewed |
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volume |
493 |
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type |
AcademicArticle |
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type |
Article |
| 36546 |
label |
Moore, Sam ; Evans, Chris D.; Page, Susan E.; Garnett, Mark H.; Jones, Tim G.; Freeman,
Chris; Hooijer, Aljosja; Wiltshire, Andrew J.; Limin, Suwido H. and Gauci, Vincent
(2013). Deep instability of deforested tropical peatlands revealed by fluvial organic
carbon fluxes. Nature, 493 pp. 660–663. |
| 36546 |
label |
Moore, Sam ; Evans, Chris D.; Page, Susan E.; Garnett, Mark H.; Jones, Tim G.;
Freeman, Chris; Hooijer, Aljosja; Wiltshire, Andrew J.; Limin, Suwido H. and Gauci,
Vincent (2013). Deep instability of deforested tropical peatlands revealed by fluvial
organic carbon fluxes. Nature, 493 pp. 660–663. |
| 36546 |
Title |
Deep instability of deforested tropical peatlands revealed by fluvial organic carbon
fluxes |
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in dataset |
oro |