 |
| Titel |
Current and future CO2 emissions from drained peatlands in Southeast Asia |
| VerfasserIn |
A. Hooijer, S. Page, J. G. Canadell, M. Silvius, J. Kwadijk, H. Wösten, J. Jauhiainen |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1726-4170
|
| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 7, no. 5 ; Nr. 7, no. 5 (2010-05-12), S.1505-1514 |
| Datensatznummer |
250004768
|
| Publikation (Nr.) |
 copernicus.org/bg-7-1505-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| Forested tropical peatlands in Southeast Asia store at least 42 000 Million
metric tonnes (Mt) of soil carbon. Human activity and climate change
threatens the stability of this large pool, which has been decreasing
rapidly over the last few decades owing to deforestation, drainage and fire.
In this paper we estimate the carbon dioxide (CO2) emissions resulting
from drainage of lowland tropical peatland for agricultural and forestry
development which dominates the perturbation of the carbon balance in the
region. Present and future emissions from drained peatlands are quantified
using data on peatland extent and peat thickness, present and projected land
use, water management practices and decomposition rates. Of the 27.1 Million
hectares (Mha) of peatland in Southeast Asia, 12.9 Mha had been deforested
and mostly drained by 2006. This latter area is increasing rapidly because
of increasing land development pressures. Carbon dioxide (CO2) emission
caused by decomposition of drained peatlands was between 355 Mt y−1 and
855 Mt y−1 in 2006 of which 82% came from Indonesia, largely Sumatra
and Kalimantan. At a global scale, CO2 emission from peatland drainage
in Southeast Asia is contributing the equivalent of 1.3% to 3.1% of
current global CO2 emissions from the combustion of fossil fuel. If
current peatland development and management practices continue, these
emissions are predicted to continue for decades. This warrants inclusion of
tropical peatland CO2 emissions in global greenhouse gas emission
calculations and climate mitigation policies. Uncertainties in emission
calculations are discussed and research needs for improved estimates are
identified. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|