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| Titel |
A cost-efficient method to assess carbon stocks in tropical peat soil |
| VerfasserIn |
M. W. Warren, J. B. Kauffman, D. Murdiyarso, G. Anshari, K. Hergoualc'h, S. Kurnianto, J. Purbopuspito, E. Gusmayanti, M. Afifudin, J. Rahajoe, L. Alhamd, S. Limin, A. Iswandi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 9, no. 11 ; Nr. 9, no. 11 (2012-11-14), S.4477-4485 |
| Datensatznummer |
250007390
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| Publikation (Nr.) |
 copernicus.org/bg-9-4477-2012.pdf |
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| Zusammenfassung |
| Estimation of belowground carbon stocks in tropical wetland forests requires
funding for laboratory analyses and suitable facilities, which are often
lacking in developing nations where most tropical wetlands are found. It is
therefore beneficial to develop simple analytical tools to assist belowground
carbon estimation where financial and technical limitations are common. Here
we use published and original data to describe soil carbon density
(kgC m−3; Cd) as a function of bulk density (gC cm−3;
Bd), which can be used to rapidly estimate belowground carbon
storage using Bd measurements only. Predicted carbon densities and
stocks are compared with those obtained from direct carbon analysis for ten
peat swamp forest stands in three national parks of Indonesia. Analysis of
soil carbon density and bulk density from the literature indicated a strong
linear relationship (Cd = Bd × 495.14 + 5.41, R2 =
0.93, n = 151) for soils with organic C content > 40%.
As organic C content decreases, the relationship between Cd and
Bd becomes less predictable as soil texture becomes an important
determinant of Cd. The equation predicted belowground C stocks to
within 0.92% to 9.57% of observed values. Average bulk
density of collected peat samples was 0.127 g cm−3, which is in
the upper range of previous reports for Southeast Asian peatlands. When
original data were included, the revised equation Cd = Bd
× 468.76 + 5.82, with R2 = 0.95 and n = 712, was slightly below the
lower 95% confidence interval of the original equation, and tended to
decrease Cd estimates. We recommend this last equation for a rapid
estimation of soil C stocks for well-developed peat soils where C content
> 40%. |
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