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| Titel |
Belowground carbon pools and dynamics in China's warm temperate and sub-tropical deciduous forests |
| VerfasserIn |
C. W. Xiao, I. A. Janssens, W. G. Sang, R. Z. Wang, Z. Q. Xie, Z. Q. Pei, Y. Yi |
| 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 ; 7, no. 1 ; Nr. 7, no. 1 (2010-01-20), S.275-287 |
| Datensatznummer |
250004379
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| Publikation (Nr.) |
 copernicus.org/bg-7-275-2010.pdf |
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| Zusammenfassung |
| We report the first estimates of pools and dynamics of
microbes, roots, plant litter and soil organic carbon (SOC) in three
dominant types of China's vast deciduous forest area: Betula platyphylla, Quercus liaotungensis, and Quercus aliena var. acuteserrata.
Organic matter degradation rates overshadowed litter inputs as the main
determinant of the soil carbon stocks. Across the three forests, rates of
litter decomposition were also indicative for turnover rates of SOC. Litter
and SOC decay was faster in the sub-tropical than in the warm-temperate
forests. Among the latter, SOC turnover was highest in the forest producing
the higher-quality litter. Microbial biomass was, as expected, correlated
with SOC content. Microbial activity, in contrast, was highest at the
sub-tropical forest, despite the lower SOC availability, lower fraction of
labile SOC, and lower soil microbial biomass. These results may contribute
to increased understanding of controls over belowground carbon cycling in
deciduous forests. |
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