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| Titel |
Applying biomass and stem fluxes to quantify temporal and spatial fluctuations of an old-growth forest in disturbance |
| VerfasserIn |
S. Liu, Y.-L. Li, G.-Y. Zhou, K. O. Wenigmann, Y. Luo, D. Otieno, J. Tenhunen |
| 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 ; 6, no. 9 ; Nr. 6, no. 9 (2009-09-01), S.1839-1848 |
| Datensatznummer |
250003988
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| Publikation (Nr.) |
 copernicus.org/bg-6-1839-2009.pdf |
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| Zusammenfassung |
| A subtropical old-growth forest was studied over a twelve-year period to
investigate temporal and spatial fluctuations of biomass and stem fluxes
under disturbances. Vegetations were categorized into three types according
to disturbances caused by biotic and abiotic factors, including Castanopsis chinensis population,
insect direct-influenced population, and insect indirect-influenced
population according to disturbance scenarios. The biomass fluxes (growth
and mortality) and stem fluxes (stem recruitment and mortality) were used to
quantify population fluctuations. Annual average biomass growth rate was
stable throughout the study while annual biomass mortality and stem fluxes
increased consistently. C. chinensis population predominantly contributed to biomass
fluxes of the community. Biomass and stem mortalities of insect
direct-influenced population increased significantly during the whole study
period (1992–2004). Results of indirect-influenced population showed that
(1) the increase in biomass of the dominant species was well correlated
between different intervals. Similar relationships were found in stem
fluxes; (2) higher stem mortality occurred within the DBH range of 1 to 10 cm;
(3) stem fluxes in the canopy gaps were remarkably higher than those in
closed canopy. |
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