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Applying Biomass and Stem Fluxes to Quantify Temporal and Spatial Fluctuations of an Old-growth Forest in Disturbance : Volume 6, Issue 2 (03/03/2009)

By Liu, S.

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Book Id: WPLBN0004005199
Format Type: PDF Article :
File Size: Pages 31
Reproduction Date: 2015

Title: Applying Biomass and Stem Fluxes to Quantify Temporal and Spatial Fluctuations of an Old-growth Forest in Disturbance : Volume 6, Issue 2 (03/03/2009)  
Author: Liu, S.
Volume: Vol. 6, Issue 2
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Zhou, G. -., Wenigmann, K. O., Otieno, D., Li, Y. -., Luo, Y., Liu, S., & Tenhunen, J. (2009). Applying Biomass and Stem Fluxes to Quantify Temporal and Spatial Fluctuations of an Old-growth Forest in Disturbance : Volume 6, Issue 2 (03/03/2009). Retrieved from

Description: South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR, China. A subtropical old-growth forest was analyzed over a twelve year period to investigate temporal and spatial fluctuations of biomass and stem fluxes under disturbances. Vegetations were categorized into three types caused by biotic factors and abiotic factors, including Castanopsis chinensis population, insect direct-influenced population, and insect indirect-influenced population according to disturbance scenarios. The biomass fluxes (including biomass growth and mortality) and stem fluxes (including stem recruitment and mortality) were used to quantify the fluctuation of population. The results showed that annual average biomass growth rate was stable throughout the three periods, 1992–1994, 1994–1999, and 1999–2004, while annual biomass mortality and stem fluxes kept increasing through the three periods. Castanopsis chinensis population contributed the most in biomass fluxes of the community. Biomass and stem mortalities of insect direct-influenced population increased significantly during the whole study period (1992–2004). Dynamics of indirect-influenced population were compared by dominate species, diameter classes, and spatial patterns of subplots, respectively. Results of indirect-influenced population showed that (1) the increase of biomass of the dominant species was well correlated between different intervals. Similar relationships were found in stem fluxes; (2) higher stem mortality was observed when DBH ranged from 1 to 10 cm as compared with individuals in other DBH classes; (3) stem fluxes in the canopy gaps were remarkably higher than those in closed canopy. The biomass growth rate in gaps increased remarkably after the formation of the gaps.

Applying biomass and stem fluxes to quantify temporal and spatial fluctuations of an old-growth forest in disturbance

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