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Status:
accepted
Title:
Tree Diversity Enhances Stand Carbon Storage but Not Leaf Area in a Subtropical Forest
Created at:
2017-01-31
Updated at:
2017-01-31
Envisaged journal:
PLosOne http://dx.doi.org/10.1371/journal.pone.0167771
Envisaged date:
2016-12-09
Rationale:
Research about biodiversity–productivity relationships has focused on herbaceous ecosystems, with results from tree field studies only recently beginning to emerge. Also, the latter are concentrated largely in the temperate zone. Tree species diversity generally is much higher in subtropical and tropical than in temperate or boreal forests, with reasons not fully understood. Niche overlap and thus complementarity in the use of resources that support productivity may be lower in forests than in herbaceous ecosystems, suggesting weaker productivity responses to diversity change in forests. We studied stand basal area, vertical structure, leaf area, and their relationship with tree species richness in a subtropical forest in south-east China. Permanent forest plots of 30 x 30 m were selected to span largely independent gradients in tree species richness and secondary successional age. Plots with higher tree species richness had a higher stand basal area. Also, stand basal area increases over a 4-year census interval were larger at high than at low diversity. These effects translated into increased carbon stocks in aboveground phytomass (estimated using allometric equations). A higher variability in tree height in more diverse plots suggested that these effects were facilitated by denser canopy packing due to architectural complementarity between species. In contrast, leaf area was not or even negatively affected by tree diversity, indicating a decoupling of carbon accumulation from leaf area. Alternatively, the same community leaf area might have assimilated more C per time interval in more than in less diverse plots because of differences in leaf turnover and productivity or because of differences in the display of leaves in vertical and horizontal space. Overall, our study suggests that in species-rich forests niche-based processes support a positive diversity–productivity relationship and that this translates into increased carbon storage in long-lived woody structures. Given the high growth rates of these forests during secondary succession, our results further indicate that a forest management promoting tree diversity after disturbance may accelerate CO2 sequestration from the atmosphere and thus be relevant in a climate-change context.
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CSPs: LAI and PAR Gutianshan 2009

Abstract:
Measuring light interception is important for understanding the conditions at the surface. Questions which had to be answered: How much of the light is reaching the ground and how much is hitting leaf material in the canopy? How efficient were the...

Id: 164
Users: 2
Projects: 1
Datafiles: 1
Attachments: 0
Created at: 2012-01-04
Updated at: 2017-01-31

CSPs: LAI data in spring and summer of 2012

Abstract:
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Id: 519
Users: 3
Projects: 1
Datafiles: 3
Attachments: 0
Created at: 2016-04-12
Updated at: 2016-04-13

CSPs: Leaf litter decomposition in CSPs: remaining litter mass, carbon and nitrogen concentration during decomposition

Abstract:
This data set set belongs to the SP5 litter decomposition experiment that was structured in three parts. First we determined single-species litter decomposition constants of 26 woody species, second litter decomposition of Schima superba was asses...

Id: 345
Users: 2
Projects: 1
Datafiles: 1
Attachments: 0
Created at: 2013-06-06
Updated at: 2016-03-03

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Abstract:
Litterfall production is an important linkage between aboveground and belowground. Most studies are carried out in tropical forests or a single forest plantation, few leaf litter data, however, are available for subtropical forests along a chrono...

Id: 361
Users: 2
Projects: 1
Datafiles: 2
Attachments: 0
Created at: 2013-06-20
Updated at: 2016-03-03

CSPs: Leaf litter quantity and quality in CSPs (2009 - 2012), overview and chemical composition

Abstract:
Litterfall production is an important linkage between aboveground and belowground. Most studies are carried out in tropical forests or a single forest plantation, few leaf litter data, however, are available for subtropical forests along a chrono...

Id: 362
Users: 2
Projects: 1
Datafiles: 1
Attachments: 0
Created at: 2013-06-20
Updated at: 2016-03-17

CSPs: Litterfall production data from 2009 to 2014

Abstract:
Litterfall is the linkage between aboveground and belowground, playing an important role in forest ecosystem. Here, we set up 5 litterfall traps in 27 CSPs, which were built up by a factorial gradient of secondary succession that resulted from hu...

Id: 494
Users: 1
Projects: 1
Datafiles: 0
Attachments: 0
Created at: 2016-03-16
Updated at: 2016-03-17

CSPs: soil respiration in 16 CSPs

Abstract:
The present study was performed in 16 plots spanning a forest age gradient from 20 to 120 years. We investigated the effects of the successional stage on soil respiration (Rs), autotrophic respiration (Ra) and heterotrophic respiration (Rh) in an ...

Id: 536
Users: 3
Projects: 1
Datafiles: 3
Attachments: 0
Created at: 2016-10-15
Updated at: 2017-01-30
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