The effect of tree species diversity on fine-root production in a young temperate forest

Oecologia ◽  
2012 ◽  
Vol 169 (4) ◽  
pp. 1105-1115 ◽  
Author(s):  
Pifeng Lei ◽  
Michael Scherer-Lorenzen ◽  
Jürgen Bauhus
Forests ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 1113 ◽  
Author(s):  
Juhan Park ◽  
Hyun Seok Kim ◽  
Hyun Kook Jo ◽  
II Bin Jung

Research Highlights: Using a long-term dataset on temperate forests in South Korea, we established the interrelationships between tree species and structural diversity and forest productivity and stability, and identified a strong, positive effect of structural diversity, rather than tree species diversity, on productivity and stability. Background and Objectives: Globally, species diversity is positively related with forest productivity. However, temperate forests often show a negative or neutral relationship. In those forests, structural diversity, instead of tree species diversity, could control the forest function. Materials and Methods: This study tested the effects of tree species and structural diversity on temperate forest productivity. The basal area increment and relative changes in stand density were used as proxies for forest productivity and stability, respectively. Results: Here we show that structural diversity, but not species diversity, had a significant, positive effect on productivity, whereas species diversity had a negative effect, despite a positive effect on diversity. Structural diversity also promoted fewer changes in stand density between two periods, whereas species diversity showed no such relation. Structurally diverse forests might use resources efficiently through increased canopy complexity due to canopy plasticity. Conclusions: These results indicate reported species diversity effects could be related to structural diversity. They also highlight the importance of managing structurally diverse forests to improve productivity and stability in stand density, which may promote sustainability of forests.


2007 ◽  
Vol 37 (10) ◽  
pp. 1954-1965 ◽  
Author(s):  
Oscar J. Valverde-Barrantes

Although significant advances have been made in understanding terrestrial carbon cycling, there is still a large uncertainty about the variability of carbon (C) fluxes at local scales. Using a carbon mass-balance approach, I investigated the relationships between fine detritus production and soil respiration for five tropical tree species established on 16-year-old plantations. Total fine detritus production ranged from 0.69 to 1.21 kg C·m–2·year–1 with significant differences among species but with no correlation between litterfall and fine-root growth. Soil CO2 emissions ranged from 1.61 to 2.36 kg C·m–2·year–1 with no significant differences among species. Soil respiration increased with fine-root production but not with litterfall, suggesting that soil C emissions may depend more on belowground inputs or that both fine root production and soil respiration are similarly influenced by an external factor. Estimates of root + rhizosphere respiration comprised 52% of total soil respiration on average, and there was no evidence that rhizosphere respiration was associated with fine-root growth rates among species. These results suggest that inherent differences in fine-root production among species, rather than differences in aboveground litterfall, might play a main role explaining local-scale, among-forest variations in soil C emissions.


2012 ◽  
Vol 101 (1) ◽  
pp. 210-219 ◽  
Author(s):  
Brian W. Brassard ◽  
Han Y. H. Chen ◽  
Xavier Cavard ◽  
Jérôme Laganière ◽  
Peter B. Reich ◽  
...  

2017 ◽  
Vol 10 (1) ◽  
pp. 146-157 ◽  
Author(s):  
Zhenkai Sun ◽  
Xiaojuan Liu ◽  
Bernhard Schmid ◽  
Helge Bruelheide ◽  
Wensheng Bu ◽  
...  

Author(s):  
Maliheh Arekhi ◽  
Osman Yalçın Yılmaz ◽  
Hatice Yılmaz ◽  
Yaşar Feyza Akyüz

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