Differential Performance between Two Timber Species in Forest Logging Gaps and in Plantations in Central Africa
Abstract
:1. Introduction
2. Methods
2.1. Study Area
2.2. Study Species
2.3. Silvicultural Experiments
2.3.1. Enrichment in Logging Gaps
2.3.2. Plantations
2.4. Data Analysis
3. Results and Discussion
3.1. Differential Performance between the Two Species
Growth Variable | Milicia excelsa | Pericopsis elata | T Value | p Value | ||||
---|---|---|---|---|---|---|---|---|
Mean | SD | N | Mean | SD | N | |||
(a) Logging Gaps-with-Competition | ||||||||
Height increment (cm·yr−1) | 39.96 a | 30.76 | 172 | 45 a | 23 | 57 | −1.29 | 0.20 |
Diameter increment (mm·yr−1) | 2.87 a | 2.02 | 172 | 2.79 a | 1.37 | 57 | 0.32 | 0.75 |
RGRH (cm cm−1·yr−1) | 0.40 a | 0.16 | 172 | 0.29 b | 0.09 | 57 | 6.81 | <0.0001 |
RGRD (mm mm−1·yr−1) | 0.26 a | 0.11 | 172 | 0.21 b | 0.09 | 57 | 3.41 | 0.0009 |
(b) Plantations-Free-to-Grow | ||||||||
Height increment (cm·yr−1) | 19.96 a | 20.87 | 33 | 86.43 b | 42.96 | 115 | −12.29 | <0.0001 |
Diameter increment (mm·yr−1) | 1.70 a | 1.78 | 33 | 9.08 b | 4.56 | 115 | −14.03 | <0.0001 |
RGRH (cm cm−1·yr−1) | 0.31 a | 0.31 | 33 | 0.53 b | 0.17 | 115 | −3.83 | 0.0005 |
RGRD (mm mm−1·yr−1) | 0.24 a | 0.21 | 33 | 0.47 b | 0.13 | 115 | −6.15 | <0.0001 |
3.2. Tree Architecture in Logging Gaps and in Plantations
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Fayolle, A.; Ouédraogo, D.-Y.; Ligot, G.; Daïnou, K.; Bourland, N.; Tekam, P.; Doucet, J.-L. Differential Performance between Two Timber Species in Forest Logging Gaps and in Plantations in Central Africa. Forests 2015, 6, 380-394. https://doi.org/10.3390/f6020380
Fayolle A, Ouédraogo D-Y, Ligot G, Daïnou K, Bourland N, Tekam P, Doucet J-L. Differential Performance between Two Timber Species in Forest Logging Gaps and in Plantations in Central Africa. Forests. 2015; 6(2):380-394. https://doi.org/10.3390/f6020380
Chicago/Turabian StyleFayolle, Adeline, Dakis-Yaoba Ouédraogo, Gauthier Ligot, Kasso Daïnou, Nils Bourland, Patrice Tekam, and Jean-Louis Doucet. 2015. "Differential Performance between Two Timber Species in Forest Logging Gaps and in Plantations in Central Africa" Forests 6, no. 2: 380-394. https://doi.org/10.3390/f6020380
APA StyleFayolle, A., Ouédraogo, D. -Y., Ligot, G., Daïnou, K., Bourland, N., Tekam, P., & Doucet, J. -L. (2015). Differential Performance between Two Timber Species in Forest Logging Gaps and in Plantations in Central Africa. Forests, 6(2), 380-394. https://doi.org/10.3390/f6020380