Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2019.01.042 |
Growth determinants of timber species Triplochiton scleroxylon and implications for forest management in central Africa | |
Ligot, Gauthier1; Fayolle, Adeline1; Gourlet-Fleury, Sylvie2; Dainou, Kasso1; Gillet, Jean-Francois1; De Ridder, Maaike3; Drouet, Thomas4; Groenendijk, Peter5; Doucet, Jean-Louis1 | |
2019-04-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 437页码:211-221 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; France; Brazil |
英文摘要 | The sustainability of the polycyclic logging system in tropical forests has been increasingly questioned for a variety of reasons, and particularly in central Africa as commercial species, mostly light-demanding long-lived pioneer species, usually fail to recover a stable number of large trees after exploitation. Several factors are known to affect tropical tree demographic processes, like tree growth, survival and recruitment. Tree growth has particularly been showed to depend on ecological conditions, tree genetics, and competition with surrounding vegetation, as well as tree size or ontogeny. Yet, due to the paucity of available data, the importance of such factors is unclear and usually ignored when estimating future timber yields. To fill this gap, we chose to evaluate the variability in growth of one African long-lived pioneer and commercially very important species: Triplochiton scleroxylon K. Schum, gathering a broad dataset composed of tree ring data recorded in one site in Cameroon and periodic field inventory data recorded in seven sites across central Africa. In total, we analyzed 13,225 records of annual tree diameter increments recorded over 920 trees from seven sites in Cameroon, Republic of the Congo and Central African Republic. We evaluated (i) to what extent the average growth of trees that reach harvestable dimensions differs from population average and (ii) to what extent past perturbations influence the growth of remaining trees. We found the diameter growth of T. scleroxylon to be remarkably variable and this study provided an unprecedented quantification of the magnitude of some key growth determinants. In unlogged forests, the diameter increment of T. scleroxylon ranged between 0.40 cm year(-1) in Southern Cameroon and 0.83 cm year(-1) in South-Eastern Cameroon. The diameter increment was weakly related to tree size but increased twofold from unlogged to logged forests. Perturbation caused by logging stimulates growth of T. sciercoodon for at least 10-15 years. Finally, harvestable timber stock of large-sized T. scleroxylon was found to be constituted by trees that grew in average twice faster than trees of the entire extant population. As more and more inventory data become available, quantifying these effects could be replicated for other timber species and in other sites, to improve the accuracy of future timber resource estimates and improve forest management guidelines. |
英文关键词 | Ayous Obeche Tree-ring analysis Light-demanding species Logging Persistent fast growth Juvenile selection effect Stock recovery rate |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461270600020 |
WOS关键词 | WET TROPICAL FOREST ; TREE-RING DATA ; RAIN-FOREST ; SILVICULTURAL TREATMENTS ; POPULATION-DYNAMICS ; RATES ; SUSTAINABILITY ; CONSERVATION ; PATTERNS ; TRAITS |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23631 |
专题 | 气候变化 |
作者单位 | 1.Univ Liege, Gembloux Agrobio Tech, Passage Deportes 2, B-5030 Gembloux, Belgium; 2.CIRAD, UPR Forets & Soc, Montpellier, France; 3.Royal Museum Cent Africa, Leuvensesteenweg 13, B-3080 Tervuren, Belgium; 4.Univ Libre Bruxelles, Lab Ecol Vegetale & Biogeochim EvB, Blvd Triomphe CP244, B-050 Brussels, Belgium; 5.Univ Estadual Campinas, UNICAMP, Inst Biol, Dept Plant Biol, POB 6109, BR-13083970 Campinas, SP, Brazil |
推荐引用方式 GB/T 7714 | Ligot, Gauthier,Fayolle, Adeline,Gourlet-Fleury, Sylvie,et al. Growth determinants of timber species Triplochiton scleroxylon and implications for forest management in central Africa[J]. FOREST ECOLOGY AND MANAGEMENT,2019,437:211-221. |
APA | Ligot, Gauthier.,Fayolle, Adeline.,Gourlet-Fleury, Sylvie.,Dainou, Kasso.,Gillet, Jean-Francois.,...&Doucet, Jean-Louis.(2019).Growth determinants of timber species Triplochiton scleroxylon and implications for forest management in central Africa.FOREST ECOLOGY AND MANAGEMENT,437,211-221. |
MLA | Ligot, Gauthier,et al."Growth determinants of timber species Triplochiton scleroxylon and implications for forest management in central Africa".FOREST ECOLOGY AND MANAGEMENT 437(2019):211-221. |
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