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DOI | 10.1016/j.foreco.2019.117583 |
Development of a generic model describing modulus of elasticity of Pinus radiata in Chile and New Zealand | |
Watt, Michael S.1; Trincado, Guillermo2 | |
2019-12-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2019 |
卷号 | 453 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; Chile |
英文摘要 | Using three national datasets collected across Chile and New Zealand we developed a model of Modulus of Elasticity (E) for Pinus radiata D. Don to ascertain whether predictions can be generalised across countries. Data used within the model covered a wide range in E (3.1-19.0 GPa) and tree age (6-25 years). The temperature range of 8.2-15.9 degrees C and rainfall range of 636-3276 mm covered the variation present within plantations in both countries. A range of models were tested that varied in complexity with the simplest including only the tree dimensions (diameter (DBH), height (H) and stem slenderness (S)), to tree dimensions and stand age, and finally, for the most complex models, all of these variables as well as climatic data and stand density. Modelling approaches included general linear models, and for the models with more variables, elastic net, partial least squares and sparse partial least squares. Analyses show S to be a more precise predictor of E than either H or DBH. The most precise model of E, which had R-2 of 0.82 and RMSE of 1.57 GPa, included stand age, S, air temperature and rainfall as significant predictors. This model was constructed using a linear modelling approach and predictions using more sophisticated methods were not significantly more precise. Predictions were applicable across both Chile and New Zealand as evidenced by the lack of bias, with respect to country level datasets, in the final model. |
英文关键词 | Climate Modulus of elasticity Stem slenderness Stiffness Velocity |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496607200017 |
WOS关键词 | INITIAL STAND DENSITY ; VARIABLE SELECTION ; WOOD PROPERTIES ; STIFFNESS ; TREE ; FOREST ; THIGMOMORPHOGENESIS ; CLASSIFICATION ; SPECTROSCOPY ; ATTRIBUTES |
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/224783 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Scion, POB 29237, Christchurch, New Zealand; 2.Univ Austral Chile, Inst Bosques & Soc, Fac Ciencias Forestales & Recursos Nat, Box 567, Valdivia, Chile |
推荐引用方式 GB/T 7714 | Watt, Michael S.,Trincado, Guillermo. Development of a generic model describing modulus of elasticity of Pinus radiata in Chile and New Zealand[J]. FOREST ECOLOGY AND MANAGEMENT,2019,453. |
APA | Watt, Michael S.,&Trincado, Guillermo.(2019).Development of a generic model describing modulus of elasticity of Pinus radiata in Chile and New Zealand.FOREST ECOLOGY AND MANAGEMENT,453. |
MLA | Watt, Michael S.,et al."Development of a generic model describing modulus of elasticity of Pinus radiata in Chile and New Zealand".FOREST ECOLOGY AND MANAGEMENT 453(2019). |
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