Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2016.12.034 |
A generalized interregional nonlinear mixed-effects crown width model for Prince Rupprecht larch in northern China | |
Fu, Liyong1,2; Sharma, Ram P.3; Hao, Kaijie4; Tang, Shouzheng1 | |
2017-04-01 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT |
ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 389 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA; Czech Republic |
英文摘要 | Crown width is a tree variable that is commonly used as an important predictor in forest growth and yield models that serve as decision-support tools in forestry. Here, we developed a generalized interregional nonlinear mixed-effects individual tree crown width model using data from 3369 Prince Rupprecht larch (Larix principis-rupprechtii Mayr.) trees on 116 sample plots that were distributed across the two most important regions in northern China. Because measurements from the same sample plot were highly correlated with each other, random effects at the levels of both sample plots and stands with different site conditions (blocks) were used to develop a two-level nonlinear mixed-effects crown width model. To describe the interregional variability of crown width between the regions, a dummy variable, which accounts for region-specific differences, was introduced into the model. The results showed that the two-level interregional nonlinear mixed-effects crown width model accurately described the regional variability of crown width for Prince Rupprecht larch in northern China. Modeling the random effects at the block level alone led to significantly high correlations among the residuals. However, these correlations decreased significantly when the random effects were modeled at both the block and sample plot levels. Measuring the crown width of four randomly selected Prince Rupprecht larch trees per sample plot is recommended for localizing the mixed-effects crown width model and precisely predicting the crown widths of the remaining trees on each plot. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Crown width Interregional effects Optimal sample size Random effects Two-level mixed-effects model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398868800036 |
WOS关键词 | HEIGHT-DIAMETER MODEL ; AREA INCREMENT MODEL ; NORWAY SPRUCE ; NORTHEASTERN CHINA ; INDIVIDUAL TREES ; FOREST CANOPIES ; STONE PINE ; SCOTS PINE ; BIOMASS ; EQUATIONS |
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/23204 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China; 2.Penn State Univ, Ctr Stat Genet, Loc T3436,Mail Code CH69,500 Univ Dr, Hershey, PA 17033 USA; 3.Czech Univ Life Sci, Fac Forestry & Wood Sci, Prague, Czech Republic; 4.Shanxi Acad Forestry Sci, Taiyuan 030012, Shanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Fu, Liyong,Sharma, Ram P.,Hao, Kaijie,et al. A generalized interregional nonlinear mixed-effects crown width model for Prince Rupprecht larch in northern China[J]. FOREST ECOLOGY AND MANAGEMENT,2017,389. |
APA | Fu, Liyong,Sharma, Ram P.,Hao, Kaijie,&Tang, Shouzheng.(2017).A generalized interregional nonlinear mixed-effects crown width model for Prince Rupprecht larch in northern China.FOREST ECOLOGY AND MANAGEMENT,389. |
MLA | Fu, Liyong,et al."A generalized interregional nonlinear mixed-effects crown width model for Prince Rupprecht larch in northern China".FOREST ECOLOGY AND MANAGEMENT 389(2017). |
条目包含的文件 | 条目无相关文件。 |
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