Bayesian calibration and Bayesian model comparison of a stand level dynamic growth model for Sitka spruce and Scots pine
Bayesian calibration and Bayesian model comparison of a stand level dynamic growth model for Sitka spruce and Scots pine
复制标题
西加云杉和欧洲赤松林分水平动态生长模型的贝叶斯校准和贝叶斯模型比较
DOI:
10.1093/forestry/cpv003
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发表时间:
2015
期刊:
影响因子:
2.8
通讯作者:
Lonsdale J
中科院分区:
文献类型:
--
作者:
Lonsdale J
Growth models continue to be of importance in modern multi-functional forestry to provide forecasts. Bayesian calibrations allow both model structure and parameters to be assessed simultaneously in a probabilistic framework, providing a model with which forecasts and their uncertainty can be better understood and quantified using posterior probability distributions. A Bayesian calibration of a stand-level dynamic growth (SLeDG) model is carried out for both Sitka spruce and Scots pine in the UK for the first time. The calibration used the differential evolution Markov-Chain method to reduce the required number of iterations for inference. Two different model structures were considered for estimating local stand productivity: one using the measured height–age relationship, and one using estimated site yield class. The height–age relationship was shown to be more probable for both species in a Bayesian model comparison (total model probability0.64 and 0.58 for Sitka spruce and Scots pine, respectively), although metrics of model performance were similar for both model structures (in all variables). A complete calibration (using all data) of the more probable model structure was then completed, and excellent model fit was observed (for all variables in both species). Example forecasts using the output from the calibration were demonstrated, and are compatible with existing yield tables for both species. This method could be applied to other species or other model structures in the future.
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DOI:
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发表时间:
2001
期刊:
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作者:
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2013
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Forestry sciences
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DOI:
--
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2006
期刊:
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