On the site-level suitability of biomass models

On the site-level suitability of biomass models
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生物质模型的场地水平适用性

DOI:
10.1016/j.envsoft.2015.07.019
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发表时间:
2015
期刊:
Environ. Model. Softw.
影响因子:
--
通讯作者:
Kleinn
Kleinn
中科院分区:
--
文献类型:
--
作者:
Pérez-Cruzado;Fehrmann;Magdon;Cañellas;Kleinn

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环境研究中的树木生物量估算基于异速生长模型,已知该模型会随物种、地点和其他森林特征而变化。 UNFCCC 发布了在应用前评估生物质模型适用性的指南,但它误导了模型适用性的概念,并且也允许选择预测存在系统偏差的模型。在这里,我们提出了一种基于非参数技术的替代方法。该方法针对纯林进行了测试,但该方法同样适用于混交林。如果目标人群的预测存在系统性偏差,则所提出的测试在拒绝模型方面表现良好。事实证明,异速生长模型的适用性取决于准确性。所提出的方法还允许本地化模型。所提出的方法可以提高全球森林监测系统的透明度,并且可以相对较小的努力来实施。
Tree biomass estimates in environmental studies are based on allometric models, which are known to vary with species, site, and other forest characteristics. The UNFCCC published a guideline to evaluate the appropriateness of biomass models before application, but it misleads the concept of model suitability and does also allow the selection of models with systematic deviations in the predictions. Here we present an alternative approach based on non-parametric techniques. The approach was tested for pure stands, but this methodology is likewise applicable to mixed forests. The proposed tests perform well in rejecting a model if the predictions for the targeted population are systematically deviant. It is demonstrated that the suitability of an allometric model is a matter of accuracy. The proposed method also allows localizing the model. The presented approach can improve the transparency of global forest monitoring systems and can be implemented with relatively small effort.
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