Site Class Effects on Stump and Coarse Root Biomass Models of Larix olgensis in Northeastern China

编号 010035802

推送时间 20220829

研究领域 森林生态 

年份 2022 

类型 期刊 

语种 英语

标题 Site Class Effects on Stump and Coarse Root Biomass Models of Larix olgensis in Northeastern China

来源期刊 forest

期 第358期

发表时间 20220809

关键词 Poplar;  Populus sp.;  Hybrids;  Fast-Growing Plantations;  Intensive Forestry;  Short and Long Rotation Plantations;  Stem Volume;  Climate; 

摘要 The stump and coarse root biomass remaining after tree harvesting are often overlooked by researchers, which may lead to underestimation of their role in carbon cycling, so we constructed two sets of additive models for larch (Larix olgensis Henry) plantations in Northeast China. Due to the absence of tree diameter at breast height data after harvesting, only the sole predictor variable stump disc diameter could be used to predict stump and coarse root biomass, and the results showed that stump disc diameter predicted stump biomass with higher accuracy than coarse root biomass predictions. In addition, to investigate the effect of the site class of complex stands on the predictive capability of the model, the generic model in this study was employed with all site class data and a specific model was developed and employed with all the site class data. We found that the generic model had different degrees of error compared to the predicted results for each site class, overestimating the total biomass by 15% and underestimating it by 10%, especially for site class IV. In conclusion, to obtain a biomass prediction model with reliable results, the impact of more complex site class effects should be considered.

服务人员 王璐

服务院士 蒋有绪

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