关键词: 立木材积, 地上生物量, 哑变量模型, 线性混合模型, 通用性模型, 马尾松

Abstract:

Based on the tree volume and above-ground biomass data of Masson Pine (Pinus massoniana) plantation of Guizhou Province in China, population average models for province-level estimation and region-specific dummy variable models and linear mixed models were established at first. Secondly, the differences between two specific models for central region and other region and population average models were compared and analyzed, and the predictions of various models were conducted on fit data and validation data. The results showed that the region-specific models and population average models were not significantly different for tree volume and above-ground biomass estimation, and dummy variable models and linear mixed models were not significantly different too. The models constructed in this study would provide quantitative basis for monitoring and assessment of forest stock and biomass of Masson Pine plantation, and the method used here might provide a feasible approach to construct generalized models with specific parameters.

Key words: tree volume, above-ground biomass, dummy variable model, linear mixed model, generalized model, Pinus massoniana