Using the dummy variable model approach to construct compatible single-tree biomass equations at different scales - a case study for Masson pine (Pinus massoniana) in southern China

作者：Zeng, Wei Sheng^*; Zhang, Hui Ru; Tang, Shou Zheng

来源：Canadian Journal of Forest Research, 2011, 41(7): 1547-1554.

DOI：10.1139/X11-068

• VOLUME EQUATIONS
• BIAS CORRECTION
• REGRESSION
• ERRORS

It is fundamental for monitoring and assessment of national forest biomass to develop generalized single-tree biomass models suitable for large-scale forest biomass estimation. However, the compatibility of forest biomass estimates among different scales is a real problem. Based on the aboveground biomass data of Masson pine (Pinus massoniana Lamb.) in southern China, generalized single-tree biomass equations applying to national and regional forest biomass estimation were constructed using the dummy variable model method, which provided an effective approach to solving the compatibility of forest biomass estimates among different scales. The results show that aboveground biomass estimates of individual trees with the same diameter are different to some extent among the forest origins and geographic regions and that a dummy model with specific (local) parameters is better than a population-average model. The dummy variable model can be applied to develop other generalized compatible models such as tree volume equations.

• 出版日期2011-7
• 单位中国林业科学研究院