Specific leaf area, biomass equations and leaf area equations for European tree species

The data set contains specific leaf area data, biomass equations and leaf area equations for 24 European tree species and 3 introduced species. This includes 868 equations from the literature and 105 raw data sets that were either from the literature or our own data. The number of biomass or leaf area measurements used to produce the equations or included as raw data was > 60,000. The specific leaf area data was also obtained from the literature. The equations were used to produce pseudo-observations of mass or leaf area and were combined with the raw data sets to develop new “general” equations for each species and biomass component (foliage, branch, stem, root, aboveground) that can account for factors describing stand structure and age by including those factors as independent variables. These general equations are provided in separate worksheets of this dataset. The main findings and methodology are described in Forrester et al. (in review). Forrester, D. I., Tachauer, I. H. H., Annighoefer, P., Barbeito, I., Pretzsch, H., Ruiz-Peinado, R., Stark, H., Vacchiano, V., Zlatanov, T., Chakraborty, T., Saha, S., Sileshi, G. W. in review. Biomass and leaf area allometric equations for European tree species incorporating stand structure and tree age.

本数据集涵盖24种欧洲树种与3种引种树种的比叶面积（specific leaf area）数据、生物量方程及叶面积方程。其中包含868个源自公开文献的方程，以及105份原始数据集——这些原始数据集部分取自公开文献，部分为团队实测所得。用于构建上述方程或作为原始数据收录的生物量、叶面积测量样本量超过60000份。比叶面积数据同样来源于公开文献。

研究人员借助上述方程生成生物量或叶面积的伪观测值，并将其与原始数据集相结合，针对每个树种的各生物量组分（叶、枝、干、根、地上部分）开发全新的“通用”方程；此类通用方程可通过引入林分结构与树龄作为自变量，实现对这两类影响因子的量化考量。本数据集的单独工作表中收录了这些通用方程。

本研究的主要发现与方法详见Forrester等人（已投稿待刊）的成果：Forrester, D. I., Tachauer, I. H. H., Annighoefer, P., Barbeito, I., Pretzsch, H., Ruiz-Peinado, R., Stark, H., Vacchiano, V., Zlatanov, T., Chakraborty, T., Saha, S., Sileshi, G. W. 已投稿待刊. 纳入林分结构与树龄因子的欧洲树种生物量及叶面积异速生长方程.