Eucalypt is one of the most-planted broadleaf genera around the globe, exhibiting high yield, plasticity and growing capacity on a broad range of environments. The main objective of this study is to present the integration of a specific module for eucalypt short-rotation plantations into ECOSMOS (Ecosystem Model Simulator). Different calibrations and validations, from intensively monitored sites, experimental networks, and plots in commercial stands were performed. We calibrated all ECOSMOS model biophysical and physiological parameters for the Eucalyptus module using three micrometeorological experiments. A generic genotype was calibrated and applied to evaluate the model performance in response to contrasting environments and genotypes, on a dataset from an experimental network with high Genotype x Environment interactions. The model was applied over commercial eucalypt plantations sites, where re-calibration was necessary for four parameters of the ECOSMOS-Eucalyptus module related to leaf carbon allocation and specific leaf area, because of significant differences in genotypes and management among datasets. Results showed the consistency of the biophysical and physiological processes solved by the model, simulated energy and carbon fluxes, soil water dynamics, and growth of different plant components when compared with observations; Nash-Sutcliffe efficiency (NSE) of 0.93, 0.43 and 0.27 for net radiation, net ecosystem exchange and evapotranspiration, respectively were obtained for the validation dataset. The generic genotype calibration varied greatly in simulating the eucalypt stem growth of the 26 locations. The generic calibration can be used as reference for eucalypt plantation’ areas in Brazil; however, a re-calibration is recommended for operational applications to adjust the ECOSMOS-Eucalyptus module to the management conditions, management practices and genotypes used by companies.

桉树是全球种植最多的阔叶树属之一，在广泛的环境中表现出高产、可塑性和生长能力。本研究的主要目的是介绍将桉树短叶种植园的特定模块集成到 ECOSMOS（生态系统模型模拟器）中。进行了来自密集监测站点、实验网络和商业摊位地块的不同校准和验证。我们校准了桉树的所有 ECOSMOS 模型生物物理和生理参数模块使用三个微气象实验。在来自具有高基因型 x 环境交互的实验网络的数据集上，校准并应用通用基因型来评估模型性能以响应对比环境和基因型。该模型应用于商业桉树种植园，需要对 ECOSMOS-桉树的四个参数进行重新校准模块与叶碳分配和特定叶面积相关，因为数据集之间的基因型和管理存在显着差异。结果表明，模型求解的生物物理和生理过程、模拟的能量和碳通量、土壤水分动态以及不同植物成分的生长与观察结果相比具有一致性；对于验证数据集，净辐射、净生态系统交换和蒸发量的 Nash-Sutcliffe 效率 (NSE) 分别为 0.93、0.43 和 0.27。在模拟 26 个地点的桉树茎生长时，通用基因型校准差异很大。通用校准可作为巴西桉树种植区的参考；但是，建议对操作应用进行重新校准，以调整 ECOSMOS-Eucalyptus模块用于公司使用的管理条件、管理实践和基因型。