Nonlinear mixed-effects height to crown base model based on both airborne LiDAR and field datasets for Picea crassifolia Kom trees in northwest China

•A mixed-effects height to crown base model (hcb) was developed using LiDAR and field datasets.•LiDAR-derived tree height, crown width and dominant height significantly contributed to the model.•The developed nonlinear mixed effects hcb model showed the best prediction performance.•Five medium trees...

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