Field-verified canopy tree crown segmentation for 7,536 crowns across 147.4 hectares of tropical forest plots in the Barro Colorado Nature Monument, Panama in 2025.

This database contains 7,536 field-validated canopy tree crown segments for 147.4 hectares of mapped forest census plots in old-growth and old secondary forest in the Barro Colorado Nature Monument (BCNM), along with high-resolution (5 cm or finer) orthomosaics used for the segmentation and shape-files for the plots. The objective of this publication is to provide high-quality data for training and testing algorithms for automated crown segmentation. The dataset includes all tree crowns with a canopy area greater than 25 square meters in eight large, partially overlapping, forest census plots, one in the Gigante peninsula and the remainder on Barro Colorado Island (BCI). Initial crown segmentation was performed by the Plant Functional Ecology Laboratory (LEFO) at Université de Montréal and Mila. Crown segments were then evaluated and if necessary corrected in the field by people using iPads with the ArcGIS Field Maps app and a custom field form. The plots included are the Gigante Fertilization plot (38.4 ha), the BCI 50-ha plot, the BCI 25-ha plot, the BCI 10-ha plot, and the four 6-ha plots: AVA, Pearson, Drayton, and Zetek. The AVA plot overlaps the 10-ha and 25-ha plots, and the Drayton plot slightly overlaps the 50-ha plot. A subsequent publication will also include tree species identification, liana cover, and associated tree tag numbers for these crown segments.

本数据库包含巴拿马巴罗科罗拉多自然纪念地（Barro Colorado Nature Monument, BCNM）内原始林与次生老林的147.4公顷森林普查样地的7536个经野外验证的冠层树冠分割单元，同时附带用于该分割任务的高分辨率（5厘米及更精细）正射影像图（orthomosaics），以及样地的形状文件（shape-files）。
本数据集的发布目标是提供高质量数据，用于训练和测试自动化树冠分割算法。
数据集涵盖8个大型部分重叠的森林普查样地中所有冠幅大于25平方米的树冠，其中1个样地位于希甘特半岛，其余均位于巴罗科罗拉多岛（Barro Colorado Island, BCI）。
初始树冠分割由蒙特利尔大学植物功能生态实验室（Plant Functional Ecology Laboratory, LEFO）及Mila完成。
分割得到的树冠单元随后经野外工作人员使用搭载ArcGIS Field Maps应用与自定义野外表单的iPad进行评估，必要时予以修正。
本次收录的样地包括：希甘特施肥样地（38.4公顷）、BCI 50公顷样地、BCI 25公顷样地、BCI 10公顷样地，以及4个6公顷样地：AVA、Pearson、Drayton与Zetek。其中AVA样地与10公顷、25公顷样地存在空间重叠，Drayton样地与50公顷样地存在轻微重叠。
后续相关出版物还将附带这些树冠单元的树种识别结果、藤本覆盖度数据及对应树木的挂牌编号信息。