Moni1000_UAVLiDAR_Crowns

The dataset includes following four types of dataset obtained by UAV-LiDAR survey and field work. 1. Digital Terrain Models (DTMs, 5 cm spatial resolution) 2. Canopy Height Models (CHMs, 5 cm spatial resolution) 3. Ortho-mosaic photos (2.2-2.6 cm spatial resolution) 4. Crown polygons of each trees (4328 crowns with 151 species, stem girth at breast height from the latest Moni1000 published data, and canopy height from the dataset 2). Data were collected from 22 long-term monitoring plots (each approximenly one hector) across Japan, which are registered in the Monitoring Sites 1000 Projects under Japanese Mnistry of Environment. These plots span major climate zones (ranging from subtropical to subarctic) and forest types (evergreen conifer, broadleaf and conifer mixed deciduous broadleaf, and evergreen broadleaf forests). UAV surveys and ground-truthing filedwork for crown segments were conducted simultaneously from May 2022 to October 2023.