GlobalGeoTree: A Multi-Granular Vision-Language Dataset for Global Tree Species Classification

• URL: http://arxiv.org/abs/2505.12513v2
• Date: Sun, 25 May 2025 14:29:15 GMT
• Title: GlobalGeoTree: A Multi-Granular Vision-Language Dataset for Global Tree Species Classification
• Authors: Yang Mu, Zhitong Xiong, Yi Wang, Muhammad Shahzad, Franz Essl, Mark van Kleunen, Xiao Xiang Zhu,
• Abstract summary: We introduce GlobalGeoTree, a comprehensive global dataset for tree species classification.<n>GlobalGeoTree comprises 6.3 million geolocated tree occurrences, spanning 275 families, 2,734 genera, and 21,001 species.<n>We aim to establish a benchmark to advance tree species classification and foster innovation in biodiversity research and ecological applications.
• Score: 21.705561682467152
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Global tree species mapping using remote sensing data is vital for biodiversity monitoring, forest management, and ecological research. However, progress in this field has been constrained by the scarcity of large-scale, labeled datasets. To address this, we introduce GlobalGeoTree, a comprehensive global dataset for tree species classification. GlobalGeoTree comprises 6.3 million geolocated tree occurrences, spanning 275 families, 2,734 genera, and 21,001 species across the hierarchical taxonomic levels. Each sample is paired with Sentinel-2 image time series and 27 auxiliary environmental variables, encompassing bioclimatic, geographic, and soil data. The dataset is partitioned into GlobalGeoTree-6M for model pretraining and curated evaluation subsets, primarily GlobalGeoTree-10kEval for zero-shot and few-shot benchmarking. To demonstrate the utility of the dataset, we introduce a baseline model, GeoTreeCLIP, which leverages paired remote sensing data and taxonomic text labels within a vision-language framework pretrained on GlobalGeoTree-6M. Experimental results show that GeoTreeCLIP achieves substantial improvements in zero- and few-shot classification on GlobalGeoTree-10kEval over existing advanced models. By making the dataset, models, and code publicly available, we aim to establish a benchmark to advance tree species classification and foster innovation in biodiversity research and ecological applications.

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