Reference data on bark beetle infestations in Trentino (Italian Alps)

<p>Reference data about the bark-beetle infestations&nbsp;in the Trentino province (Italy) covering the 2019-2022 years.</p><p>The reference data were generated by manual photointerpretation of Planet imagery (i.e., monthly Planet basempas) and are provided in two datasets, a point-based one and a polygon-based one. A detailed description of the two datasets is provided in D. Marinelli, M. Dalponte, L. Frizzera, E. Næsset, D. Gianelle, "<a href="https://www.sciencedirect.com/science/article/pii/S0034425723004030">A method for continuous sub-annual mapping of forest disturbances using optical time series</a>", Remote Sensing of Environment 299, 113852.</p><p>The GeoPackage file contains three layers. Here we provide the layers with name and description of each field:</p><ul><li><strong>Point-based dataset</strong>:<ul><li><i>fid</i>: feature id;</li><li><i>is_disturbed</i>: boolean set to true if the point has been labelled as disturbed.</li></ul></li><li><strong>Polygon-based dataset</strong>;<ul><li><i>fid</i>: feature id;</li><li><i>study_area_fid</i>: id of the study area;</li><li><i>survey_detection_year</i>: year of the first detection by photointerpretation;</li><li><i>survey_detection_month</i>: month of the first detection by photointerpretation.</li></ul></li><li><strong>Study areas (polygon-based dataset)</strong>.<ul><li><i>fid</i>: id of the study area.</li></ul></li></ul><p>&nbsp;</p>