Epidemic, windfall and ice
The link: Access the data directory is available in the sectionDataset Description Sheets; Additional Information. The mapping of insect epidemics, windfalls (trees knocked down by the wind) and ice is produced as part of the ecoforestry inventory of southern Quebec in order to maintain an up-to-date portrait of the forest. It covers the commercial territory of public and private forests in Quebec. The minimum mapping area is 0.1 ha. This portrait is useful, among other things, for evaluating the intensity and extent of damage associated with insects, windfalls and ice. In each case, the mapping represents the loss of forest cover in the form of disturbances ranging from severe (over 75% of dead trees) to slight disturbances (from 25 to 75% of dead trees). The disturbances in this map date back to the beginning of the century (when information is available) to the present day. They are the result of collaboration between the Directorate of Forest Protection and the Directorate of Forest Inventories. The outlines come from forest inventories (first and second decennial inventories) and ecoforestry inventories (third and fourth decennial inventories). Mortality is dated using defoliation layers from the Directorate for Forest Protection. For the epidemic of TBE (spruce budworm), mortality is considered to occur after a succession of five years or more of severe or moderate defoliation. In the case of the surveyor, a single year is enough to decimate a forest stand. The other elements in the layer are dated using LANDSAT imagery, sample plots, and archival documents.This third party metadata element was translated using an automated translation tool (Amazon Translate).
Made available by the Government and Municipalities of Québec
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- Publisher - Current Organization Name: Government and Municipalities of Québec
- Licence: Creative Commons 4.0 Attribution (CC-BY) licence – Quebec
Data and Resources
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Epidemic, windfall and ice storm (since 1976)FGDB/GDBFrench dataset FGDB/GDB
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Epidemic, windfall and ancient ice (before 1976)FGDB/GDBFrench dataset FGDB/GDB
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Epidemic, windfall and ice storm (since 1976)GPKGFrench dataset GPKG
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Epidemic, windfall and ancient ice (before 1976)GPKGFrench dataset GPKG
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Open forestHTMLFrench dataset HTML
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Open forestHTMLFrench dataset HTML
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Original metadata (https://www.donneesquebec.ca)HTMLFrench dataset HTML
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Procedures for using a web servicePDFFrench guide PDF
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READ ME Epidemic, windfall and ice storm (since 1976)PDFFrench guide PDF
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READ ME Epidemic, windfalls and ancient ice (before 1976)PDFFrench guide PDF
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Data downloadPDFFrench guide PDF
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Fact sheet of attributes and their areas of valueXLSFrench dataset XLS
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Tools and guides for preparing data in ArcGISZIPFrench dataset ZIP
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Web mapping serviceotherFrench dataset other
Contact Information
Electronic Mail Address: renseignements@mrnf.gouv.qc.ca