__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. Ecoforest maps have been produced at a scale of 1/10,000 since 2025 (previously, they were distributed at a scale of 1/20,000) and illustrate forest information for Quebec territory up to approximately the 52nd parallel. They offer an up-to-date image of the ecoforest map for the year of production. The maps represent the result of the photo-interpretation of aerial photographs taken during the most recent ecoforestry inventory of southern Quebec to which were added natural disturbances (fires, epidemics, windfalls, etc.) and forest interventions (harvesting, thinning and reforestation) carried out in the public forest following the year in which they were taken. Vegetation information specific to each stand is expressed in detailed species (AIPF) when information is available for a complete sheet. Otherwise, vegetation is expressed as a group of species. Each map at a scale of **1/10,000** covers an average area of approximately **62.5 km²** and presents forest information for the target territory. Its accuracy is approximately ± 5 m. Each map at a scale of **1/20,000** covers an average area of approximately **250 km²** and presents forest information for the target territory. Its accuracy is approximately ± 10 m. ## Descriptions of maps and components ### 2025 maps: + Scale (1/10,000); + Replacing the BDTQ level curves with those from the lidar; + Characterization of vegetation by detailed species (AIPF) or by grouping of species, depending on the availability of information; + Maps based on up-to-date ecoforest maps from the 4th and 5th inventories. ### Maps 2021 to 2024: + Scale (1/20,000); + Characterization of vegetation by detailed species (AIPF) or by grouping of species, depending on the availability of information; + Maps based on up-to-date ecoforest maps from the 4th and 5th inventories. ### 2019 and 2020 maps: + Scale (1/20,000); + Characterization of vegetation by grouping of species; + Maps based on up-to-date ecoforest maps from the 4th and 5th inventories. ### 2015 maps: + Scale (1/20,000); + Characterization of vegetation by grouping of species; + Maps based on up-to-date ecoforest maps from the 3rd and 4th inventories. ## ⚠️ Notes: + Forest codes vary depending on the inventory; **consult the legend** of the map. + The maps are **georeferenced** and optimized for printing. + **AIPF**: The AIPF (**forest stand inventory approach**) is a method used in Quebec for ecoforest stratification to classify forests according to their populations and including updates compared to previous inventories.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Deposit is the layer of loose material that covers rock. It may have been established during the retreat of the glacier at the end of the last glaciation or by other processes associated with erosion and sedimentation. The nature of the loose deposit is evaluated based on the shape of the land, its position on the slope, the texture of the soil, or other indicators. Surface deposit maps make it possible to distinguish the main categories of surface deposits, to know their nature, thickness and distribution on Quebec territory. The map of **surface deposits in the North** is a component of an extensive inventory carried out to meet knowledge acquisition needs as part of the economic, social and environmental development project “Plan Nord”. This inventory was carried out between 2010 and 2013. The mapping of surface deposits was carried out using a new approach based on remote sensing techniques. The interpretation was carried out by geomorphologists using RapidEye anaglyph (3D) satellite images with high spatial resolution (5 m). Ground and air control points allowed the validation of the interpreted information. Mapping is available throughout the country north of the 53rd parallel, which represents an area of approximately 680,000 km2. The minimum mapping area is 100 ha. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**

The bank of oblique photographs of Northern Quebec is composed of georeferenced photos taken on board planes or helicopters during flights carried out as part of the program for the acquisition of ecological knowledge in Northern Quebec as part of the economic, social and environmental development project “Plan Nord”. During these overflights, the personnel on board were equipped with high-resolution cameras connected to a satellite geolocation system (GPS). The photos obtained in this way served as control points to improve the various thematic maps. __Note:__ For the purposes of distributing this bank, the photos could be modified slightly in order to improve the shooting. Georeferencing photos on the map refers to the location of the plane or helicopter at the time the shot was taken. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. Products derived from lidar (Light Detection and Ranging) are generated as part of the provincial lidar sensor data acquisition project. It is therefore to facilitate the use of raw lidar data and optimize its benefits that the Ministry of Natural Resources and Forests (MRNF) generated and made available products derived from lidar in a user-friendly format. Lidar technology makes it possible to accurately provide information such as ground altitude, forest cover height (canopy), slopes, and contour lines. Here is the list of the five derivatives: + Digital terrain model (spatial resolution: 1 m) + Digital terrain model in shaded relief (spatial resolution: 2 m) + Canopy height model (spatial resolution: 1 m) + Slopes (spatial resolution: 2 m) + Level curve (range: 1 m) This data covers almost all of the southern part of the province. This map is distributed by map sheets at a scale of ** 1:20,000**. ⚡ If you want to download **lidar point clouds**, please consult the Quebec Lidar Data page. __ ⚠️ 1) Note that__ the resolution of the following products (digital terrain model, digital terrain model in shaded relief, canopy height model and slopes) **has been slightly degraded** when viewed in the interactive map to ensure efficient display. __ ⚠️ 2) Note that__ **the planimetric and altimeter accuracy of the curves is variable**, but inevitably lower than that of the lidar surveys used to generate them. Moreover, it is recommended to use these level curves only for visual representations, and not for quantitative analyses. **This third party metadata element was translated using an automated translation tool (Amazon Translate).**

__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__. The mapping of **insect epidemics, shelters** (trees knocked down by the wind) ** and icecry** 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).**