Lidar Slope Classes for Southern Quebec Ecoforest Inventory

Southern Quebec's terrain slope is classified into 7 categories derived from a 10-meter resolution digital terrain model. The dataset covers the entire Southern Quebec Ecoforest Inventory territory and was created to support Forest Management Investment Program applications. The minimum polygon area is 0.2 hectares.

Use Cases

• Classify terrain into 7 slope categories (A to F, S) for ecoforestry planning and risk assessment.
• Analyze slope distribution (e.g., 'Low' 3-8%, 'Steep' 40%+) across the Southern Quebec region for land management.
• Integrate polygonal slope data with other layers using the 10-meter DTM resolution for composite landscape modeling.
• Identify summit areas (class S) completely surrounded by 'Steep' slopes for topographic feature analysis.

Strengths

• Slope is divided into 7 distinct, defined classes with clear percentage ranges.
• Derived from a digital terrain model with a 10-meter spatial resolution.
• Covers the entire territory of the Southern Quebec Ecoforest Inventory.
• Minimum polygon area is specified as 0.2 hectares, indicating a processing threshold.

Limitations

• The data provider explicitly states it is not recommended for detailed analysis.
• Metadata was translated using an automated tool, which may introduce inaccuracies.
• Sample data and specific column structure are unavailable for review.

Provenance

Source

Government and Municipalities of Québec

Collection Method

Slope classes generated from a 10m DTM, which resulted from bilinear interpolation of 1m lidar data.

Time Range

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Freshness

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Geography

Entire territory of the Southern Quebec Ecoforest Inventory (IEQM)