Forest Area Losses and Gains in Montérégie from 2020 Orthophotos

Forest area changes in the Montérégie region were mapped using spring 2020 orthophotos. The project covers the territories of Haut-Saint-Laurent, Haute-Yamaska, Roussillon, Rouville, Vaudreuil-Soulanges, and the Longueuil agglomeration. It was funded by component 2.2 of the MAMAH Regions and Rurality Fund.

Use Cases

• Analyze spatial patterns of forest loss and gain across the specified MRC territories using SHP geometry data.
• Validate land cover change models by comparing 2020 orthophoto-derived classifications with prior datasets.
• Assess regional forest change for municipal planning in the Montérégie administrative region.

Strengths

• Data derived from spring 2020 orthophotos, providing a consistent aerial imagery source.
• Covers multiple Regional County Municipalities (MRCs) and the Longueuil agglomeration in Québec.
• Available in multiple formats including SHP for GIS analysis and PDF for documentation.

Limitations

• Specific row counts, column attributes, and dataset size are unknown, limiting pre-analysis assessment.
• Relies on an automated translation for metadata, which may introduce inaccuracies in description.
• Temporal coverage is anchored to 2020 imagery, potentially missing recent changes.

Provenance

Source

Government and Municipalities of Québec

Collection Method

Updates made using orthophotos from spring 2020.

Time Range

Spring 2020 (imagery source).

Freshness

Metadata was last updated in March 2026, but underlying imagery is from 2020.

Geography

Montérégie region, specifically the MRCs of Haut-Saint-Laurent, Haute-Yamaska, Roussillon, Rouville, Vaudreuil-Soulanges, and the Longueuil agglomeration.