Annual Woody Vegetation Change Classifications 1989-1991

Vegetation change products identify locations where perennial woody vegetation changed between forest, sparse woody, and non-woody classifications annually. The dataset covers the years 1989 to 1991, produced by Landgate from Landsat imagery. Change classes include no change and transitions between non-woody, sparse, and forest states.

Use Cases

• Map forest to non-woody transitions across the 1989-1991 period to analyze deforestation.
• Analyze spatial patterns of sparse to non-woody change using annual classification layers.
• Track non-woody to forest change as a proxy for reforestation or afforestation efforts.
• Validate land cover models by comparing annual change classes against independent ground data.

Strengths

• Annual production provides consistent time-series data for change detection.
• Based on Landsat imagery with 30-meter ground pixel resolution.
• Covers a defined three-year period from 1989 to 1991.

Limitations

• Specific row/column counts, sample size, and geographic extent are not provided.
• Data is derived from satellite imagery classifications, which may contain inherent classification errors.
• The temporal coverage is limited to a short, historical three-year window.

Provenance

Source

Landgate

Collection Method

Produced from vegetation cover datasets based on Landsat imagery (30m resolution).

Time Range

1989-1991

Freshness

Metadata was last updated in March 2026, but the underlying data covers 1989-1991.

Geography

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