Land Degradation Yield Loss Calculator

Inputs Trajectory

Define your 10-year soil trajectory

This model combines three common degradation drivers into an annual yield drag: erosion salinity soil organic matter depletion. You can also model a restoration program that improves soil health over time.

Region / Country name (optional)

Baseline annual production (Year 0)

Starting output before degradation effects accumulate.

Production unit

Erosion yield drag (%/yr)

Loss from topsoil erosion & structure decline.

Salinity yield drag (%/yr)

Irrigation salts, waterlogging, poor drainage.

Soil health drag (%/yr)

Organic matter depletion, compaction, biology loss.

Additional climate stress (optional %/yr)

Use for compounding heat/drought risk not captured elsewhere.

Restoration starts in year

When soil rehab practices are implemented.

Restoration yield improvement (%/yr after start)

Improvement from cover crops, compost, drainage, leaching, etc.

Restoration cap (max % recovery vs Year 0)

Limits recovery realism (e.g., can recover up to +10% vs baseline).

Optional: crop value per metric ton

Used to estimate value of lost output (same currency).

Discount rate (%/yr) for 10-year value (optional)

If unsure, 5–10% is a common planning range.

Some values were out of range and were clamped to valid limits.

Model logic: annual yield is multiplied by (1 − total drag) each year. After restoration starts, we add a recovery factor up to a cap. This creates a transparent “do nothing vs restore” trajectory.

Results 10-year view

10-year output projection

Compare cumulative production under “do nothing” vs restoration. See year-10 output and total losses avoided.

Year 10 output (do nothing)

—

end of horizon

Year 10 output (restoration)

—

end of horizon

10-year cumulative output (do nothing)

—

total over 10 years

10-year cumulative output (restoration)

—

total over 10 years

Total loss avoided by restoration

—

difference (restore − do nothing)

Net degradation drag

—

annual yield drag

Year	Do nothing	Restoration
—

Value of avoided loss (NPV)

—

if price provided

Total value loss (do nothing)

—

10-year value gap vs Year 0 baseline

Narrative summary

Enter values to see a narrative summary.

Want the next upgrade? We can add soil-test inputs (EC, SOM, pH), crop-specific salinity thresholds, and a restoration cost module for ROI.