1. What is the i-Tree Model?

The i-Tree model is a suite of tools developed by the USDA Forest Service to quantify the environmental benefits of trees. It calculates various ecosystem services provided by urban and rural forests.

2. How Does the Calculator Work?

The calculator uses the i-Tree model to estimate:

Where:

• Tree species affects benefit calculations
• DBH (Diameter at Breast Height) determines tree size
• Location affects environmental impact factors

Explanation: The model accounts for species-specific growth patterns, local environmental conditions, and tree size to estimate benefits.

3. Importance of Tree Benefits Calculation

Details: Understanding tree benefits helps quantify the value of urban forests, guide planting programs, and justify conservation efforts.

4. Using the Calculator

Tips: Select tree species, enter accurate DBH measurement (in inches), and specify location context for most accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is DBH and how do I measure it?
A: DBH is diameter at breast height (4.5 feet above ground). Measure circumference and divide by π (3.14) to get diameter.

Q2: Why does species matter in calculations?
A: Different species have different growth rates, leaf areas, and lifespans that affect their environmental benefits.

Q3: How accurate are these estimates?
A: Estimates are based on statistical models and field data. Actual benefits may vary by 10-20%.

Q4: Can I calculate benefits for multiple trees?
A: For multiple trees, calculate each separately and sum the results for total benefits.

Q5: What other benefits do trees provide?
A: Beyond calculated metrics, trees provide wildlife habitat, aesthetic value, and psychological benefits.