SAF Cheat Sheet 2026

The 30 highest-yield SAF facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is multi-factor authentication in SAF security? → Requiring two or more verification factors for access
2. A silvicultural prescription that specifies leaving 15% of the stand basal area as 'legacy trees' after harvest is primarily designed to: → Maintain structural and biological legacies that accelerate old-forest habitat recovery
3. In benefit-cost analysis for public forestry projects, 'transfer payments' such as government subsidies should be treated as: → Neither costs nor benefits because they are redistributions within society
4. Which soil texture class has the highest water-holding capacity per unit volume? → Silty clay loam
5. A forester establishes 20 fixed-area plots, each 1/10 acre, and tallies 400 trees total. What is the estimated trees per acre? → 200 trees/acre
6. In forest mensuration related to silviculture, 'site index' is defined as the average height of dominant and codominant trees at what reference age? → 50 years
7. In forest operations research, the traveling salesman problem (TSP) framework is most directly analogous to which silvicultural planning challenge? → Scheduling regeneration harvests across a landscape to minimize road travel distance
8. Under the FIA (Forest Inventory and Analysis) national design, what type of sampling design is used for annual inventory? → Systematic grid with rotating panels
9. The Faustmann formula in forest economics determines the rotation age that maximizes: → Land Expectation Value across an infinite series of rotations
10. What does adaptive management involve? → Making decisions based on updated data
11. Which term describes the layer of vegetation beneath the forest canopy? → Understory
12. What is the recommended minimum width for a riparian buffer zone on perennial streams in most state forestry BMP guidelines? → 50 feet on each side
13. Which of the following BEST describes 'adaptive management' as applied in EIA and project monitoring? → An iterative management approach that adjusts actions based on monitoring outcomes
14. A timber company operating on private land in a state with a delegated NPDES program must obtain stormwater discharge permits from which authority? → The state environmental agency
15. Which type of effect must be analyzed in an EIA but is often most challenging to quantify in forest management contexts? → Cumulative effects from multiple overlapping actions over time
16. Which sampling method is most appropriate when rare or clustered species need targeted detection across a large landscape? → Adaptive cluster sampling
17. The National Forest Management Act (NFMA) of 1976 requires national forests to develop which primary planning document? → Land and Resource Management Plan (Forest Plan)
18. What is change management in SAF technology? → A structured process for evaluating and implementing changes safely
19. Which principle of sustainable forestry requires that the rate of timber harvest not exceed the rate of forest regeneration over the long term? → Non-declining even flow
20. State forest practice acts primarily regulate timber harvesting on which category of land? → Private and state-owned forestland
21. The 'umwelt' concept applied to wildlife-inclusive forest management suggests foresters should: → Consider the sensory and perceptual world of target species when designing habitat
22. What does forest mensuration involve? → Measuring tree and stand attributes
23. What tool is commonly used to measure tree height? → Clinometer
24. What is the primary purpose of using a clinometer in forest inventory? → Measuring tree height by recording vertical angles
25. In sustainable forest management, 'growing stock' refers to: → The total volume or basal area of live trees on a given forested area
26. In a forest stand subject to chronic browsing pressure from white-tailed deer, a forester is most likely to observe which long-term vegetation change? → Shift toward browse-resistant species like hay-scented fern and spicebush
27. What term describes the re-establishment of a native species in an area where it has been extirpated but where suitable habitat still exists? → Reintroduction
28. Beech bark disease results from a complex interaction between which two organisms? → Nectria fungus and beech scale insect
29. When restoring a degraded riparian zone, which practice BEST addresses both bank stability and habitat complexity simultaneously? → Large wood placement combined with native riparian plantings
30. What is the purpose of monitoring in forest resource management? → To evaluate and improve management actions