CF Cheat Sheet 2026

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

1. Which tool is most commonly used by foresters to establish the geographic boundaries and spatial data layers within a forest management plan? → Geographic Information System (GIS) mapping software
2. Which type of project budget reserve is held by upper management and released only when an unforeseeable event occurs that changes project scope? → Management reserve
3. Which federal law specifically governs the management of pesticide applications in forestry operations and requires that applicators follow label directions? → Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
4. In CF practice, what is a needs assessment? → A systematic process to identify gaps between current conditions and desired outcomes
5. Which soil property is most directly measured by a double-ring infiltrometer in the field? → Saturated hydraulic conductivity and infiltration rate
6. In states with a forest practice regulatory program, a forester who fails to file a required pre-harvest notification may face: → Civil penalties and a stop-work order
7. Which planning document translates a forest management plan's goals into specific, time-bounded activities with assigned resources and measurable outcomes? → Annual work plan (or operational plan)
8. In CF practice, what is a needs assessment? → A systematic process to identify gaps between current conditions and desired outcomes
9. The 'intermediate' silvicultural treatments such as thinning, pruning, and release are collectively known as what? → Stand tending operations
10. In earned value management, the Schedule Performance Index (SPI) is calculated as: → Earned Value ÷ Planned Value
11. Which habitat feature is most critical for black bear denning in the eastern United States? → Large hollow trees or root masses in dense cover
12. Which component of a GPS receiver is responsible for differentiating signals from multiple satellites to improve positional accuracy? → The internal clock maintaining precise timing for signal travel-time calculations
13. When a forester discovers that a client has been conducting unauthorized harvest on adjacent private land, the forester's ethical obligation is to: → Advise the client to stop and seek legal counsel, then withdraw if the activity continues
14. In CF practice, what is the purpose of a standard operating procedure (SOP)? → To document step-by-step instructions for routine tasks to ensure consistency and quality
15. What is the primary ecological impact of invasive earthworms (e.g., Lumbricus terrestris) in North American hardwood forests? → Rapidly consume the forest floor duff layer, disrupting native plant communities
16. In CF practice, what is a needs assessment? → A systematic process to identify gaps between current conditions and desired outcomes
17. When completing a forest management plan for a private landowner, what is the forester's first step before prescribing management activities? → Identifying and documenting the landowner's objectives and goals
18. Which practice most directly benefits neo-tropical migratory songbirds nesting in US forests? → Maintaining large blocks of interior forest with minimal edge
19. Which federal program provides financial incentives to private landowners for establishing wildlife habitat on marginal agricultural lands? → Conservation Reserve Program (CRP)
20. What is the purpose of a silvicultural prescription? → Prescribe forest treatments to meet goals
21. Which principle distinguishes a conflict of interest situation in forestry consulting? → The forester has a personal financial stake that could bias professional judgment
22. Under NEPA, which document is required when a federal action is determined to have NO significant environmental impact? → Finding of No Significant Impact (FONSI)
23. A Real Estate Investment Trust (REIT) that specializes in timberland ownership is known as a: → Timber REIT
24. What is a key goal of sustainable forest management? → Balance resource use with long-term forest health
25. Which metric would best serve as a key performance indicator (KPI) for evaluating the quality of a prescribed burn operation? → Percent of target area treated within the specified flame length range
26. A forester measures DBH for 50 trees and gets a mean of 18 cm with a standard deviation of 4 cm. What is the coefficient of variation (CV)? → 22.2%
27. A residual plot from a linear regression of tree height on DBH shows a fan-shaped pattern (variance increasing with fitted values). This indicates: → Heteroscedasticity — non-constant variance of residuals
28. Under the National Environmental Policy Act (NEPA), which document is required for federal actions that may significantly affect the environment? → Environmental Impact Statement
29. When reporting forest inventory results, the 95% confidence interval means that: → There is a 95% probability the true population mean falls within this interval
30. What is the term for the process by which nitrogen-fixing bacteria convert atmospheric nitrogen to a plant-available form? → Biological nitrogen fixation