FM Forest Planning & Resource Management 3 — Questions and Answers
Question 1: What is the purpose of a 'site index' in forest management planning?
- Measuring current standing timber volume
- Estimating site productivity based on the height of dominant trees at a reference age (Correct answer)
- Calculating the cost of road construction per site
- Ranking sites by recreational value
Correct answer: Estimating site productivity based on the height of dominant trees at a reference age
Site index is a measure of forest site productivity expressed as the expected height of dominant and codominant trees at a standard reference age (often 50 or 100 years).
Question 2: Which silvicultural system is most appropriate for shade-tolerant species that regenerate under a forest canopy?
- Clearcut system
- Seed-tree system
- Selection system (Correct answer)
- Coppice system
Correct answer: Selection system
The selection system removes individual trees or small groups while retaining an overhead canopy, creating conditions suitable for the regeneration of shade-tolerant species.
Question 3: What does 'allowable cut' or 'allowable sale quantity (ASQ)' represent in a forest plan?
- The maximum number of recreational visitors permitted annually
- The maximum volume of timber that can be offered for sale annually on a sustained-yield basis (Correct answer)
- The minimum volume required to support a local mill
- The amount of biomass removed during prescribed burns
Correct answer: The maximum volume of timber that can be offered for sale annually on a sustained-yield basis
Allowable sale quantity (ASQ) is the maximum amount of timber scheduled to be offered for sale annually from a National Forest while maintaining long-term sustained yield.
Question 4: In watershed management, what is the 'water yield' concept?
- The volume of water consumed by trees through transpiration
- The total streamflow produced from a watershed over a given period (Correct answer)
- The irrigation water available for downstream agriculture
- The groundwater recharge rate in forested areas
Correct answer: The total streamflow produced from a watershed over a given period
Water yield refers to the total quantity of streamflow (surface runoff plus subsurface flow) generated from a watershed over a defined period, often a year.
Question 5: What is 'adjacency constraint' in harvest scheduling models?
- A requirement to harvest adjacent stands in the same year
- A rule limiting the harvest of stands that border recently clearcut areas until regeneration is established (Correct answer)
- A zoning restriction preventing harvesting near roads
- A market limitation on selling timber to adjacent counties
Correct answer: A rule limiting the harvest of stands that border recently clearcut areas until regeneration is established
Adjacency constraints in harvest scheduling prevent clearcutting stands that border recently harvested areas until the earlier cutover reaches a specified height or age, protecting visual quality and wildlife habitat.
Question 6: Which of the following is a key output of a Geographic Information System (GIS) used in forest planning?
- Automated timber felling and skidding
- Spatial maps integrating layers such as timber types, soils, streams, and roads (Correct answer)
- Real-time weather forecasting for the forest
- Automated tree species identification from photos
Correct answer: Spatial maps integrating layers such as timber types, soils, streams, and roads
GIS in forest planning produces spatial maps and analyses by integrating multiple data layers including stand types, soils, hydrology, topography, and infrastructure.
Question 7: What is the primary purpose of a 'compartment' or 'management unit' in forest organization?
- A legal parcel used exclusively for taxation purposes
- A defined area used as a permanent administrative and planning unit for management activities (Correct answer)
- A fenced enclosure to protect regeneration from browsing
- A designated wilderness area closed to all timber harvest
Correct answer: A defined area used as a permanent administrative and planning unit for management activities
A compartment or management unit is a permanent, geographically defined area used to organize, plan, and record management activities across the forest.
FM Forest Planning & Resource Management 3
What is the purpose of a 'site index' in forest management planning?