Inventory Essentials Workshops – May 7 & 9, 2018

Fundamentals and Best Practices for Forest Inventories

Impact of Silvicultural Systems – Clearcut, Seed-Tree, Shelterwood or Selection Harvest

8:00     Building Blocks of Sound Inventory Design

  1. What is a working forest inventory? Evolution over 30 years from strata averages and            yield tables to individual stand structures within strata.
  2. Why you should be cursing for inventory versus harvest. Cruising objective is to capture silvicultural growth capacity and the ability to re-merchandize as markets change.

8:30     Sample Designs – Strata

  1. Stratifying the whole forest – What are the right classifications and levels of strata
  2. Breaking the strata into unique stand polygons – Why we need unique stand identification
  3. Sampling stands within each strata for cruising – Getting the right distribution, intensity and frequency of sampling (and what about riparian buffers and set asides)

Sample Design – Plots

  1. Distributing your plots across the entire stand – Why this makes a difference
  2. Including small tree frequencies to define density
  3. How large tree frequencies define silvicultural options and asset values
  4. Defining clumpiness with systematic spatial plot patterns – impact on yield capacity
  5. Determining the right plot frequency and distribution within each stand

Noon    Lunch

1:00     Sample Design – Trees

  1. Sampling all trees of all species and sizes within each stand makes a difference
  2. Applying a combination of prism-sweep and fixed area plot designs for sampling
  3. Tally frequencies by species and size class, never by species alone
  4. When and why record tree condition and vigor class in cruise design
  5. Methods for selecting large trees height samples – why this makes a difference
  6. Estimating live crown length and percent defect in large trees
  7. When and how to measure taper
  8. When and why measure age
  9. About using a 1/20th acre fixed area circular plot for standing dead trees
  10. About using a minimum 100-foot transect line for down woody material

3:00     Cruise Compilation Methods

  1. Compiling each stand cruise versus compiling by strata – within and between stands
  2. Height estimation methods – why tree heights vary with silviculture

Expanding the Cruise to Un-sampled Stands

  1. Assigning a stand structure to un-sampled stands from an average tree list generated from sampled stands – when and why these methods are important to understand and use
  2. Do’s and don’ts of cruise expansions – methods, timing, frequency and assumptions

Year-end Updates and Reporting – Getting the sequence and components right

  1. Incorporating all new harvest units, deletions, acquisitions and boundary adjustments in GIS stand polygon layer
  2. Updating GIS road network and road class buffer widths
  3. Updating GIS stream courses and riparian buffer widths
  4. Updating all administrative, silvicultural and operational costs
  5. Run reports for year-end harvest volume and value reports
  6. Growing stands for one year from the previous year for annual growth reporting
  7. Update the inventory with all new cruises from all sampled stands within current year – identifying the actual impact of new information
  8. Producing forest-wide reports of new current standing forest inventory

5:00     Adjourn

Forest Inventory A History

Forest Inventory B Structure

Forest Inventory C Strata

Forest Inventory D Stand Size

Forest Inventory E GIS Polygons

Forest Inventory F Plots

Forest Inventory G Plots

Forest Inventory H Trees

Forest Inventory I Trees

Forest Inventory J Year_end