r._NFJD_Sample_Design_Item2D_BruinExams.pdf

Item 2.D North Fork John Ranger District (Bruin Stand Exams & Brown’s Protocol)

Sample Design

Sample Selection Method

Sample Expansion

Factor COND Subpop.

Filter Subpop.

Variable

Subpop.

Minimum

Value

Subpop Maximum

Value

BAF TBD - ALL DBH 5.0 999

FRQ 100 - LIVE DBH 0.10 4.99

OR LIVE HGT 0.50 4.49

TRN 27 DOWN DIA 3.0 999.9

TRN 7 DOWN DIA 1.0 2.99

TRN 7 DOWN DIA 0.1 0.99

• Select a Basal Area Factor (BAF) on the variable radius plot that will tally a total between 4 and 8 trees (live and dead) that are over five inches DBH.

• Fixed radius plot (FRQ) of 1/100 acre (11.8 feet) for live trees 0.10 – 4.99 inches DBH, or

0.50 – 4.49 feet in height. Similar sized trees can be group tallied (for instance, if there are 20 seedlings each approximately 2.5 feet tall, this can be recorded in the CSE program on one line with the TREE COUNT (TCnt) field set to 20)

• Brown’s Protocol (Planar Intercept): sample on a 27 – foot transect (TRN), record all down material with an intersection diameter of ≥ 3.0 inches; sample on a 7 – foot transect, record all down material with an intersection diameter between 1 and 3 inches; sample on a 7 – foot transect, record all down material with an intersection diameter between 0.1 and 0.99 inches

Tree Data – (Extensive Plot). The following fields shall be completed for each sampled tree. For information needed to complete these fields, refer to the User Guide. Tolerances listed in measurable standards supersede those found in the User Guide if differences are found.

Plot Number Required Tag ID (Tree) Number Required Tree Status Required Site/GST Tree (GST Only)1 Required Tree Species Required Tree Count Required DBH/DRC (Record all to nearest 1/10th of an inch) Required Height Required Height to Crown Required Radial Growth (GST Only) Required Height Growth (GST Only) Required Age (GST Only) Required Crown Ratio Required Crown Class Required Damage Category Required Damage Severity Required Log/Snag Decay Required

1 See CSE User Guide on sampling procedures/protocols for collecting Growth Sample Tree (GST) data.

Planar Intercept (Brown’s Protocol - Extensive Plot). The following fields shall be completed for each sample transect on each plot. For information needed to complete these fields, refer to the User Guide.

Tolerances listed in measurable standards supersede those found in the User Guide if differences are found.

Plot Number Required 1st Duff Required 2nd Duff Required Fuel Depth Required Twig1 (0-.24) Required Twig 2 (.25-.99) Required Twig 3 (1.0 – 2.99) Required Piece Count Required Decay Class Required Diameter Required