p._HP_Sample_Design_Items1Dthru2C.pdf

Stand Exams – Heppner Ranger District 2010

Sample Design

Quick Plot

• Variable radius plot using a basal area factor (BAF) of 10 for live and dead trees at least 5.0 inches diameter at breast height (DBH).

• Fixed radius plot of 1/75 acre (13.6 foot radius) for live trees 0.01 – 4.99 inches DBH, or 0.50 – 4.49 feet in height. Similar sized trees can be grouped together (for instance, if there are 20 seedlings each approximately 2.5 feet high, this can be recorded in the CSE program on one line with the TREE COUNT (TCnt) field set to 20)

• Fuel photo series for down woody debris.

Sample Item

Sample Selectio n Method

Sample Expansion

Factor COND Subpop.

Filter Subpop.

Variable

Subpop.

Minimum

Value

Subpop Maximum

Value

TREE BAF 10 - LIVE DBH 5.0 999.99

OR DEAD DBH 5.0 999.99

TREE FRQ 75 - LIVE HGT 0.5 4.49

OR LIVE DBH 0.5 4.99

DWNWDY FRQ 1 DOWN DIA 0.01 0.25

OR DOWN DIA 0.26 1.0

OR DOWN DIA 1.10 3.0

OR DOWN DIA 3.10 9.0

OR DOWN DIA 9.10 20

OR DOWN DIA 20.1 99.9

Tree Data – (Quick 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.

Tag (Tree) Number Required Status Required Tree Class Required Species Required Tree Count Required DBH/DRC (Record all to nearest 1/10th of an inch)

Required

Height one co-dominant tree per plot

Height to Base Live Crown Required Crown Ratio Required Crown Class Required

Wildlife Use Required Log/Snag Decay Required Damage Category (Record 3 damage codes maximum)

Required

Damage Agent Required Damage Severity Required Damage Part Required

Extensive Exam

• Variable radius plot using a basal area factor (BAF) of 10 for live and dead trees at least 5.0 inches diameter at breast height (DBH).

• Fixed plot of 1/75 acre (13.6 foot radius) for live trees 0.01 – 4.99 inches DBH, or 0.50 – 4.49 feet in height. Similar sized trees can be grouped together (for instance, if there are 20 seedlings each approximately 2.5 feet high, this can be recorded in the CSE program on one line with the TREE COUNT (TCnt) field set to 20)

• Fuel photo series for down woody debris.

Sample Item

Sample Selection Method

Sample Expansion

Factor COND Subpop.

Filter Subpop.

Variable

Subpop.

Minimum

Value

Subpop Maximum

Value

TREE BAF 10 - LIVE DBH 5.0 999.99

OR DEAD DBH 5.0 999.99

TREE FRQ 75 - LIVE HGT 0.5 4.49

OR LIVE DBH 0.5 4.99

DWNWDY FRQ 1 DOWN DIA 0.01 0.25

OR DOWN DIA 0.26 1.0

OR DOWN DIA 1.10 3.0

OR DOWN DIA 3.10 9.0

OR DOWN DIA 9.10 20

OR DOWN DIA 20.1 99.9

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.

Tag (Tree) Number Required Status Required Tree Class Required Species Required Tree Count Required DBH/DRC (Record all to nearest 1/10th of an inch)

Required

Height one co-dominant tree per plot Height to Base Live Crown Required Crown Ratio Required Crown Class Required Wildlife Use Required Log/Snag Decay Required Damage Category (Record 3 damage codes maximum)

Required

Damage Agent Required Damage Severity Required Damage Part Required