Monitoring Program
Timber Management
Inventory and Monitoring Information
This section is a location where resource-specific inventory and monitoring data and reports can be stored and made available for review by Forest Service and other participating agencies, as well as interested members of the public.
Background Resources
Size of Clearcuts
From the 2005 Monitoring and Evaluation Guidebook (p. 78):
The standard upper limit for individual created openings in the hemlock-sitka spruce type of coastal Alaska is 100 acres (36 CFR 219.27[d] [2])
Larger openings are allowed at the discretion of the Forest Supervisor (150-acre maximum) and the Regional Forester (200-acre maximum) when warranted (Forest wide Standards and Guidelines, Timber Sale Preparation, Size of Clearcuts [Tongass Forest Plan, p. 4-72])
From the Tongass Forest Plan:
Where it is determined by an environmental analysis that exceptions to the size limit are warranted, the actual size of openings may be up to 200 acres, if required due to natural biological hazards to the survival of residual trees and surrounding stands, and up to 150 acres for the remaining factors, with the approval of the Forest Supervisor. (Consult R10 supplement FSM 2400-2002-1.)
Allowable Sale Quantity
From the 2005 Monitoring and Evaluation Guidebook (p. 80):
Use the new timber inventory and the TIMTYP data layer to estimate low, medium, and high volume stands. Refer to Julin and Caouette 1997 for methods (Note: this article is part of Julin, K. (comp.) 1997. Assessments of wildlife viability, old-growth timber volume estimates, forested wetlands, and slope stability. GTR-PNW-392).
Modeled Implementation Reduction Factors. For each new project, upon completion, document falldown for each factor listed in the table below.
Table 7. Fall Down Factor by Administrative Area
|
Administrative Area Percent Reduction |
|||
| Chatham | Ketchikan | Stikine | |
| Land Selections | 2.0 | 2.0 | 2.0 |
| Unmapped TTRA Buffers | 2.5 | 2.5 | 2.5 |
|
Non-Commercial Forest
(applied to low volume stratum only) |
18.0 | 18.0 | 18.0 |
| Slope and Soil Conditions | 32.0 | 3.1 | 3.1 |
|
Cost Efficiency
(applied to low-volume stratum, difficult and isolated operability; medium-volume stratum isolated operability) |
100.0 | 100.0 | 100.0 |
| Riparian | 14.2 | 14.3 | 14.3 |
| Karst and Caves | 0.5 | 5.9 | 0.3 |
| Standards & Guidelines | 1.0 | 1.0 | 1.0 |