Timber Access

Although there are a number of harvesting systems available for implementation within the South Chilcotin Sub-Regional Plan planning area, it is neither the intent nor the function of this section to describe them to the reader. This section, ‘Timber Access’, addresses nothing more than operational access to the land base. That is, it describes:

  • What percentage of the land base is available for development
  • Where the authority is from which timber access is derived; and
  • What form (i.e. modified versus conventional) its distribution shall be across the landscape.

Cariboo-Chilcotin Land Use Plan Direction

Forest development objectives within the South Chilcotin Special Resource Development Zone (SC SRDZ) portion of the SC planning area shall recognize direction supplied in Appendix 5, Section 3 of the CCLUP document.

Appendix XII of the CCLUP Final Integration Report (the ‘Integration Report’) dated April 6, 1998, provides a comparison of the subunit targets contained in Appendix 3 of the CCLUP 90 Day Implementation Process Final Report (CCLUP) to those developed during the integration process. For the South Chilcotin Special Resource Development Zone (SRDZ) and the Gaspard Enhanced Resource Development Zone (ERDZ) – the subunits that encompass the area of the SC Plan – the Integration Report quotes the following numbers.

Subunit Integration Report
Modified Extended Modified EEA No-Harvest EEA
South Chilcotin 31% 9% 7% 16%
Gaspard 7% 3% 11% 14%

Definitions

  • Equivalent Excluded Area or EEA is the common unit used to measure the impact of nontimber strategies on timber access. EEA is based on the difference between a strategy rotation age and the base (normal) rotation age. As an example, if a prescription implies an extended rotation of 160 years for a stand in which the normal rotation age is 80 years, then the EEA would be 0.5 (i.e. 1 – (80/160)) multiplied by the strategy area. In this example, 50% of the strategy area would be unavailable for harvest during a normal rotation. EEA represents the equivalent excluded area by subunit and is derived by combining the Modified Extended impact to the No-Harvest impact.
  • Rotation Age or Rotation is the planned number of years between the formation or regeneration of a tree crop or stand and its final cutting at a specified stage of maturity. It can be based on physical, biological, pathological or economic criteria. For the purposes of implementing the SC Plan, CCLUP defined rotation as the minimum harvest age by tree species for the Cariboo Forest Region. That is, 80 years for stands in which lodgepole pine (Pli) are the leading species and 120 years for those stands that are comprised of other leading species.
  • Modified Extended is the percentage area by subunit that, based on the results of the long-term analysis, will require a management prescription that extends the rotation beyond normal.
  • Modified EEA is the equivalent excluded area impact by subunit attributable to the Modified Extended area. For example, in the South Chilcotin SRDZ, the 31% of the subunit that is under some form of modified harvest represents an equivalent No-Harvest area of 9%.
  • No-Harvest refers to the percentage area by subunit that, based on the results of the long-term analysis, will not be harvested over a rotation. This area includes the estimated impact of RMZs, OGMA and other land exclusions within the planning area.

South Chilcotin Timber Access

Timber Access Targets

In recognition of the above, the following access targets were derived for the area encompassed by the SC Plan (see Appendix V).

Subunit SC Planning Area
EEA
South Chilcotin 16.30
Gaspard 12.31
(Please see Section 4.4: Biodiversity)

Equivalent Excluded Area (EEA) calculations for the SC planning area are the result of access netdowns due to non-timber management strategies developed by the Table and are presented as management assumptions modeled in SC Appendix V Scenario 5 Final dated February 9th, 1999.

As indicated in the CCLUP, there is joint sign-off of Forest Development Plans – to the extent they apply to SRDZ areas within the SC planning area – by the Statutory Decision Maker (SDM) of the MOF and MELP. Consistent with their authority, the SDMs have indicated that they accept Section 4 of the Integration Report, as approved by the RRB and IAMC, as appropriate advice and direction for achieving the overall objectives of the CCLUP. SDM direction as it pertains to the Integration Report and timber access targets may be found in the Statutory Decision Maker Direction to Operational Plan Proponents document dated April 30,1998.

Although Section 4 of the Integration Report provides appropriate advice and direction for achieving the overall objectives of the CCLUP, the Integration document also provides valuable guidance as it relates to the development of a timber access impact model for the SC planning unit. That is:

  1. Non-timber impacts on timber access shall be based on management prescriptions developed by the SC planning group.
  2. Each non-timber strategy shall be analyzed and the prescription shall be translated into an implied rotation age. If a strategy requires that stands be retained beyond the base rotation age, a resultant impact to timber access shall be calculated via an EEA. In simple terms, the longer the strategy rotation ages the greater the impact on timber access.
  3. EEA impacts shall be considered incremental to current silvicultural systems in practice. For the purposes of this analysis, the following prescriptions are assumed to be normal forest management practices: even-aged management for all conifer species excluding Douglas fir; and, uneven-aged management for Douglas fir leading stands.
  4. Silvicultural Systems (SS) that have the potential of being implemented within the SC planning area include:
    1. Single Tree Selection: a silvicultural system (SS) in which age classes are created or maintained through the removal of individual stems of all diametre classes uniformly throughout the stand.
    2. Group Selection: an uneven-aged SS that removes trees to create openings within the stand that are less than or equal to twice the height of representative mature stems.
    3. Shelterwood: a SS where trees are removed in a series of cuts designed to achieve a new even-aged stand under the shelter of remaining trees.
    4. Patch Cutting: a SS that creates openings less than one hectare in size. Each opening is intended to be managed as a distinct even-aged unit.
    5. Clearcut: an even-aged SS that removes the entire stand of trees during a single harvesting operation. Openings are one hectare or greater and at least two tree heights in width.
    6. Partial Cutting: a SS in which only selected trees are harvested. Seed Tree, Shelterwood, Single Tree and Group Selection, and Clearcutting with reserves are examples of a Partial Cutting system.
  5. The current species distribution is assumed to remain constant over time (i.e. stand conversion is not assumed to occur within the planning area).
  6. Where draft Landscape Units are partially located within Protected Areas, the productive forest land base within the protected area is assumed to contribute to Old Seral requirements within that unit.

Further to the above and within the area of the plan, the following assumptions are made as they pertain to EEA calculations:

  1. They apply to the productive forest land base of the applicable CCLUP subunit. The productive forest land base equates to the total area of Crown forest within the SC plan area determined by subtracting the following:
    1. All non-Crown land;
    2. All Crown land committed to non-timber use through a Land Act designation;
    3. All non-forest Crown land; and,
    4. All forest area classified as brush or non-commercial cover in the forest inventory.
  2. They include all impacts associated with the application of management prescriptions developed by the Table.
  3. They include all impacts associated with management constraints detailed in the Forest Practices Code of British Columbia Act (FPC); and
  4. They are consistent with those detailed in the CCLUP as modified by the Integration Report, and ultimately by the SC analysis process.

It is assumed by the Table that the ‘Implementation and Monitoring Committee’, when established by the IAMC and RRB, will examine Forest Practices Code impacts to ensure that legislative constraints are not incremental to EEA targets developed for the SC planning area. Further to this and in the context of operational planning, the Table also assumes that the ‘Implementation and Monitoring Committee’ will document instances where developmental activity is constrained beyond those levels prescribed and predicted by the Table: those instances where operational realities are not accurately reflected by SC Plan modeling assumptions. Where either of these situations exist, it is expected that the ‘Implementation and Monitoring Committee’ will produce and supply appropriate resolution recommendations to the IAMC/RRB.

Timber and Silviculture

Objectives Management Direction/Strategies Measures of Success/Targets Intent
1. Maintain timber access within the South Chilcotin SRDZ subunit and the Gaspard ERDZ subunit that accurately reflects the results of Scenario 5 Final. 1.1 Within the South Chilcotin SRDZ subunit and the Gaspard ERDZ subunit, implement harvesting and access management plans in a manner consistent with consensus strategies developed for the area.
2. Prescribe silvicultural prescriptions and implement harvesting regimes in a manner consistent with management strategies developed for the SC Plan. 2.1 Harvesting activities are not to be proposed within areas that have been excluded from the operable land base (e.g. riparian reserves, OGMA, Big Basin). Where harvesting activities are proposed in areas that are subject to the constraints of sector strategies, management prescriptions must recognize consensus recommendations developed by the Table. Access and operations proposed on the residual land base shall be governed and guided by the FPC.
3. Pursue enhancement activities in the Gaspard ERDZ portion of the SC planning area that, among other things, increases the productivity of the forests within the subunit. (CCLUP: Pg 7). 3.1 Management opportunities that increase wood quality and/or fiber yield should be pursued where it is feasible to do so.
4. Timber development within the South Chilcotin SRDZ portion of the SC planning area should focus in the central region of the polygon. (CCLUP: Page 87). 4.1 Although the operational area extends beyond the central region of the South Chilcotin SRDZ subunit, initial planning work should focus on the central portion of this polygon.
5. Within the Gaspard ERDZ portion of the SC planning area, the primary restriction to timber development shall be in the southwestern portion of the polygon. (CCLUP: Page 131). 5.1 Within the Gaspard ERDZ portion of the SC planning area, timber development shall proceed in a fashion that adheres to spatial constraints developed by the Table.
6. To ensure that the natural disturbance patterns for the SC planning area are maintained over the rotation; manage the temporal and spatial distribution of cut and leave areas in accordance with the patch size distribution described in the FPC.Biodiversity Guidebook for each Natural Disturbance Type. 6.1 Consistent with the FPC and the FPC Biodiversity Guidebook, prepare operational plans in such a way that they include a range of block sizes.
Although Section 11(1)(b) of the FPC Operational Planning Regulation indicates that the maximum cutblock size for the Cariboo Forest Region must not exceed 60 hectares, Section 11(3)(b)(ii) of the FPC Operational Planning Regulation and Sections 9(2)(e) and (f) of the FPC Timber Harvesting Regulation permit larger openings where they are proposed to salvage timber, where they are proposed in a manner consistent with the intent of Biodiversity management and where they have been authorized by the District Manager and, if applicable, the Designated Environment Official.
A patch is defined as a stand that differs in age from adjacent patches by more than 20 years and refers to either a natural disturbance opening that led to an even-aged forest or an opening that was created by a cut block.
7. Operational activity should control vehicle access and minimize the disturbance to wildlife. 7.1 Operational development should be designed and implemented in a fashion consistent with the SC access management strategy. The length of time between disturbances should be lengthened – wherever possible – to allow time for recolonization and recovery of wildlife populations. In general, the ‘Get In and Get Out’ approach is recommended for identifiable units in the area (e.g. well defined drainage’s and/or operating areas).