Silviculture prescriptions must provide the following soil conservation information:
A silviculture prescription must record these five soil disturbance hazard ratings and the overall soil sensitivity rating, by SU, in accordance with the soil conservation guidebooks.
Note: Excavated or bladed skid trails required for repeated stand entries are classed as permanent access structures.
The Soil Conservation Guidebook provides definitions and guidance in deriving this figure.
Where temporary access structures are identified in a silviculture prescription, any rehabilitation measures must be described as outlined in the following section on rehabilitation measures and the area must be regenerated to prescribed stocking standards.
The silviculture prescription must indicate the general locations where bladed or excavated trails may be constructed, the approximate spacing between trails, the maximum depth and width that trails may be cut into mineral soil and the maximum gradient of trails.
General location may be the whole cutblock, an SU, a specific hillside or a slope description (e.g., less than 60% slope). Details of trail location and specific construction requirements will be provided in the logging plan.
The Soil Conservation Guidebook provides further details on how to describe these trails.
This requirement includes two figures.
The Soil Conservation Guidebook provides details on how to derive these figures.
The district manager may authorize the holder of a licence to temporarily exceed the maximum soil disturbance limits prescribed. In such cases, the rehabilitation measures required to bring the disturbance back within the prescribed limits must be included in the prescription.
This requirement refers to the rehabilitation and reforestation of temporary access structures.
Rehabilitation measures taken to protect other resource values should be described as “actions to accommodate other resources” under the appropriate part of the previous section. Examples of this type of rehabilitation might include ripping and seeding of landings for range use and clean-up of watercourses for maintaining water quality.
The Fire Management Guidebook provides details on how to derive these figures.
Figure 5. Example of soil conservation section.
Proportion of total area occupied by permanent access
For the purposes of calculating the proportion of permanent access structures within the area of the SP, use the definition of total area as described in the area summary of the stocking standards section of this guidebook.
Total area = 49.5 ha (all the area inside the marked boundary of the cutblock)
Total area = 49.5 ha
Proportion of permanent access
Proportion of area occupied by permanent access structures =
Note: An additional 0.2 hectare landing and a 0.02 hectare return trail are required, but is prescribed to be rehabilitated, therefore, is considered temporary access and is not included in the permanent access calculation.
Proportion of the net area to be reforested (NAR) occupied by temporary access
In this example, all new permanent access structures will be constructed in SU A. In SU B, there is no mappable non-productive area or NCBR. The temporary landing and return trail will be constructed in SU B which is 15 hectares in size.
NAR within SU B = total area of SU B – (permanent structures + mappable non-productive area + immature + (non-commercial brush > 4 ha))