Review distribution of management activities

Activating the harvested patch and route cost objectives allowed us control over the distribution of the management activities within the planning area. The size distribution targets charts show how well the targets were met, or we can take a look at the spatial distribution of harvest treatments across the landscape by adjusting the symbology of the block layer to display the resulting harvest patches. Using this quick assessment technique we can get a feel for whether or not our objectives were met or if some of the objectives need to be adjusted and the model run for longer to reach a satisfactory pattern on the landscape.

For more detailed information on adjusting the symbology in the Map Viewer see Adjusting Map Symbology.

  1. With the model paused, return the the 'Legend' tab and double click on the 'Seral Stages' layer to open the Layer Properties dialog.

  2. In the first tab labelled 'Layer' adjust the title from 'Seral Stages' to 'Harvest Patch Size'.

  3. Choose the 'Symbology' tab to adjust the layer symbology.

  4. From the Legend Type drop down list choose the 'Numeric Range' theme.

  5. Select patch.harvest.size from the Column drop down list (near the bottom of the list).

  6. Change the 'Number of classes' parameter to 3 to match the number of harvest patch size classes we have.

  7. Adjust the range of the three symbols as follows (the label will automatically update if you press Enter).

    • 0.001-10

    • 10-50

    • 50-50000

    The last entry max range was made unrealistically large to represent the 50+ category (you can edit the label to read 50+ instead of including the upper range number).

  8. From the 'Colour Set' drop down list choose a bright palette that will stand out on the grey imagery background (elevation or primary work well).

  9. If you are happy with your colour choice click 'OK' in the Layer Properties window to close the window, apply your changes and return to the Map Viewer.

  10. Scroll the time slider bar on the right side of the Map Viewer window ahead to Period 1 since there is no harvest activity in Period 0.

  1. To better see the routes connected to our harvest patches let's adjust the route symbology for MILL1 Volume Flow to increase the line width and use a brighter line colour. Start by double clicking the 'Volume Flow to Mill2' in the Legend.

  2. In the 'Symbology' tab click the line symbol to open the customize symbol window. Increase the line weight to 2 and choose a bright colour from the palette.

  3. Click 'OK' in the window and 'OK' in the Layer Properties window to apply your changes and return to the Map Viewer.

Using the 'Zoom In' tool select an area to view the harvest distribution and the routes associated with that harvest for Period 1. By looking at the pattern on the landscape and the target charts you will be able to assess whether your spatial goals for the management scenario were achieved.

Figure 32. Resulting harvest pattern with routes for Crowsnest Pass

The resulting harvest distribution pattern and parallel routes indicate that the model needs more time to achieve the current objectives or that some of the objectives should be adjusted in order to increase the priority of the key goals of your management area.

In some cases you may find isolated harvest blocks that would be unrealistically small for operations or parallel road segments that would also be unrealistic and expensive. If this is the case, we may need to decrease the amount of money available to the model to build and maintain roads in the first few periods. By decreasing the objectives for those expenditure targets and rerunning the model the scheduler may find alternative harvest blocks and routes that will satisfy the new set of objectives.

When you are satisfied with the results you can save the results of the scenario to keep a record of all the objectives set, the resulting harvest schedule and routes as well as all the predefined reports to summarize the results. (Use the same procedure as in Quick Tour Part I: Getting Started).