This functionality is only available in PlanWise.

 

Many forest management plans contain proposals of what operations to carry out for example the nearest ten years. The proposals are usually made by a planner who has made on on-site assessment whether a certain treatment can or should be done, for example, if the stand should be thinned soon from a maintenance perspective. A proposal tells what type of operation is involved, possibly how it should be performed, and when, for example "immediately ", " within 5 years", or "within 5 to 10 years". It is possible to enforce such proposals in a PlanWise analysis by importing them into the Heureka database and tell the program that they should be accepted. For various reasons, the forest owner or decision maker may have specific motives for applying certain treatments, subjects that the program cannot take into account. The function can also be used to study the differences between subjective assessments and optimized management programs in terms of finance, choice of operations and wood production.

 

Some characteristics of treatment proposals:

 

Entering and importing treatment proposals

To import treatment proposals for many stands, you can fill in the treatments in the Excel document supplied, see section Import treatment proposals.

 

You can view and edit the imported treatment proposals via menu Data Management > Treatment Proposal > Edit Treatment Proposals. Also, if you only need to specify a few treatment proposals, you can do it here.

 

 

 

Figure 2. Dialog for viewing and editing imported treatment proposals.

 

 

Activating the treatment proposals

There are two settings that control whether user-defined treatment proposal will be used or not in a simulation.

 

 

 

Figure 3. Settings for how treatment proposals are handled are found in control table Treatment Program Generator in PlanWise.

 

Under "Handling of Treatment Proposals" you can also set how stands without a proposal should be handled, and if the minimum allowed final felling age is allowed to be violated.

 

Treatment Proposals Missing specifies how stands without treatment proposal should be handled. NoActivity (default) means that no treatments are allowed for the next 10 years. LetTpgDecide means that treatment programs should be generated by the treatment program generator as usual.

 

Override Min Final Felling Age: If the treatment proposal is final felling it is probably already verified by the planner that the stand is eligible for final felling. The age calculation in Heureka can result in slightly different ages than those in the input data, so ti would be possible that a final felling would be prevented if Heureka considered a stand too young. When Override Min Final Felling age is set to true, the mean age as calculated by Heureka is ignored and the final felling will be allowed no matter whether the stand is too young or not according to Heureka. The difference in the calculated mean age and the input age depends on whether Calibrate Stand Age in control table Production Model is set to true or not, if set to true the mean ages are almost always the same except for extreme cases.

 

 

Figure 4. Ensure that Allow treatment proposals is checked if your treatment proposals should be applied.

 

 

Handling of special cases and incomplete treatment proposal