Result Variables

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[[::Result Variables|English]]

(UNDER CONSTRUCTION)

Figure 1. Variable selection dialog

Introduction

Variables that can be projected by the Heureka system are listed here. Notes:

• Most variables has a before and after-component, which refers to state or value before treatment, and immediately after treatment.
• When you select variables, for example when running the Treatment Program Generator in PlanWise, or when defined the table view in StandWise, you can hover with the cursor over a variable, in the tree view control, to get a short tooltip description.

• Data per Species (standwise values, e.g. age in years and volume in m³sk/ha, per tree species and before and after any treatment)
• Dead wood (in kg for amounts of carbon, in m³ for different types of dead wood in different decay classes, per tree species)
• EvenAged (one of three different types, before and after any treatment, i.e. re-calculated in the simulations)
• Financial Value (volumes in m³/ha, for e.g. timber and pulp, amounts in ton/ha, for e.g. harvest residuals, and different costs and revenues in SEK/ha)
• Forest Data (standwise values, e.g. age in years and volume in m³sk/ha, before and after any treatment)
• Forest Domain (static values corresponding to the current forest domain, the current result control category, and the current treatment control category)
• Growth (e.g., current and mean annual increment, in m³sk/ha,yr, gross and net values per tree species)
• Mortality (in m³sk/ha, per tree species)
• Recreation (index value between 0-1, before and after any treatment)
• Statistics (e.g., standard errors, in %, corresponding to e.g. age and volume estimates, before and after any treatment)
• Treatments (e.g., type of treatment and e.g. corresponding harvested volumes, in m³sk/ha per tree species, and the number of years since start to current treatment)

Alternative summary

Included

Dummy indicator

IsSetAside

Indicates if the treatment unit is set aside for nature conservation, as part of a parent treatment unit.

Net present value

Net present value for the alternative.

Discount rate

Discount used when net present value was computed.

Forest data

The Forest Data result category contains result that describe common forest state variables.

Volume

Volume per ha

Stems

Stems per ha

Basal Area

Sum of cross-sectional basal area of trees at breast-height (m2/ha)

Dg

Diameter of mean basal area tree (cm)

Dgv

Basal area weighted mean diameter (cm)

Mean age

Basal area weighted mean age (yrs)

Hgv

Basal area weighted mean height (cm)

Species data

Same as forest data, but for each species group. The species group codes in Heureka are currently fixed, see defintion of codes here.

Note: It is a bit inconsistent that these data are not included in Forest data. Other result types, such as "Treatments", store both species-wise data and totals in the same node. Each results type actually represent a table in the result database.

Biomass

Biomass (ton dry matter/ha) for different parts of the trees, e.g. stem, branches and roots. Summarized per tree species.

Carbon and nitrogen

Carbon and nitrogen (ton/ha) for soil organic carbon and nitrogen.

Recreation index

Recreation index

Stand-level recreation index as a function of stand structure, see Recreation value.

Structural diversity

Even-aged class

Tree-size diversity class (Hugin definition).

Tree-size diversity class (Gini coefficient).