Product attributes of Track.23

When the treatment is actually applied, the rest of the parameters specified in the treatment file are apparent in the Editor. When a treatment is applied, products are also derived!

	TRACK  TREATMENT  LABEL                        FUTURE  CURVE
	...
	23      CC        product.Area.managed.SW      0       32
	23      CC        product.Seral.mature         0       154
	23      CC        product.Seral.old            0       155
	23      CC        product.Seral.regen          0       30
	23      CC        product.Seral.young          0       156
	23      CC        product.Treated.CC           0       32
	23      CC        product.Visual.disturb       0       30
	23      CC        product.Yield.managed.Conif  0       157
	23      CC        product.Yield.managed.Decid  0       158
	...
      

The products.csv file is similar to the features.csv file except for the addition of the TREATMENT field. Individual blocks reference products by track LABEL and treatment type.

If Track.23 was eligible for several different management treatments, the number of records in the treatment file would increase to represent all the product attributes that would result from all the different treatments.

Products, like features, are displayed as attributes in the Block Table. The value of the LABEL field represents attribute names that may be common to a number of tracks. The curves that represent the specific product attributes may be unique to each Track. Products differ slightly from features in that they only have values during the period when the treatment is applied, whereas features represent what is actually present on the ground and therefore will have values in all planning periods.

Product attribute values are computed in the same way as feature attribute values. Values are interpolated from the product curve associated with the Track and are multiplied by the managed area of the block in question (unmanaged areas are never treated).

Figure 180.  Product attribute curves that apply to the CC treatment on block 27 (taken from Track.23).

(a) product.Yield.managed.Decid

(b) product.Yield.managed.Conif


Let's look at some specific curves for our sample block 27. Curves 158 and 157 represent the yields of deciduous species and conifer species, respectively, that would result from a clearcut harvest treatment.

The marked inflection points of the curves are the values found in the curves.csv file.

Notice the shape of curve 157 (product.Yield.managed.Conif) compared to the shape of curve 152 (feature.Yield.managed.Conif). Feature and product curves can be the same shape with the same or different set of points, or they can have different shapes to represent the outcome of a management treatment (ie. residual trees left in white pine selection harvest). In this particular instance, they are the same shape.

To see what products are produced from the CC treatment in block 27, we can manually apply the management treatment in the Treatment Editor. Notice that the green lines representing managed features change as a result of the harvest treatment. The red lines represent the unmanaged portion of the block and are unaffected by the harvest treatment (see the section called “Treatments”).

After the CC treatment is applied to the managed area in block 27, the products derived from the treatment are listed in the line chart. Notice that the list of products matches the records in the products.csv file for Track.23 CC treatment.

Notice how the curves change after the treatment, as the managed Track is reset to an offset (age) of 0 as was specified in the treatment file. The track remains Track.23 for the managed area of block 27 after the CC treatment.

The values obtained from the yield curves are multiplied by the managed area of block 27 (9.63ha) to obtain product attribute values for the planning period in which the treatment occurred.