Soderberg1986BAI5: Basal Area Increment of 5 years for Individual trees in...
In Silviculturalist/forester: Forest Science and Forestry
Soderberg1986BAI5 R Documentation
Basal Area Increment of 5 years for Individual trees in Sweden from Söderberg 1986.
Description
Applicable counties:
Northern Sweden
Norrbottens lappmark
Norrbottens kustland
Västerbottens lappmark
Västerbottens kustland
Västernorrland - Ångermanlands landskap
Västernorrland - Medelpads landskap
Jämtland - Jämtlands landskap
Jämtland - Härjedalens landskap
Kopparberg - Sälen-Idre.
Central Sweden
Kopparberg - övriga
Gävleborg - Hälsinglands landskap
Gävleborg - övriga
Värmland
Southern Sweden
Stockholm
Uppsala
Västmanland
Södermanland
Örebro
Östergötland
Skaraborg
Älvsborg - Västergötlands landskap
Älvsborg - Dalslands landskap
Jönköping
Kronoberg
Kalmar
Halland
Kristianstad
Malmöhus
Blekinge
Gotland
Regarding the regional division of the models:
Freely translated from Söderberg 1986 p. 29:
'The regional division is motivated in the following.
For Pine the country has been divided into 3 regions (see figure 4.1),
which are based on the different forms of Scots Pine which have been
distinguished by Sylvén 1917. The distribution of the different forms of
Scots Pine is assumed to depend on the expansion-history of the Pine,
according to which the Pine immigrated both from the north and the south
with a transitional zone in central Sweden, where both forms are present.
For other species, the change in genotype is more continuous over the
country (Kiellander 1974). For Norway Spruce, it is assumed that it has had
time for 30-50 generations in northern Sweden, contrasted against only 10-20
in southern Sweden (Kiellander 1966). Therefore the same regional division
is used for Norway Spruce as for Scots Pine. For the other species, the
regional division is limited to two regions, wherein the northern and central
regions have been merged.
NB in Söderberg (1986), no correction for logarithmic bias was introduced
, as, (freely translated) p. 114: "At the presentation of the functions we
lightly touched on the effects of the measurement errors in the variables
which had been included in the regression. It was then concluded
that several factors contrived to that the spread about the functions is
overestimated. Therefore no correction for logarithmic bias was carried out,
primarily because the effect of the errors in the indipendent variables on
the spread about the function are difficult to establish. If one were to
assume that the spread about the function was overestimated by 10 percent,
the predicted growth from the functions would be increased by roughly 2
percent. For 20 percents overestimation, an increase of predicted growth by
4.5 percent."
Usage
Soderberg_1986_BAI5_Sweden_Oak(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
maritime
)
Soderberg_1986_BAI5_Sweden_Beech(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
SI_species,
SI100,
age,
thinned,
last_thinned,
latitude,
altitude,
divided_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_Broadleaves(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
latitude,
divided_plot = 0
)
Soderberg_1986_BAI5_northern_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
aspect,
soil_moisture,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
aspect,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_under_65_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
vegetation,
aspect,
altitude,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_over_45_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
vegetation,
aspect,
latitude,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_Broadleaves(
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
latitude,
altitude,
divided_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_central_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Arguments
DBH.cm
Diameter at breast height
DBH_largest_tree_on_plot.cm
Diameter at breast height of the largest tree on the plot.
BA_tree.m2
Basal area of the tree, m^2.
BA.m2_ha
Basal area of all tree species the plot, m^2 / ha.
age
Age at breast height of the tree.
thinned
TRUE if the stand has been thinned, otherwise FALSE.
last_thinned
Number of growing seasons since last thinning.
aspect
If more than 2:20 / 5 percent, one of the following. Otherwise 0.
1 North
2 North-East
3 East
4 South-East
5 South
6 South-West
7 West
8 North-West
maritime
TRUE, if the plot is situated in a maritime climatic region.
cf. Ångstrom 1958. e.g. Angstrom_1958_local_climate_Sweden() .
Otherwise FALSE.
BA_Pine.m2_ha
Basal area Pine on the plot, m^2 / ha.
BA_Birch.m2_ha
Basal area Birch on the plot, m^2 / ha.
SI_species
Species for which SIH100 was estimated.
One of : 'Picea abies' or 'Pinus sylvestris'.
SI100
Site Index H100, m.
latitude
Latitude, degrees.
altitude
Altitude, meters above sea level.
divided_plot
1 for plots described in different parts,
which appears when the original plot consists of different land classes,
density classes or cutting classes or belongs to different owners. 0 for
full plots (default).
BA_Spruce.m2_ha
Basal area Spruce on the plot, m^2 / ha.
soil_moisture
1-5. e.g. Sweden_soil_types()
county
Character string. One of:
Northern Sweden
Norrbottens lappmark
Norrbottens kustland
Västerbottens lappmark
Västerbottens kustland
Västernorrland - Ångermanlands landskap
Västernorrland - Medelpads landskap
Jämtland - Jämtlands landskap
Jämtland - Härjedalens landskap
Kopparberg - Sälen-Idre.
Central Sweden
Kopparberg - övriga
Gävleborg - Hälsinglands landskap
Gävleborg - övriga
Värmland
Southern Sweden
Stockholm
Uppsala
Västmanland
Södermanland
Örebro
Östergötland
Skaraborg
Älvsborg - Västergötlands landskap
Älvsborg - Dalslands landskap
Jönköping
Kronoberg
Kalmar
Halland
Kristianstad
Malmöhus
Blekinge
Gotland
peatland
1 if plot is Peatland, 0 for others (default).
fertilised_plot
1 for fertilised plots, 0 for others (default).
plot_inventoried_76_77
1 for plots measured in the years 1976-77,
0 for others (default).
vegetation
1-18. See Sweden_vegetation_types() for
description.
Details
Beech Southern Sweden
Multiple correlation coefficient R 0.87
Spread about the function sf 0.586
sf/Spread about the mean 0.53
Number of observations 178
Sum of weights 161.5
Norway Spruce Southern Sweden under 65
Multiple correlation coefficient R 0.85
Spread about the function sf 0.526
sf/Spread about the mean 0.52
Number of observations 3564
Sum of weights 2997.7
Norway Spruce Southern Sweden over 45
Multiple correlation coefficient R 0.84
Spread about the function sf 0.559
sf/Spread about the mean 0.55
Number of observations 2651
Sum of weights 2446.5
Birch Southern Sweden under 65
Multiple correlation coefficient R 0.78
Spread about the function sf 0.658
sf/Spread about the mean 0.63
Number of observations 1034
Sum of weights 892.9
Birch Southern Sweden over 45
Multiple correlation coefficient R 0.74
Spread about the function sf 0.697
sf/Spread about the mean 0.68
Number of observations 704
Sum of weights 648.6
Broadleaves Southern Sweden
Multiple correlation coefficient R 0.79
Spread about the function sf 0.630
sf/Spread about the mean 0.62
Number of observations 643
Sum of weights 541.1
Oak Southern Sweden
Multiple correlation coefficient R 0.90
Spread about the function sf 0.417
sf/Spread about the mean 0.45
Number of observations 222
Sum of weights 187.9
Scots Pine Southern Sweden under 65
Multiple correlation coefficient R 0.80
Spread about the function sf 0.506
sf/Spread about the mean 0.60
Number of observations 1662
Sum of weights 1417.6
Scots Pine Southern Sweden over 45
Multiple correlation coefficient R 0.72
Spread about the function sf 0.514
sf/Spread about the mean 0.70
Number of observations 2373
Sum of weights 2221.5
Scots Pine Central Sweden under 65
Multiple correlation coefficient R 0.84
Spread about the function sf 0.476
sf/Spread about the mean 0.55
Number of observations 815
Sum of weights 692.9
Norway Spruce Northern Sweden under 65
Multiple correlation coefficient R 0.87
Spread about the function sf 0.470
sf/Spread about the mean 0.49
Number of observations 1790
Sum of weights 1610.4
Norway Spruce Northern Sweden over 45
Multiple correlation coefficient R 0.84
Spread about the function sf 0.526
sf/Spread about the mean 0.55
Number of observations 3261
Sum of weights 3035.4
Norway Spruce Central Sweden under 65
Multiple correlation coefficient R 0.88
Spread about the function sf 0.505
sf/Spread about the mean 0.47
Number of observations 1565
Sum of weights 1370.1
Norway Spruce Central Sweden over 45
Multiple correlation coefficient R 0.86
Spread about the function sf 0.546
sf/Spread about the mean 0.52
Number of observations 1733
Sum of weights 1606.5
Broadleaves Northern or Central Sweden
Multiple correlation coefficient R 0.83
Spread about the function sf 0.595
sf/Spread about the mean 0.57
Number of observations 246
Sum of weights 216.0
Birch Northern or Central Sweden under 65
Multiple correlation coefficient R 0.76
Spread about the function sf 0.637
sf/Spread about the mean 0.65
Number of observations 755
Sum of weights 706.8
TO DO: Same as under 65?
Birch Northern or Central Sweden over 45
Multiple correlation coefficient R 0.76
Spread about the function sf 0.637
sf/Spread about the mean 0.65
Number of observations 755
Sum of weights 706.8
Scots Pine Northern Sweden under 65
Multiple correlation coefficient R 0.88
Spread about the function sf 0.419
sf/Spread about the mean 0.48
Number of observations 1249
Sum of weights 1084.2
Scots Pine Northern Sweden over 45
Multiple correlation coefficient R 0.80
Spread about the function sf 0.502
sf/Spread about the mean 0.60
Number of observations 2495
Sum of weights 2351.3
#' Scots Pine Central Sweden over 45
Multiple correlation coefficient R 0.81
Spread about the function sf 0.476
sf/Spread about the mean 0.58
Number of observations 1440
Sum of weights 1350.9
Value
Basal area increment during 5 years, m2.
Source
Söderberg, U. (1986) Funktioner för skogliga produktionsprognoser -
Tillväxt och formhöjd för enskilda träd av inhemska trädslag i Sverige. /
Functions for forecasting of timber yields - Increment and form height for
individual trees of native species in Sweden. Report 14. Section of Forest
Mensuration and Management. Swedish University of Agricultural Sciences.
Umeå. ISBN 91-576-2634-0. ISSN 0349-2133. pp.251.
Silviculturalist/forester documentation built on April 20, 2024, 2:13 p.m.
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| Soderberg1986BAI5 | R Documentation |
Basal Area Increment of 5 years for Individual trees in Sweden from Söderberg 1986.
Description
Applicable counties:
| Northern Sweden | |
| Norrbottens lappmark | |
| Norrbottens kustland | |
| Västerbottens lappmark | |
| Västerbottens kustland | |
| Västernorrland - Ångermanlands landskap | |
| Västernorrland - Medelpads landskap | |
| Jämtland - Jämtlands landskap | |
| Jämtland - Härjedalens landskap | |
| Kopparberg - Sälen-Idre. | |
| Central Sweden | |
| Kopparberg - övriga | |
| Gävleborg - Hälsinglands landskap | |
| Gävleborg - övriga | |
| Värmland | |
| Southern Sweden | |
| Stockholm | |
| Uppsala | |
| Västmanland | |
| Södermanland | |
| Örebro | |
| Östergötland | |
| Skaraborg | |
| Älvsborg - Västergötlands landskap | |
| Älvsborg - Dalslands landskap | |
| Jönköping | |
| Kronoberg | |
| Kalmar | |
| Halland | |
| Kristianstad | |
| Malmöhus | |
| Blekinge | |
| Gotland | |
Regarding the regional division of the models:
Freely translated from Söderberg 1986 p. 29: 'The regional division is motivated in the following. For Pine the country has been divided into 3 regions (see figure 4.1), which are based on the different forms of Scots Pine which have been distinguished by Sylvén 1917. The distribution of the different forms of Scots Pine is assumed to depend on the expansion-history of the Pine, according to which the Pine immigrated both from the north and the south with a transitional zone in central Sweden, where both forms are present. For other species, the change in genotype is more continuous over the country (Kiellander 1974). For Norway Spruce, it is assumed that it has had time for 30-50 generations in northern Sweden, contrasted against only 10-20 in southern Sweden (Kiellander 1966). Therefore the same regional division is used for Norway Spruce as for Scots Pine. For the other species, the regional division is limited to two regions, wherein the northern and central regions have been merged.
NB in Söderberg (1986), no correction for logarithmic bias was introduced , as, (freely translated) p. 114: "At the presentation of the functions we lightly touched on the effects of the measurement errors in the variables which had been included in the regression. It was then concluded that several factors contrived to that the spread about the functions is overestimated. Therefore no correction for logarithmic bias was carried out, primarily because the effect of the errors in the indipendent variables on the spread about the function are difficult to establish. If one were to assume that the spread about the function was overestimated by 10 percent, the predicted growth from the functions would be increased by roughly 2 percent. For 20 percents overestimation, an increase of predicted growth by 4.5 percent."
Usage
Soderberg_1986_BAI5_Sweden_Oak(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
maritime
)
Soderberg_1986_BAI5_Sweden_Beech(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
SI_species,
SI100,
age,
thinned,
last_thinned,
latitude,
altitude,
divided_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_under_65_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_over_45_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
county,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_southern_Sweden_Broadleaves(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
latitude,
divided_plot = 0
)
Soderberg_1986_BAI5_northern_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
aspect,
soil_moisture,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
aspect,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
aspect,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_under_65_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
vegetation,
aspect,
altitude,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_over_45_Birch(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
vegetation,
aspect,
latitude,
soil_moisture,
county,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_northern_central_Sweden_Broadleaves(
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
aspect,
latitude,
altitude,
divided_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_under_65_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA_Birch.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_under_65_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Soderberg_1986_BAI5_central_Sweden_over_45_Spruce(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Pine.m2_ha,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
soil_moisture,
latitude,
altitude,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0
)
Soderberg_1986_BAI5_central_Sweden_over_45_Pine(
DBH.cm,
DBH_largest_tree_on_plot.cm,
BA_tree.m2,
BA_Spruce.m2_ha,
BA.m2_ha,
age,
thinned,
last_thinned,
SI100,
SI_species,
latitude,
altitude,
soil_moisture,
peatland = 0,
divided_plot = 0,
fertilised_plot = 0,
plot_inventoried_76_77 = 0
)
Arguments
DBH.cm |
Diameter at breast height | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DBH_largest_tree_on_plot.cm |
Diameter at breast height of the largest tree on the plot. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BA_tree.m2 |
Basal area of the tree, m^2. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BA.m2_ha |
Basal area of all tree species the plot, m^2 / ha. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
age |
Age at breast height of the tree. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
thinned |
TRUE if the stand has been thinned, otherwise FALSE. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
last_thinned |
Number of growing seasons since last thinning. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
aspect |
If more than 2:20 / 5 percent, one of the following. Otherwise 0.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
maritime |
TRUE, if the plot is situated in a maritime climatic region.
cf. Ångstrom 1958. e.g. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BA_Pine.m2_ha |
Basal area Pine on the plot, m^2 / ha. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BA_Birch.m2_ha |
Basal area Birch on the plot, m^2 / ha. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SI_species |
Species for which SIH100 was estimated. One of : 'Picea abies' or 'Pinus sylvestris'. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SI100 |
Site Index H100, m. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
latitude |
Latitude, degrees. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
altitude |
Altitude, meters above sea level. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
divided_plot |
1 for plots described in different parts, which appears when the original plot consists of different land classes, density classes or cutting classes or belongs to different owners. 0 for full plots (default). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BA_Spruce.m2_ha |
Basal area Spruce on the plot, m^2 / ha. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
soil_moisture |
1-5. e.g. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
county |
Character string. One of:
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
peatland |
1 if plot is Peatland, 0 for others (default). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
fertilised_plot |
1 for fertilised plots, 0 for others (default). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
plot_inventoried_76_77 |
1 for plots measured in the years 1976-77, 0 for others (default). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
vegetation |
1-18. See |
Details
Beech Southern Sweden
| Multiple correlation coefficient R | 0.87 |
| Spread about the function sf | 0.586 |
| sf/Spread about the mean | 0.53 |
| Number of observations | 178 |
| Sum of weights | 161.5 |
Norway Spruce Southern Sweden under 65
| Multiple correlation coefficient R | 0.85 |
| Spread about the function sf | 0.526 |
| sf/Spread about the mean | 0.52 |
| Number of observations | 3564 |
| Sum of weights | 2997.7 |
Norway Spruce Southern Sweden over 45
| Multiple correlation coefficient R | 0.84 |
| Spread about the function sf | 0.559 |
| sf/Spread about the mean | 0.55 |
| Number of observations | 2651 |
| Sum of weights | 2446.5 |
Birch Southern Sweden under 65
| Multiple correlation coefficient R | 0.78 |
| Spread about the function sf | 0.658 |
| sf/Spread about the mean | 0.63 |
| Number of observations | 1034 |
| Sum of weights | 892.9 |
Birch Southern Sweden over 45
| Multiple correlation coefficient R | 0.74 |
| Spread about the function sf | 0.697 |
| sf/Spread about the mean | 0.68 |
| Number of observations | 704 |
| Sum of weights | 648.6 |
Broadleaves Southern Sweden
| Multiple correlation coefficient R | 0.79 |
| Spread about the function sf | 0.630 |
| sf/Spread about the mean | 0.62 |
| Number of observations | 643 |
| Sum of weights | 541.1 |
Oak Southern Sweden
| Multiple correlation coefficient R | 0.90 |
| Spread about the function sf | 0.417 |
| sf/Spread about the mean | 0.45 |
| Number of observations | 222 |
| Sum of weights | 187.9 |
Scots Pine Southern Sweden under 65
| Multiple correlation coefficient R | 0.80 |
| Spread about the function sf | 0.506 |
| sf/Spread about the mean | 0.60 |
| Number of observations | 1662 |
| Sum of weights | 1417.6 |
Scots Pine Southern Sweden over 45
| Multiple correlation coefficient R | 0.72 |
| Spread about the function sf | 0.514 |
| sf/Spread about the mean | 0.70 |
| Number of observations | 2373 |
| Sum of weights | 2221.5 |
Scots Pine Central Sweden under 65
| Multiple correlation coefficient R | 0.84 |
| Spread about the function sf | 0.476 |
| sf/Spread about the mean | 0.55 |
| Number of observations | 815 |
| Sum of weights | 692.9 |
Norway Spruce Northern Sweden under 65
| Multiple correlation coefficient R | 0.87 |
| Spread about the function sf | 0.470 |
| sf/Spread about the mean | 0.49 |
| Number of observations | 1790 |
| Sum of weights | 1610.4 |
Norway Spruce Northern Sweden over 45
| Multiple correlation coefficient R | 0.84 |
| Spread about the function sf | 0.526 |
| sf/Spread about the mean | 0.55 |
| Number of observations | 3261 |
| Sum of weights | 3035.4 |
Norway Spruce Central Sweden under 65
| Multiple correlation coefficient R | 0.88 |
| Spread about the function sf | 0.505 |
| sf/Spread about the mean | 0.47 |
| Number of observations | 1565 |
| Sum of weights | 1370.1 |
Norway Spruce Central Sweden over 45
| Multiple correlation coefficient R | 0.86 |
| Spread about the function sf | 0.546 |
| sf/Spread about the mean | 0.52 |
| Number of observations | 1733 |
| Sum of weights | 1606.5 |
Broadleaves Northern or Central Sweden
| Multiple correlation coefficient R | 0.83 |
| Spread about the function sf | 0.595 |
| sf/Spread about the mean | 0.57 |
| Number of observations | 246 |
| Sum of weights | 216.0 |
Birch Northern or Central Sweden under 65
| Multiple correlation coefficient R | 0.76 |
| Spread about the function sf | 0.637 |
| sf/Spread about the mean | 0.65 |
| Number of observations | 755 |
| Sum of weights | 706.8 |
TO DO: Same as under 65? Birch Northern or Central Sweden over 45
| Multiple correlation coefficient R | 0.76 |
| Spread about the function sf | 0.637 |
| sf/Spread about the mean | 0.65 |
| Number of observations | 755 |
| Sum of weights | 706.8 |
Scots Pine Northern Sweden under 65
| Multiple correlation coefficient R | 0.88 |
| Spread about the function sf | 0.419 |
| sf/Spread about the mean | 0.48 |
| Number of observations | 1249 |
| Sum of weights | 1084.2 |
Scots Pine Northern Sweden over 45
| Multiple correlation coefficient R | 0.80 |
| Spread about the function sf | 0.502 |
| sf/Spread about the mean | 0.60 |
| Number of observations | 2495 |
| Sum of weights | 2351.3 |
#' Scots Pine Central Sweden over 45
| Multiple correlation coefficient R | 0.81 |
| Spread about the function sf | 0.476 |
| sf/Spread about the mean | 0.58 |
| Number of observations | 1440 |
| Sum of weights | 1350.9 |
Value
Basal area increment during 5 years, m2.
Source
Söderberg, U. (1986) Funktioner för skogliga produktionsprognoser - Tillväxt och formhöjd för enskilda träd av inhemska trädslag i Sverige. / Functions for forecasting of timber yields - Increment and form height for individual trees of native species in Sweden. Report 14. Section of Forest Mensuration and Management. Swedish University of Agricultural Sciences. Umeå. ISBN 91-576-2634-0. ISSN 0349-2133. pp.251.
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