Relationship between stand density and value of timber assortments: a case study for Scots pine stands in north-western Poland

New Zealand Journal of Forestry Science

Table 1 Stand characteristics of sample plots (0.5 ha) selected for the study

Sample plot	Age, years	Density, tree ha⁻¹	Relative spacing	Arithmetic mean dbh (± SD), cm	Quadratic mean dbh, cm	Mean height (± SD), m	Top height, m	Basal area, m² ha⁻¹	Merchantable volume, m³ ha⁻¹
1	82	476	0.19	28.2 ± 4.5	28.6	22.9 ± 1.7	24.5	30.5	319
2	87	518	0.17	27.5 ± 4.9	27.9	23.6 ± 2.0	25.6	31.8	344
3	82	534	0.18	25.9 ± 4.3	26.2	22.4 ± 1.5	24.1	28.4	293
4	82	564	0.16	28.0 ± 4.5	28.3	24.5 ± 1.4	26.2	35.5	394
5	82	594	0.18	25.7 ± 4.7	26.1	20.8 ± 1.4	22.6	31.5	301
6	82	596	0.18	27.1 ± 5.2	27.6	21.6 ± 1.4	23.4	35.7	352
7	82	618	0.18	24.6 ± 4.0	24.9	20.4 ± 1.5	22.0	30.2	283
8	82	632	0.17	24.0 ± 4.7	24.5	21.1 ± 1.4	22.9	29.6	288
9	82	632	0.17	25.6 ± 4.7	26.0	22.0 ± 1.4	23.9	33.6	341
10	82	634	0.17	24.6 ± 4.6	25.1	21.4 ± 1.6	23.1	31.0	305
11	82	640	0.16	26.0 ± 4.7	26.4	23.4 ± 1.7	25.4	35.1	378
12	82	644	0.16	26.4 ± 4.4	26.7	23.0 ± 1.4	24.7	35.9	377
13	82	648	0.16	25.9 ± 5.2	26.5	22.3 ± 1.7	24.5	35.4	366
14	82	674	0.18	23.6 ± 4.3	24.0	19.6 ± 1.5	21.5	30.1	275
15	82	682	0.15	24.7 ± 4.9	25.2	22.8 ± 1.7	24.9	34.0	357
16	82	708	0.18	21.8 ± 4.2	22.2	19.5 ± 2.2	21.6	27.3	246
17	82	720	0.14	22.3 ± 4.3	22.7	24.7 ± 3.8	27.4	29.1	339
18	82	756	0.16	21.7 ± 4.4	22.2	20.5 ± 2.0	22.6	28.9	276
19	82	758	0.16	23.9 ± 5.3	24.4	20.1 ± 2.0	22.3	35.7	334
20	82	836	0.16	21.8 ± 4.0	22.1	19.3 ± 1.7	21.4	31.5	286