hundred, which are scattered over the countryside. One of the main tasks
of a district management is forest cultivation in spring, while the marking
of timber posts, brush control, slash disposal and road building is carried
out in summer. Cutting proceeds all the year round, with heavy momentum
in the winter period. Timber is transported to truck roads or river landings
by horse or tractor. For the planning of all these operations, both in office
and in the field, frequent use is made of forest maps.
Conventional usage of forest maps in Swedish forest management
The usage may be summarized under four main points:
1. General view of forest blocks, with representation on the map of cut
areas, haul roads, streams and other floatways etc.
2. Orientation in forest — a rather important factor in Northern Sweden.
3. Planning of operations and silvicultural measures: forest cultivation,
cutting, driving, land reclamation etc. Planning is often done in office
and data about topography, as well as about forest stand characteristics,
are needed. Therefore a concise description of stand characteristics is
often prepared as a supplement to the map. Such a description includes
data about the site class, composition of species, stand age or cutting
class and volume of standing timber in cub. metres per hectare etc.
Some of the most important items of stand description are usually
marked on the map as a formula.
4. A record of measures carried out, silvicultural work and cutting opera-
tions is clearly made on the map.
Forest maps are generally made to the scale of 1: 10 000, in Northern
ókogsKar/ag
over
Hem:t Viken 1%
| Wo s, lk ^n
| Movikens lon
| Upprál/ad à 1954 av
RA
Skala 110000
100 100 200
Sdn 22. 2 00. 200
x
E E 2
Fig. 1. Forest map of conventional type. (From Norrl. Skogsvárdsfórbund)