摘要：Documentation of Forest Damage Factors 2007
The Documentation of Forest Damage Factors 2007
(German abbr. DWF) provides data on important forest
pests, diseases, vertebrates and abiotic damages, collected
by means of a survey on forest district basis in all privately
and publicly owned forests of Austria for the year 2007.
Data ascertainment is based on the estimation of 68
damage factors. For 20 damage factors the damage was
documented in terms of volume of the damaged wood (in
m3), for 42 damage factors in terms of damaged forest
areas affected (in hectares). For the remaining six damage
factors only the occurrence was assessed.
For the year 2007, the method of ascertainment has not
been changed. Due to the reorganisation of forest districts
only slight adaptations had to be made. Therefore, the
number of assessment units has decreased by 1,
amounting now to 241 (Figure 1). The number of interpretation
units has not changed (76 forest districts).
From 2003 onwards, DWF has replaced that part of the
Austrian survey system “Forest Statistics” (German abbr.
FOSTA) which is dealing with forest damages to avoid
misunderstandings when comparing the results of the
different surveys and to prevent duplication of ascertainment
work.
The results for the total federal territory of Austria are
illustrated by maps of the forest districts allowing a good
overview on the forest health situation and acknowledging
the trend of the previous year.
