for the units of volume, their display at the monitor or the
creation of a plot file, which can be given out onto a
printer (Fig. 9). During the generation of the profiles the
operator can select with an option menu which parameter
of the criteria should be presented (Figure 8).
The average time from the selection of the unit of volume
in the test areas up to the construction of the profiles on
the monitor totals 45 sec. At a computer of the newer
generation there can still be an essential time saving. A
test was carried out also with the data, which exist for the
entire urban area of Dortmund. The construction time for
the profiles was not essentially higher. A prognosis over
the term the display will take at the existence of all data
for the entire urban area of Dortmund can not yet be
given at this point indeed. With sufficient computer speed
this might be however still in a justifiable time.
4 EXAMPLE
The practical application serves as the fundamental
demonstration of the translation of the methodical
concept with the help of the computer aided prototype of
UQUADO.
With the help of the methodical modules described in
chapters 2 for each zone unit the environmental situation
both on the subject level (describing classification) as well
as on the value level (rating classification) can be
presented. To fashion the statements to the
environmental quality transparently and comprehensible
and to present the environmental situation of the
respective unit of volume in their entirety clearly, a so-
called profile of environmental quality has been
developed as display type.
The example (Figure 9) shows exemplary among others
the main structure of the profile of environmental quality,
i.e. the maximum shaping of the classes (10) and levels
(VIII) for the describing classification and/or the rating
classification. For the clear display of the environmental
quality of the units of volume an uniform output in the DIN
A4 format has been developed.
In the upper half a part of the respective area to be
examined is copied. The units of volume, for which the
profile should be calculated, are emphasised graphically.
References of the chosen scale as well as the date of
processing are displayed. The lower half shows the
structure of the describing classification (left) and the
rating classification (right).
In this example two areas of the same land use
(Kleingarten/garden plot) have been selected and the
differences are shown in the profiles and in additional text
attributes. At the soils contamination for example the
element (Cd) with the worst measurement values is
displayed. At the noise pollution the T indicates that the
day values were chosen from the options menu (Figure
8). A the criterion ‘Bes. gesch. Natur und
Landschaftsteile/special protected areas’ on the
description is it only marked that there is an area to
528
protect in unit one. On the right side this is stated more
precisely (LSG/Lanschaftsschutzgebiet/nature reserve).
5 CONCLUSION
A program for the estimation of the environmental
situation has been developed under a Geographic
Information System. The program UQUADO allows a user
without having detailed knowledge of a GIS software to
produce so called profiles of the environmental quality in
a very short time. These profiles can be used for planning
purposes and help making decisions.
The map of the environment serves to objectivize
preparations of decisions by clarifying
e under which point of view a certain unit of volume is
defined
e which information are the base
e how the described situation will be rated from the
point of view of the environment
e which rules are used for estimation.
For the future the main effort has to be to set up the data
for the whole town area. Only if this is to be done
UQUADO is a powerful tool for decisions, analysing and
information.
Nevertheless UQUADO is a passive tool to help making
decisions. To become an active instrument objectoriented
technologies and artificial intelligence has to be
implemented.
6 REFERENCES
Baumann/Birkner/Lüken/Stahl, 1995. Einsatz von Geo-
Informationssystemen für Umweltbewertungen. Wich-
mann, Karlsruhe
Bill/Fritsch, 1991. Grundlagen der Geo-Informations-
systeme. Wichmann, Karlsruhe
ESRI, 1992: Understandig GIS - The Arc/Info Method
Garbers, J, 1991: Entwicklung eines Instruments zur
Unterstützung der kommunalen Umweltplanung und
Umweltvertráglichkeitsprüfung mit Hilfe von Arc/Info.
Diplomarbeit am Institut für Photogrammetrie und
Ingenieurvermessungen, Universitát Hannover
1994:
Planungsgruppe Ökologie + Umwelt Nord,
Umweltqualitätskarte Dortmund, Endbericht
Schemel/Langer/Baumann, 1990. Handbuch zur Umwelt-
bewertung. Stadt Dortmund, Umweltamt
Schiewe J, Siebe E, 1994: Revision of cartographical
databases using digital orthoimages. International
Archives of Photogrammetry And Remote Sensing. Vol.
30, Part 3/2, pp 724-731
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B4. Vienna 1996
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