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Figure 3. Part of the preliminary FCM-map
3. SILUP - SUSTAINABLE LAND USE PLANNING
3. The SILUP project
The SILUP (Sustainable Development by Integrated Land Use
Planning) was started 1998. Three institutes from the University
of Stuttgart (Institute for Landscape Planning and Ecology,
Institute for Photogrammetry and Institute of Hydraulic Engi-
neering) are working together with the Chinese project partners
from the Nanjing Institutes of Geography and Limnology and
of Soil Sciences of the Chinese Academy of Sciences, from the
Department of Urban and Resources Sciences of the Institute of
Geography and Ocean Sciences of Nanjing University, from
Hohai University and from the Nanjing Hydraulic Bureau.
With all these scientists, from different countries and sciences,
working together it's different to reach concrete agreement on a
lot of details and definitions. Although it only were details and
slightly different interpretations, the project shows that it is not
as easy as it should be to bring scientist from different disci-
plines together.
To achieve a consistent database, filled with data from different
scientists, sciences and countries, the definitions have to be
very exact. Only exact definitions can guarantee a consistent
and homogenous database. This is very time intensive, but this
time is crucial for the success. Taking this time is also useful
for each of the involved scientists. They can profit from
thinking again about each definition, which leads sometimes to
new insights.
3.2 The tasks of the Remote Sensing and GIS project group
In the SILUP Project the main work for the Remote Sensing
and GIS teams consists of:
549
® Creation of a spatial database (SDB)
e Studies on methods of extracting thematic informa-
tion from Satellite Images (SPOT)
e Research on data fusion using SPOT, SPIN-2 and
CBERS-1 data.
e Construction of a Digital Elevation Model (DEM)
3.3 The spatial database
All spatially related information which was used for further
processing was organized in the SILUP spatial database. The
database was designed in a hierarchically way, as seen in
Figure 4. The layout of the data base was discussed and worked
out jointly with Chinese and German partners. The data was
organised layerwise. This organisation provided a fast and easy
access for all the project partners to all relevant spatially related
data.
Land Use Map
Uncultiv. HAgricultureH Forest H Builtup
or
Transport
Non
Non
irrigated ;
- Road Network Economic
Lu
Water Network
o
« —] Rivers H Polders
e
- Soil Ma
< p
I —— Irrigated Soils H Non irr. Soils
d ENT ERE
a
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d | Administration
< Admin. Study Admin. Ext. H Admin Al |
-
< SPOT Fused | SPIN2 GeorefH{ — SPOT
0. eoref.
o -| Settlement Centers PAN Georef.
: Planning
- - Hydrogeology
— Hydro. Study H * Hydro. All
XS Georef.
XI Georef.
3 Study Area
———4 Study Area H Extended
Figure 4. The design of the spatial database
In the spatial data base exclusively such data were included
which are consistent to each other, i.e. all layers have the same
coordinate reference and map projection. The consistency of
the spatial database is fundamental to all further work. Exact
definitions and a lot of discipline is required to create, update
and keep the database consistent. Different standards of data
coding are a big problem here. Uncertain details and definitions
can still occur in the data. This has to be solved when
integrating the data into the database.
Furthermore, care was taken that the single polygon layers nei-
ther do overlap nor do form gaps, in order to provide a unique
and dense coverage of the whole study area.