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The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B5. Beijing 2008
modelling, from the large landscape of GCC to a historical site
along it; moreover it can be visited from Internet by the same
address mentioned above.
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Figure 5. Visualization of a historical building in the 3D
simulation system
Figure 5 shows a historical building, Shanxi & Shaanxi
Proinvincial Guildhall at Liaocheng city, Shandong pronince,
build in 1743,Qing dynasty, which has been restricted in the 3D
simulation system. Visitors can fly through in that virtual senses
freely and enjoy the gorgeous and elaborate building through
Internet.
3.3 Related Thematic Researches
3.3.1 Spatial-Temporal evolution of GCC’s channels
Combined with historical documents and Chinese traditional
atlas on GCC, we endeavour to reveal the spatial-temporal
evolutions of GCC with SIT from the time of its building.
Figure 6. The variation detection of GCC’s channels at Qingkou,
Figure 6 shows the evolution of GCC at a crucial node,
Qingkou, Huaian city, Jiangsu province, where eight rivers
meet and cause obvious changes, including abandoned yellow
river and GCC. The lines on the left graphic are channels
extracted from air photo in 1954, the base map is TM imagery
of 1989 with the resolution of 30m, while the lines on the right
graphic are channels in 2000 gained from documents, and the
base map is merged SPOT5 imagery of 2006 with the resolution
of 2.5m.The result has been accepted by the Journal of
Tsinghua University (Science and Technology) and will be
published soon.
3.3.2 Land use and land cover changes of important canal
cities and some special canal sites
The study of LUCC on GCC regions would reflect close
connections between GCC and its surroundings; driving factors
of its evolutions from natural perspective as well as socio-
economical, and to what level GCC had influenced the
development of the canal cities. Figure 7 indicates the case
study we have conducted at Yangzhou city, Jiangsu province.
Based on imagery in 1954, 1998, and 2002, the study used
extraction after classified method to monitor land use changes
from 1954 to 2002; while classifying, the object-oriented
method was used to extract features in different temporal
imagery. The result has been accepted by proceeding
Geoinfomatics2008 at Guangzhou city, China, and will be
securable soon.
Yanphou Uaduw its 1954 Yanphou tarxtee in 1998 Yanphou tandm* in 2902
Figure 7. LUCC of Yangzhou, a southern city along GCC
3.3.3 Investigation of cultural resources along GCC
With the support of data collecting system based upon hand
held PDA, professionals of cultural heritage conservation from
Beijing city, Tianjin city, Hebei province, Shandong province,
Jiangsu province and Zhejiang province carried out field
investigations along the GCC. Related data is recorded
following the established standards, and then pre-processed data
is storied in spatial database and presented with geography
information system with designed symbols. Figure 8 shows
cultural resources of GCC at Beiwu Lanke districts near Jining
city, Shandong province.
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Figure 8. Cultural resources of GCC at Beiwu Lake district
near Jining city
4. CONCLUSIONS AND DISCUSSIONS
We have utilized common SIT in the GCC study of
investigation and conservation, including GIS, RS, GPS and the
visual method, VR. The results indicate that