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CONTENTS 
DISTRIBUTION ANALYSIS AND AUTOMATIC GENERALIZATION OF URBAN BUILDING CLUSTER 1 
T. H. Al, W. P. JIANG, Delft University of Technology (the Netherlands) 
GENERALIZATION FOR 3D GIS 8 
F. W. BAI, X. Y. CHEN, Asian Institute of Technology (Thailand) 
USING IKONOS HIGH RESOLUTION REMOTE SENSING DATA FOR LAND USE CLASSIFICATION 
IN CHINA 12 
G. BARETH, University of Hohenheim (Germany) 
LARGE SCALE GIS FOR A SUBURBAN TOWNSHIP OF BEIJING TO MODEL STRATEGIES FOR 
SUSTAINABLE AGRICULTURE ON FIELD LEVEL 16 
G. BARETH, S. JIN, T. YAN, R. DOLUSCHITZ, University of Hohenheim (Germany) 
THREE LEVEL HIERARCHICAL QUALITATIVE DESCRIPTIONS FOR DIRECTIONS OF SPATIAL 
OBJECTS 20 
H. CAO, J. CHEN, D. S. Du, Shaanxi Normal University (P. R. China) 
THE APPLICATION OF CENTROGRAPHIC ANALYSIS TO THE STUDY OF THE INTRA-URBAN 
MIGRATORY PHENOMENON IN THE GREATER MONCTON AREA IN CANADA, 1981-1996 25 
H. H. CAO, University de Moncton (Canada) 
PRE-FIELD CLASSIFICATION INTEGRATION VERY FINE SPATIAL RESOLUTION SATELLITE 
IMAGERY WITH TOPOGRAPHIC DATA 32 
M. CAPRIOLI, E. TARANTINO, Polytechnic University of Bari (Italy) 
INTEGRATION OF GIS WITH PESTICIDES LOSSES RUNOFF MODEL 37 
B. CHEN, G. HUANG, J. LI, Y. R. LI, Y. F. LI, University of Regina (Canada) 
RESEARCH ON 3D CITY VISUALIZATION BASED ON INTERNET 45 
J. CHEN, Q. G. LI, J. Y. GONG, B.S. YANG, Wuhan University (P. R. China) 
DYNAMIC AND MULTI-DIMENSIONAL GIS: AN OVERVIEW 52 
J. CHEN, Z. L. LI, J. JIANG, National Geomatics Center of China (P. R. China) 
A GIS-SUPPORTED ENVIRONMENTAL RISK ASSESSMENT FOR PETROLEUM WASTE 
CONTAMINATED SITE 59 
S. CHEN, G. HUANG, J. LI, University of Regina (Canada) 
MEASURING UNCERTAINTY IN SPATIAL FEATURES IN A THREE-DIMENSIONAL GEOGRAPHICAL 
INFORMATION SYSTEM 67 
C. K. CHEUNG, W. Z. SHI, the Hong Kong Polytechnic University (Hong Kong) 
SPATIAL DEVELOPMENT RESEARCH OF LARGE CITY BASED ON GIS SPATIAL ANALYSIS 72 
A. R. DANG, Q. Z. MAO, X. D. WANG, Tsinghua University (P. R. China) 
DIGITAL CLOSE RANGE PHOTOGRAMMETRY: A POTENTIAL TOOL FOR LAND FEATURE 
PRESENTATION 76 
G. DENG, Kunming University of Science and Technology (P. R. China)