Multi-resources data based environment assessment of the Grand Canal in Beijing with CEAI model

The Grand Canal was more than 3,500 km long, going through 2500 years in China history. It plays an important role in the field of navigation, military affairs, political affair and culture. Until now, the part of the canal from Jining city to Hangzhou city is still being used. But the current situation of the environment along the canal is disgusting and valuation standards are not uniform. For the case of Beijing, based on GIS and RS, RS image data of Peking was interpreted and raster database of land use/ vegetation coverage was made with SPOT5 remote sensing image data of September in the year 2006. With the heritage parameters as well as the ecological parameters along the canal, an environment assessment model was constructed to evaluate the environment along the canal under ArcGIS 9.3. Results showed that the general environment along the canal was usual, and the area under middle level takes 34% of the whole. Synthesis value of environment, which correlated with natural condition, economic development and human environment, decreased from the suburb to the urban area in spatial distribution. This environment assessment system is also useful for the ecological and human environment assessment of the area along the Grand Canal in other provinces for its planning, protection, management, application for the world heritage as well as its sustainable development.