MCDA supplies consistent ranking of the spatial vulnerability
areas based on a variety of criteria. Hence, the aim of the study is
to study and assess natural disaster vulnerability factors of HMS
sites in the study areas of Ayutthaya based on integrating MCDA
with GIS, accompanied by ranking of risk's factors for each HMS.
The second part is a field survey of the flood impacts and the
vulnerability values for the HMS. It shows that the previous floods
have damaged the HMS in the historic city of Ayutthaya. To
conserve those HMS, it is important to assess the damage in terms
of environmental, external and internal damage. The levels of
damage assigned, are categorized as high risk, medium risk and
low risk respectively (see Figure 6). Furthermore, the historic
monument values are ranked as high, medium or low values.
These two factors are employed as indicators for setting the
priorities of HMS conservation [19].