From time to time, Input - Output model systems have been applied in estimating economic - environment linkages. Further, the economic interregional input output model system can be applied in analysis impacts on residuals generated by interregional economic activities.

In this paper will processed with case study of HoChiMinh City and Rest of Vietnam based on inter-regional input - output approach.

The first part of this paper presents the conceptual and accounting framework of the IRIO model in inter-regional economic impact analysis. In this paper, special attention is paid of the Miyazawa system in the decomposition of the economic multiplier effects. For the purpose of this study, the IO model is being extended to be able to measure economic-environmental linkages.

The second part is a case study for HoChiMinh City based on the 2000 IRIO table. The objective of this study is to measure the inter-regional, inter-industrial interdependencies as well as the consequent environmental effects of pollution emissions due to economic activities. An analysis of the empirical results on the economic-environmental multipliers is shown in the last part of this case study.