Development of Input-output Model for Evaluation of Intersect Oral Water Relationships in Yazd Province Economy

The aim of this study is evaluation of the effect of increasing the production of Yazd economy sectors on water consumption in same and other sectors. For this purpose, extended input-output model is used and intersect oral water relationships in Yazd Province are calculated divided into internal and external sources. Results show that direct water requirement to supply an additional unit of final demand in all sector is about 81m3. However, to supply this additional final demand, more than 92 m3 of water is consumed indirectly. Results of water transaction coefficients show that if all 20 economic sectors consume an additional cubic meter of water, in addition to 20 m3 of direct consumption, more than 94.4 m3 of water is consumed indirectly in the whole Yazd economy, of which about 91.7 m3 is external. These results highlight the importance of considering the indirect consumption and separation of internal and external source of virtual water in water plantings.