Eco-efficiency assessment in Command area of F1 in Sefidroud Irrigation and Drainage Network

The concept of eco-efficiency is used as a tool to analyze farm sustainability to relate economic value of an activity to its impact on the environment. SEAT and EVAT software are two modelling tools which combine both economic and environmental viewpoints into a single modelling framework and allow the user to evaluate the water consumption system. In this research, the eco-efficiency index with regard to the environmental impacts of diesel fuel was evaluated in the one of commands area in Sefidroud Irrigation and Drainage. The agricultural lands in this area including paddy rice, tea-garden and fish-culture. The environmental performance of the system was evaluated for climate change due to greenhouse gas emissions from diesel consumption as well the economic performance was measured by using the total value added to the system's final products due to water use and the adopted management practices. Then, the value of area vulnerability was assessed according to eco-efficiency index of climate change. The results showed that the eco-efficiency index in baseline for paddy rice, tea-garden and fish-culture were calculated 3.46, 0.76 and 0.02 Milion Rials/kg 〖CO〗_2 eq, respectively. the results showed that eco-efficiency indicator of scenarios 3 (the percent of irrigation efficiency and return flow are 63% and 5% in paddy rice, respectively) and 4 (replacing 50% of diesel engines with electric motors in fish farming) were increased 17 and 86% in the entire of F1, respectively, in comparison with base scenarios.