Table 2.
Emergy indices employed in this study
| Index | Formulation | Reference |
|---|---|---|
| Empower Density (EPD) | U/area | Odum (1996) |
| Specific emergy | Y/mass | Odum (1996) |
| Emergy Self-Sufficiency Ratio(ESR) | (R+N0)/U | Odum (1996) |
| Environmental Loading Ratio (ELR) | (F+ N0)/R | Brown and Ulgiati (1996) |
| Emergy Yield Ratio (EYR) | Y/F | Odum (1996) |
| Emergy Sustainability Index (ESI) | EYR/ELR | Brown and Ulgiati (1996) |
| Emergy Exchange Ratio (EER) | MY/Y | Odum (1996) |
| Emergy Index of Sustainable Development (EISD) Soil | EYR*EER/ELR | Lu et al., 2002 |
| Intensity Ratio (SIR) | N0/Y | This study |