Type of indicator
Quantitative
Relative dimension and aggregated criteria
Environmental sustainability: Environmental quality: Soil quality
Description
This indicator calculates the difference between of heavy metal inputs and outputs. It takes into account the atmospheric feedback of heavy metal components from fertilizers, seeds, and phytosanitary products. It represents the remaining heavy metals (HM) in the soil and is thus an indirect indicator of soil toxicity. In high concentrations, heavy metals are toxic for the biodiversity in aquatic and terrestrial biospheres and affect crop fertility.
Indicator calculation
𝐻𝑀 𝑖𝑛𝑝𝑢𝑡𝑖 = Heavy metal input i in kg
𝐻𝑀 𝑜𝑢𝑡𝑝𝑢𝑡𝑖= Heavy metal output i in kg
𝐹𝑖 = Allocation factor in kg of 1.4 dichlorobenzene (1.4-DB)eq / kg
𝐹𝑃𝐶𝑀 = Total FPCM produced in kg
Unit
kg 1.4 dichlorobenzene (1.4-DB)eq / kg FPCM
Indicator interpretation
Higher values indicate larger negative impacts on the environment.
Scaλe definition
Rating scale: The ranking of the soil contamination potential of heavy metals is based on the CML characterization factor Guinée et al. (2002).
| Scale for the DEXI model | Dexi interpretation | |
| < 0.086955 (∑ (TV i*CF i)) | Low | + |
| [0.086955; 0.15504] | Medium | |
| > 0.15504 (∑(LG i*CF i)) | High | – |
References
Koch, P., Salou, T., 2016. AGRIBALYSE®: Rapport Méthodologique – Version 1.3. Ed ADEME, Angers, France, p. 343p.