## 3 Results
### Environmental Sustainability Evaluation
In the ECO management, most of these attributes scored \"high\", \"medium-high\" or \"medium-low\", with one only basic attribute (N balance) with \"low\" value. Conversely, in NO ASC, the most frequent score was \"medium-low\", while GM showed intermediate values between the other two treatments. The \"soil and water preservation\" aggregate attribute showed small differences among water management options, while the first order attribute \"soil\" was \"high\", \"medium-low\" and \"low\" for ECO, GM, and NO ASC, respectively. These differences are generated by the basic attributes \"tillage diversification\" and \"tillage typology and depth\" (\"high\" in ECO and \"medium\" in GM and NO ASC), \"soil erosion control (\"high\" in ECO and \"medium-high\" and \"medium-low\" for GM and NO ASC, respectively) and \"organic matter balance\" (\"high\" in ECO and GM and \"low\" in NO ASC). The \"resources preservation\" aggregate attribute differed for the attributes related to the \"energy\" and \"fertilization\", which scored frequently \"high\" and \"medium\" in ECO treatment, \"medium\" in GM and \"medium-low\" and \"low\" in NO ASC. No differences were found in the first order \"phytosanitary management\" attribute and in the basic attributes. Finally, a large number of differences were recorded in the \"biodiversity conservation\" component. In particular, the ECO treatment scored \"high\" and \"medium-high\" in most of the basic attributes, GM showed frequently \"medium-high\" values, while NO ASC scored \"medium-low\" and \"low\" values. The results of the SI calculation for the basic attributes are reported in Figure 5.  
The \"microorganism preservation\" and the \"macrofauna preservation\" reached the highest (0.12 and 0.08, respectively) SI values, being the most influential variables of the first order \"biodiversity conservation\" attribute. Within the \"resources preservation\" aggregate attribute, the \"fertilization C/N\" basic attribute reached the highest SI value, while in the \"production capacity\" attribute, the \"insects and pest diseases\" and the \"weeds\" and \"production quantity\" showed higher values compared with the other basic attributes. Within the \"soil and water preservation\" component, the only basic attribute \"soil erosion control\" overtakes the 0.2 sensitivity index. Figure 5: Sensitivity index values obtained with IZIEval tool for each basic variable of _DEXi-met_ referred to the overall sustainability. The vertical line distinguishes the more sensitive variables (right side of the line) from the others. Table 4 reports the frequency distributions of the 5000 simulated outputs of the Monte Carlo (MC) analysis for the overall sustainability and for the main model components (nodal attributes). The \"overall environmental sustainability\" showed the qualitative value \"medium\" more frequently (MC = 0.543) than the other values. Among the nodal attributes, the \"production capacity\" recorded the value \"medium\" (MC = 0.496) that occurred more frequently than the other modalities. The \"medium-low\" and \"medium\" values were the most frequent for the \"soil and water preservation\" (MC = 0.571 and MC = 0.275, respectively), while the \"resources preservation\" principally scored the \"medium\" and \"medium-high\" values (MC = 0.475 and MC = 0.399, respectively). In the nodal attribute \"biodiversity conservation\", the \"medium-low\" and \"medium-high\" were the most frequent values.