## 3 Results and Discussion
### Offsetting Environmental Impacts: CO\({}_{2}\) Emissions  
It is well known that during the life of a plant species, it absorbs CO\({}_{2}\) in order to perform its vital functions such as creating biomass and releasing oxygen as a by-product during the photosynthetic process. As discussed throughout the research, the impact category of global warming is of great relevance and is considered to be the most recognized or understood impact category worldwide by society. In this research, only the reduction in environmental impacts associated with the global warming category will be assessed, leaving the mitigation of other assessed impact categories to future research. In the first part of this research, the environmental impacts of the production of NCAs were evaluated. The definition of these impacts firstly entails the generation of knowledge about the environmental cost of producing NCAs in Spain and a way to look for environmental solutions to the production process of these aggregates and how to optimize it in order to reduce the impacts. Therefore, the aim is to determine the possible mitigation of environmental impacts preliminarily in the category of Global Warming Potential through vine cultivation. To this end, the CO\({}_{2}\) absorbed by the vine itself in its  
Figure 4: Comparative results obtained from the sensitivity analysis. culty is quantified and how this CO\({}_{2}\) absorption, considered as a positive impact, helps to mitigate the CO\({}_{2}\) emissions generated by the production of NCA. Derived from the absorption of CO\({}_{2}\) by the plant, the concept of carbon sequestration in the soil is generated, that is the fixation and contribution of carbon content (C) to the soil, improving the physical-chemical conditions of the land for its agricultural exploitation. In this way, the vision and objective of the research is brought into the concept of sustainable construction. A schematic process of the idea to be developed in the current research is shown in Figure 5.  
First of all, it is necessary to know how much C and CO\({}_{2}\) is absorbed by the vine crop. This value will vary depending on the climatic zone, type of vine cultivated, etc. For this research, we have recourse to the study by [PERSON] et al., where they study the carbon density (C) fixed by vine cultivation per hectare (ha) for the various municipalities that make up the Autonomous Community of La Rioja (Spain) [18]. According to the authors and on average, the vine crop would store a total of 9.12 t of C per ha [18]. We also use the research of [PERSON] et al., where they evaluate the agricultural crops of the Autonomous Community of La Rioja (Spain) and the CO\({}_{2}\) balance as a function of agricultural activity. According to this study, the total balance of emissions associated with a given crop type depends on three subcategories. These are the direct emissions related to the consumption of fuel used for agricultural work. Indirect emissions that reflect those emissions produced by fertilizers and phytosanitary products used in the care of the crop. Total emissions, which is the sum of direct and indirect emissions, is the sum of the negative emissions that are produced when a crop is cultivated. Finally, the emissions captured/absorbed correspond to the CO\({}_{2}\) emissions that the plant absorbs from the atmosphere for the functioning of its life cycle [17]. The equivalent CO\({}_{2}\) emission values for each type of emission associated with vine cultivation can be found in Table 5[17]. Figure 5: CO\({}_{2}\) emissions balance diagram of natural aggregates production and vine cultivation.