## 3 Results  
### Creation of Spatial Databases  
To assess the level of environmental pollution, we have developed several spatial databases.  
One of the databases is the \"Database of Soil Pollution in the Republic of North Ossetia-Alania\". The spatial boundaries and the research area extended over aterritory of 810 km\({}^{2}\), with a level of soil pollution (according to the results of previous work) from medium to crisis, within the administrative boundaries of the Republic of North Ossetia-Alania.  
The main geological tasks of the work carried out were the following:  
* Assessment of the current state of soil pollution, including pesticides and radioactive substances, and prediction of its change under natural and man-made conditions on the territory of North Ossetia-Alania;
* Development of proposals and recommendations for the prevention of soil pollution;
* Preparation of environmental maps marking the geopathogenicic zones (zones of environmental risk) in North Ossetia-Alania.  
A total of 1104 sampling points were included in the specified spatial database.  
To monitor ecogeophysical factors of the environment in Vladikavkaz, we measured the indicators of noise pollution and the levels of gamma and electromagnetic radiation at 126 points of the city. The noise level was measured using an Ecogeofizika-110A, a noise and vibration meter, manufactured by the Russian company Oktava (Tula, Russia). Gamma radiation levels were measured using a DBGA-OCHA gamma radiation dosimeter. To study the electric and magnetic fields, measurements were carried out with an IEP-05 electric field meter and with IMP 05/1 and 05/2 magnetic field meters. The results of the work were also formalized in the form of a spatial database for subsequent analysis and the creation of maps.  
There are close correlations between the value of the received quantitiesof metals and their concentrations in the body of a person working in production. In particular, chemical production workers have accelerated development of pathologiesrelating tothe bioelectrical and contractile function of the heart, atherogenic changes in blood serum, neurocirculatory dystonia, myocardial dystrophy, atherosclerosis, and chronic heart failure [60]. When considering the situation of population that does not work in such industries but lives in the halo of their distribution, it should be noted that there is a direct relationship between chemical pollution of the environment and an increase in the frequency of allergies, bronchopulmonary pathology, thyroid hyperplasia, caries, and neuropsychiatric and physical developmental disorders. Theecological conditionality of congenital malformationsand malignant growths, which are markers of chronic exposure to xenobiotics, has also been noted.  
A special database was developed for processing and subsequent analysis of the obtained data. The parameters of the database included the location, gender, age of the patient, localization of the lesion inthe patient's body (brain, larynx, stomach, female genital organs, thyroid gland, intestines, skin, bones, blood, lungs, lymph nodes, face, mammary gland, male genital organs, liver, kidneys, prostate); a total of 17 items. (Full names of patients are not included in the primary datafor ethical reasons.)  
Patients were divided into several groups according to age up to 20 years, 20-29 years, 30-39 years, 40-49 years, 50-59 years, 60-69 years, and 70 years and older. The obtained data were superimposed on a digital map-scheme of the development of the city. In other words, in GIS technologies, the places of residence (streets, buildings, and their numbers) of patients were plotted on the map-scheme of the building stock, thus creating a distribution of the incidence of malignant growths over the area of the city.