Geographical Distribution Gastrointestinal Cancer and its Relation with Soil Nitrate Rural Settlement (Case study: Ardabil County)

Subject Areas : Natural geography and human settlements

Rasoul samadzadeh ¹ , Seyed Saied Azizzadeh ² , Ahmad Ghasemi ³

1 - Associate Professor, Dep. of Geography, Ardabil Branch, Islamic Azad University, Ardabil, Iran
2 - MSc in Geography, Ardabil Branch, Islamic Azad University, Ardabil, Iran
3 - Assistant Professor, Dep. of Infectious Diseases, Ardabil Branch, Islamic Azad University, Ardabil, Iran

Received: 2017-11-25 Accepted : 2019-10-10 Published : 2020-03-20

Keywords: Epidemiology, Ardabil county, soil nitrate, gastrointestinal cancers,

Abstract :

This research was carried out to study the relation between of soil nitrate accumulation in different areas of Ardabil Plain with gastrointestinal cancers. To conduct research, 34 villages in the suburbs of Ardabil were randomly selected (from each village, 3 samples) and transferred to the soil lab for nitrate measurement. The location of the samples was determined using a GPS device and the corresponding map with GIS technic. At the same time, a questionnaire was distributed among the farmers of the villages studied and completed. The data from laboratory and questionnaires were analyzed by SPSS19 software and the correlation of studied traits was studied. The relationship between consumption and nitrate accumulation from the soil was also studied by T-test. The average nitrate content of Ardabil plain farms was more than the recommended standard and was 414 mg / kg. The results showed that the amount of soil nitrate and nitrate intake per hectare affected the incidence of gastrointestinal cancer (pv <0.05). Based on the results, it was found that gastrointestinal cancer was scattered in the north and northwest areas of the plain and its geographic distribution was consistent with the type of soil containing nitrate.

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