Sara Ghavamifar, Hossein Torabi Golsefidi, Ali Bahrami Samani, Zhaohui Li, Ravi Naidu
{"title":"The correlation of soil properties, climate factors, and 137Cs activity in soils","authors":"Sara Ghavamifar, Hossein Torabi Golsefidi, Ali Bahrami Samani, Zhaohui Li, Ravi Naidu","doi":"10.1002/saj2.70122","DOIUrl":null,"url":null,"abstract":"<p>The entry of <sup>137</sup>Cs into the soil can lead to its presence in food and water. Understanding how <sup>137</sup>Cs behaves in soil is important for predicting its environmental fate. Thirteen agricultural and one pasture soil sample were collected from various locations. A comprehensive analysis of the soil's physicochemical properties and climate and geographical factors was conducted. <sup>137</sup>Cs activity and clay mineralogy were determined using γ-spectrometer and x-ray diffraction. Correlation analysis between measured factors with <sup>137</sup>Cs activity revealed that the presence of carbonate minerals played a significant role in the negative correlation between pH and <sup>137</sup>Cs activity (<i>r</i> = −0.43). While a weak negative correlation was observed between clay mineral content and <sup>137</sup>Cs activity (<i>r</i> = −0.12), the type of clay minerals presents proved to be more influential on <sup>137</sup>Cs adsorption. Smectite minerals exhibited a positive correlation with <sup>137</sup>Cs activity (<i>r</i> = 0.46), aligning with the correlation between <sup>137</sup>Cs activity and precipitation (<i>r</i> = 0.49). The strong positive correlation between longitude and <sup>137</sup>Cs activity (<i>r</i> = 0.66, <i>p</i> < 0.01) was not directly indicative of longitude's influence on nuclear fallout distribution. Instead, this correlation was attributed to the interplay of other factors, including precipitation, smectite, calcium carbonate, and chlorite minerals. The possible effect of soil erosion, land use, and human activity on <sup>137</sup>Cs activity was discussed in provinces with similar soil and climate characteristics. This research explored the potential influence of various factors on <sup>137</sup>Cs activity, highlighting the complexity of environmental factors in accurately estimating <sup>137</sup>Cs levels in soil.</p>","PeriodicalId":101043,"journal":{"name":"Proceedings - Soil Science Society of America","volume":"89 5","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings - Soil Science Society of America","FirstCategoryId":"1085","ListUrlMain":"https://acsess.onlinelibrary.wiley.com/doi/10.1002/saj2.70122","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The entry of 137Cs into the soil can lead to its presence in food and water. Understanding how 137Cs behaves in soil is important for predicting its environmental fate. Thirteen agricultural and one pasture soil sample were collected from various locations. A comprehensive analysis of the soil's physicochemical properties and climate and geographical factors was conducted. 137Cs activity and clay mineralogy were determined using γ-spectrometer and x-ray diffraction. Correlation analysis between measured factors with 137Cs activity revealed that the presence of carbonate minerals played a significant role in the negative correlation between pH and 137Cs activity (r = −0.43). While a weak negative correlation was observed between clay mineral content and 137Cs activity (r = −0.12), the type of clay minerals presents proved to be more influential on 137Cs adsorption. Smectite minerals exhibited a positive correlation with 137Cs activity (r = 0.46), aligning with the correlation between 137Cs activity and precipitation (r = 0.49). The strong positive correlation between longitude and 137Cs activity (r = 0.66, p < 0.01) was not directly indicative of longitude's influence on nuclear fallout distribution. Instead, this correlation was attributed to the interplay of other factors, including precipitation, smectite, calcium carbonate, and chlorite minerals. The possible effect of soil erosion, land use, and human activity on 137Cs activity was discussed in provinces with similar soil and climate characteristics. This research explored the potential influence of various factors on 137Cs activity, highlighting the complexity of environmental factors in accurately estimating 137Cs levels in soil.