A comprehensive radio-ecological evaluation of soil samples of Solan and Shimla districts of Himachal Pradesh has been carried out for risk and dose assessment. Twenty-six randomly selected environmental soil samples were analysed for natural radionuclide concentrations (²²⁶Ra, ²³²Th and ⁴⁰K) using NaI(Tl) scintillator detector. The average concentration of ²²⁶Ra, ²³²Th and ⁴⁰K was observed as 37, 59 and 430 Bq kg⁻¹, respectively, which exceeded the worldwide average of 33, 45 and 412 Bq kg⁻¹ reported by UNSCEAR (Sources and effects of ionizing radiation. Report to the general assembly with scientific annexes, New York, 2008). Radium equivalent activity (Ra_eq), hazard indices (H_ex, H_in) and radioactivity level indices (I_ϒr, I_α, AUI) and Clark value were checked against their threshold limits, and their mean values were safely below the recommended criteria. This confirms the soil applicability for construction purposes. Indoor and outdoor dose rates (Ḋ), age-dependent annual effective doses (AED), organ-specific doses and lifetime attributable cancer risk (both cancer incidence and cancer mortality) were also computed. Strong positive correlation was established between radon/thoron exhalation rate and their parent radionuclides. Multivariate statistical technique was employed to explore spatial distribution of radionuclides and homogeneity between various radiological parameters.

对喜马偕尔邦 Solan 和 Shimla 地区的土壤样本进行了全面的放射生态评估，以进行风险和剂量评估。使用 NaI(Tl) 闪烁体检测器分析了 26 个随机选择的环境土壤样​​品的天然放射性核素浓度（²²⁶ Ra、²³² Th 和^{40 K）。226} Ra、²³² Th 和⁴⁰ K的平均浓度分别为37、59 和 430 Bq kg ^-1，超过了 33、45 和 412 Bq kg ^{-1的全球平均水平}UNSCEAR 报告（电离辐射的来源和影响。向大会提交科学附件的报告，纽约，2008 年）。镭当量活度 (Ra _eq )、危害指数 (H _ex , H _in ) 和放射性水平指数 (I _ϒr , I _α, AUI) 和 Clark 值已根据其阈值限值进行检查，并且它们的平均值安全地低于推荐标准。这证实了土壤对建筑目的的适用性。还计算了室内和室外剂量率 (Ḋ)、年龄相关的年有效剂量 (AED)、器官特异性剂量和终生癌症风险（癌症发病率和癌症死亡率）。氡/钍气呼出率与其母体放射性核素之间建立了强正相关关系。采用多元统计技术探索放射性核素的空间分布和各种放射学参数之间的均匀性。