Adequate radiological protection requires the quantification of radionuclide transfer to the human food chain, which is essential for the estimation of ingestion doses. Transfer parameters are key inputs for the development of radioecological models and decision support systems. There are many literature compilations of these parameters, however, most of values were calculated in temperate climates, and data for Mediterranean ecosystems are scarce. In this study, transfer factors to foodstuffs collected in Mediterranean ecosystems, in Spain, were compared to reported values for temperate climate. Foodstuff included cereals, meat (beef, lamb and pork), dairy products (milk, cheese yogurt, and kefir), and also typical products of Mediterranean diet, such as olives, olive oil, grapes and wine. Radioactive (¹³⁷Cs, ^226,228Ra and ⁴⁰ K) and stable elements (Cs, Sr, K, Na, Ca, Mg, P, Pb, U and Th) were measured to enable the calculation of transfer factors. As a consequence, data for transfer factors in Mediterranean systems were increased by about 120 and 200 values for plant and animal products, respectively. Due to the low level radiocaesium concentration in Spanish ecosystems, transfer factors for this radioisotope were largely ‘less than’ values. Therefore, stable Cs and Sr transfer factors were used as proxy for comparison with temperate values.

充分的放射防护要求对放射性核素转移到人类食物链中进行定量，这对于估计摄入剂量至关重要。传输参数是开发放射生态学模型和决策支持系统的关键输入。这些参数有很多文献汇编，但是，大多数值是在温带气候下计算的，地中海生态系统的数据很少。在这项研究中，将西班牙地中海生态系统中食品的转移因子与温带气候的报告值进行了比较。食品包括谷物，肉类（牛肉，羊肉和猪肉），乳制品（牛奶，奶酪酸奶和开菲尔），以及地中海饮食的典型产品，例如橄榄，橄榄油，葡萄和葡萄酒。放射性（¹³⁷测量了Cs，^226,228 Ra和^{4 0}  K）和稳定元素（Cs，Sr，K，Na，Ca，Mg，P，Pb，U和Th），以便计算转移因子。结果，地中海系统中植物和动物产品的转移因子数据分别增加了约120和200。由于西班牙生态系统中放射性铯的浓度较低，因此该放射性同位素的转移因子在很大程度上“小于”值。因此，使用稳定的Cs和Sr传递因子作为与温度值比较的代理。