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首页> 外文期刊>Moscow University Soil Science Bulletin >LONG-TERM DYNAMICS OF ~(137)Cs AND ~(90)Sr ACCUMULATION BY HIGHER FUNGI
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LONG-TERM DYNAMICS OF ~(137)Cs AND ~(90)Sr ACCUMULATION BY HIGHER FUNGI

机译：〜（137）Cs和〜（90）Sr在较高真菌中累积的长期动力学

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The realization of the decisive role of forest ecosystems in the accumulation and redistribution of radioactive elements is one of the main conclusions drawn from the 17-year-long study of radioecological consequences of the Chernobyl accident. The long-term prediction of radionuclide behavior in these systems requires the parameterization of fluxes of the main dose-forming elements with account for the tendencies in their long-term changes. It is generally accepted now that fungi are absolute concentrators of ~(137)Cs in forest ecosystems and one of the main dose-forming components in the trophic chain, especially for critical population groups (inhabitants of contaminated forest regions, forestry workers, etc.) [1]. Therefore, the development of new models is evidently required for describing the role of this biogeocenosis component in the biogeochemical migration of ~(137)Cs and in trophic chains, with account for the long-term changes in its accumulation. Many authors have studied the long-termdynamics of the technogenic accumulation of radionuclides in higher fungi in terms of global and Chernobyl fallouts. The importance of these studies is that fungi largely determine the internal radiation dose for humans and serve as indicators of biological availability of ~(137)Cs, one of the main biologically important technogenic radionuclides. However, many problems are still to be solved. The most contradictory concepts are related to the long-term dynamics of ~(137)Cs accumulation by higher fungi, which was especially manifested in the initial period after the Chernobyl accident.
机译：实现森林生态系统在放射性元素积累和再分配中的决定性作用，是对切尔诺贝利事故长达17年的放射性生态后果研究得出的主要结论之一。这些系统中放射性核素行为的长期预测要求考虑到其长期变化的趋势，对主要剂量形成元素的通量进行参数化。现在人们普遍认为真菌是森林生态系统中〜（137）Cs的绝对浓缩物，并且是营养链中主要的剂量形成成分之一，特别是对于关键人群（受污染的森林地区的居民，林业工作者等）而言。 ）[1]。因此，显然需要开发新的模型来描述这种生物大肠菌病成分在〜（137）Cs的生物地球化学迁移和营养链中的作用，并考虑到其积累的长期变化。许多作者从全球和切尔诺贝利的影响方面研究了高等真菌中放射性核素技术积累的长期动力学。这些研究的重要性在于，真菌在很大程度上决定着人类的内部辐射剂量，并作为〜（137）Cs（一种重要的生物学上重要的技术放射性核素）的生物利用度的指标。但是，许多问题仍然有待解决。最矛盾的概念与高等真菌〜（137）Cs积累的长期动态有关，这一点尤其体现在切尔诺贝利事故发生后的初期。

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