This study was carried out in the forest area of the Gomel region of Belarus contaminated by ¹³⁷Cs following the Chernobyl accident of 1986. The aim of the study was to explore the effects of different types of wildfires on the biological availability of radionuclides and the distribution of algal communities in fire-affected soils. Soil samples were collected in 2017 and 2018 from sites burnt by surface and crown fires, and from two unburnt reference locations. The soil samples were analyzed for radioactivity, agrochemical characteristics and the abundance of photoautotrophs. The proportions of various ¹³⁷Cs fractions, according to our findings, differ between fire-affected and unburnt forest soils, and also between the different types of wildfire. The forest soil affected by surface fire is characterized by an increased amount of easily exchangeable and mobile fractions. In the forest burnt by the crown fire, where the above ground vegetation was almost completely destroyed, the mobile fractions of ¹³⁷Cs are easily washed out from the topsoil, allowing them to penetrate into deeper soil layers. Soil algae play an important ecological role in sustaining terrestrial ecosystems and are sensitive to various physicochemical properties of soil, such as pH level, nutrient content and moisture. Most of these physicochemical properties are known to stimulate the growth of algal cells, however no evidence has been found in this study regarding the relationship between ¹³⁷Cs activities in soil and the algal species richness.

这项研究是在1986年切尔诺贝利事故之后，在受¹³⁷ Cs污染的白俄罗斯戈梅利地区的森林地区进行的。该研究的目的是探讨不同类型的野火对放射性核素的生物有效性及其分布的影响。受火灾影响的土壤中的藻类群落。在2017年和2018年从地面和树冠大火燃烧的地点以及两个未燃烧的参考地点收集了土壤样品。分析土壤样品的放射性，农业化学特性和光合自养生物的丰度。各种比例¹³⁷根据我们的发现，Cs分数在受火灾影响和未燃烧的森林土壤之间以及在不同类型的野火之间也有所不同。受地表火影响的森林土壤的特点是增加了易于交换和流动的部分。在树冠大火烧毁的森林中，地上植被几乎被完全摧毁，其中的可移动部分为¹³⁷铯很容易从表层土壤中洗掉，使其渗入更深的土壤层。土壤藻类在维持陆地生态系统中起着重要的生态作用，并且对土壤的各种物理化学特性（例如pH值，养分含量和水分）敏感。这些理化特性中的大多数都可以刺激藻类细胞的生长，但是在这项研究中，没有发现有关土壤中¹³⁷ Cs活性与藻类丰富度之间关系的证据。