Guillitte O, Melin J, Wallberg L
Unité de Radioécologie, Faculté des Sciences Agronomiques, Gembloux, Belgium.
Sci Total Environ. 1994 Dec 11;157(1-3):207-15. doi: 10.1016/0048-9697(94)04283-S.
In an attempt to understand the mechanisms governing the transfer and retention of radiocaesium in the understorey vegetation, 39 macromycetes species and 33 plant species, together with humus samples, were systematically collected from the undercover vegetation in a boreal coniferous forest. The results indicate that the main factors determining interspecific differences in contamination level are the rooting depth in plants, the depth of mycelium in fungi, and the ecophysiological behaviour of fungi, mycotrophism or plant parasitism. A comparison between the investigated species and the same species growing in similar ecosystems, albeit under different climatic conditions, resulted in an almost identical ranking in terms of radiocaesium contamination levels; the contamination ratios between species were also relatively constant. From an experiment involving humus samples, it was shown that up to 40% of the radiocaesium could be retained by the microflora, particularly by mycelia.
为了了解控制放射性铯在林下植被中转移和留存的机制，从北方针叶林的林下植被中系统采集了39种大型真菌、33种植物以及腐殖质样本。结果表明，决定物种间污染水平差异的主要因素是植物的生根深度、真菌中菌丝体的深度，以及真菌的生态生理行为、菌根营养或植物寄生现象。对所研究物种与生长在类似生态系统中（尽管气候条件不同）的同一物种进行比较，结果显示在放射性铯污染水平方面排名几乎相同；物种间的污染比率也相对恒定。通过一项涉及腐殖质样本的实验表明，微生物群落，特别是菌丝体，能够留存高达40%的放射性铯。
