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首页> 外文会议>NATO Advanced Research Workshop on Assessment and Management of Environmental Risks: Methods and Applications in Eastern European and Developing Countries Oct 1-4, 2000, Lisbon, Portugal >LIMITATIONS AND PERSPECTIVES OF RADIOECOLOGICAL ASSESSMENT FOR SOIL-PLANT SYSTEMS IN GREECE
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LIMITATIONS AND PERSPECTIVES OF RADIOECOLOGICAL ASSESSMENT FOR SOIL-PLANT SYSTEMS IN GREECE

机译：希腊土壤植物系统的放射生态学评估的局限性和前景

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Approaches to radiological risk assessment in Greece are insufficient. There is a need to point out some regional differences between Mediterranean region and the Northern European countries. The more important limitations concerning Greece are presented as follows: Limited data are available for the behaviour of radionuclides in the different agricultural ecosystems of the country. Important differences in the soil ecosystems exist between the Southern and Northern countries of Europe. Furthermore, a detailed soil mapping for the whole country does not exist except for some regions, covering approximately 30% of the land. Significant differences in plant cultivation are revealed. Concerning, for example, the tree plantations, 73% of the country is covered by evergreen trees (olive trees, citrus) and 25% by deciduous trees (grapes, pomes, stone-fruits, nuts). This distribution of cultivated tree species might be similar in Mediterranean countries but is different in Northern countries, where most - if not all - of the fruit-trees are deciduous. Climatic differences are obvious (i.e. long dry seasons are dominant in Greece). A Data Bank does not exist for the Transfer Factors (TFs) concerning the Mediterranean plant species. Finally, some differences in diet and food consumption are pointed out between Mediterranean and other countries. The main Greek perspectives are shortly presented by the following activities: Soil evaluation will be made on the basis of the main soil properties influencing the radionuclide availability from soil to plant. Classification of soil ecosystems, on the basis of TFs of radionuclides from soil to reference plants, will be performed for the whole country. A well organized Data Bank of radionuclide TFs from soil to the most important Mediterranean crops will be created and kept updated. Finally, an assessment of radionuclide kinetics in the whole system "atmosphere-soil-plant production" will be performed with the use of Experimental/Laboratory and Computational/Simulation methods.
机译：希腊放射风险评估的方法还不够。有必要指出地中海地区与北欧国家之间的一些地区差异。与希腊有关的更重要限制如下：在该国不同农业生态系统中，放射性核素行为的数据有限。欧洲南部和北部国家之间的土壤生态系统存在重要差异。此外，除某些地区外，还没有覆盖全国的详细土壤图，覆盖了大约30％的土地。揭示了植物栽培的显着差异。例如，在人工林方面，该国73％的树木被常绿乔木（橄榄树，柑橘）覆盖，而25％的落叶乔木被覆盖（葡萄，诗，核果，坚果）。在地中海国家，栽培树种的分布可能相似，但在北部国家则不同，在北部国家，大多数（如果不是全部）果树是落叶的。气候差异明显（例如，希腊的旱季很长）。没有关于地中海植物物种的转移因子（TFs）的数据库。最后，指出了地中海与其他国家在饮食和食物消费上的一些差异。以下活动简要介绍了希腊的主要观点：土壤评估将基于影响土壤到植物的放射性核素可利用性的主要土壤性质进行。将在全国范围内根据从土壤到参考植物的放射性核素的TFs对土壤生态系统进行分类。将从土壤到最重要的地中海作物的放射性核素TFs的数据库组织良好，并将对其进行更新。最后，将使用实验/实验室和计算/模拟方法对整个系统“大气-土壤-植物生产”中的放射性核素动力学进行评估。

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