Abstract— The paper presents analysis of the accumulation of toxic and vital chemical elements in discrete links of the food chain under conditions of a biogeochemical province in relation to the accumulation of phytochelatins and metallothioneins in the leaves of white birch ( Betula pubescens) . Gradients of metal concentrations are determined in the soils with increasing distance from the Unal tailing dump and the effects of these gradients on the concentrations of the elements in birch leaves. Correlations are determined between the concentrations of toxic elements in the pulp and leaves separately for the native sample and water washout. A strong correlation was found between the total dissolved concentration of all metals and the total metallothionein and glutathione concentrations. It is hypothesized that the biochemical system of glutathione is more closely related to the accumulation of metals by plants than the system of metallothioneins. Estimates are made whether it is possible to apply the method of bioindication of the ecological state of a territory by determining the fluctuating asymmetry of birch leaves. This bioindication parameter was evaluated separately for each of the cardinal points. It is demonstrated that a high total concentrations of the metals in soils and birch leaves is correlated with an increase in the fluctuating asymmetry of the leaves and the concentration level of sulfur-bearing biological active compounds. The bioindication technique is however still far from perfect and is difficult to apply and, hence, requires further studies.

中文翻译：

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使用生物地球化学指示技术对北奥塞梯-阿拉尼亚 Unal 洼地进行生态监测

摘要：本文分析了在生物地球化学省条件下，与白桦 (Betula pubescens) 叶片中植物螯合素和金属硫蛋白积累有关的食物链离散环节中有毒和重要化学元素的积累。随着距 Unal 尾矿场的距离的增加以及这些梯度对桦树叶中元素浓度的影响，确定了土壤中金属浓度的梯度。分别针对天然样品和水冲洗确定纸浆和叶子中有毒元素浓度之间的相关性。发现所有金属的总溶解浓度与总金属硫蛋白和谷胱甘肽浓度之间存在很强的相关性。据推测，与金属硫蛋白系统相比，谷胱甘肽的生化系统与植物对金属的积累更密切相关。评估是否可以通过确定桦树叶的波动不对称性来应用领土生态状态的生物指示方法。针对每个基点分别评估该生物指示参数。结果表明，土壤和桦树叶中金属的高总浓度与叶片波动的不对称性和含硫生物活性化合物的浓度水平有关。然而，生物指示技术还远未完善，难以应用，因此需要进一步研究。