乌克兰Kryvyi Rih区铁矿矿区森林植物群落对土壤剖面中微量金属含量的影响

IF 0.7 4区农林科学 Q3 FORESTRY

Baltic Forestry Pub Date : 2022-07-14 DOI:10.46490/bf631

V. Savosko

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引用次数: 0

摘要

植物-土壤相互作用在维持土壤重金属污染的负面效应中起着重要作用。了解植物群落土壤有机质的空间变异是土壤修复和预测有机质污染的基础。在这项研究中，根据乌克兰中部Kryvyi Rih铁矿石开采和冶金区进行的土壤调查估计了HMs含量。还评估了土壤剖面中微量金属的分布及其对森林、草原和农田植物群落的影响。在野外工作中，采集了整个土壤剖面的样品(每10厘米一层，一直到母岩)。共取样21个土坑，收集土样273份。测定了流动铁、锰、锌的含量。结果表明:Kryvyi Rih地区本底样地土壤剖面中HMs具有一定的分布规律;在铁矿开采和加工厂附近的土壤中发现了HMs的积累。单项和综合污染指标的应用表明，铁、锰、锌含量与采矿活动有关。植物群落对土壤中HMs含量有较大影响。植物群落按污染单项指数和综合指数的大小依次为:农业群落> >森林群落>草原群落。森林植物群落由于凋落叶中有机酸的存在，促进了重金属的动员，并可能促进铁、锰和锌离子向深层土壤的输入。污染区植物群落间的差异为了解土壤中HMs含量的主要影响因素的作用和相对重要性提供了有用的线索。关键词:植物群落，土壤，植物-土壤相互作用，痕量金属，污染指标，铁矿开采

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The impact of forest plant communities on the content of trace metals in soil profiles of the iron ore mining area, Kryvyi Rih District, Ukraine

The plant-soil interaction plays an important role in maintaining negative effects of soil pollution by heavy metals (HMs). Understanding HMs spatial variability in soils under plant communities is fundamental for soil restoration and predicting contamination by TMs. In this study, HMs content was estimated based on a soil survey conducted in Kryvyi Rih Iron Ore Mining and Metallurgical District, central Ukraine. The distribution of trace metals within a soil profile and their impacts on forest, steppe and agricultural land plant communities were also assessed. During field work, samples were collected from the whole soil profile (in 10 cm layers down to the parent rock). In total, 21 soil pits were sampled and 273 soil samples were collected. The contents of mobile Fe, Mn and Zn were assessed. The results showed that there was a specific pattern of HMs distribution in soil profile at the local background site of Kryvyi Rih District. The accumulation of HMs in soils in the vicinity of an iron ore mining and processing plant was found. Application of individual and integral indices of pollution demonstrated that Fe, Mn and Zn content was related to mining activity. The plant communities had a great impact on the HMs content in soils. According to the values of individual and integrated indices of pollution the plant communities form the following order: agricultural communities > > forest communities > steppe communities. The forest plant communities, due to the presence of organic acids in forest leaf litter, promote the mobilization of heavy metals and may contribute to input of Fe, Mn and Zn ions to deeper soil layers. The differences observed between the plant communities located in the contaminated areas provide useful insight clues into the role and relative importance of major factors determining HMs contents in soil. Keywords: plant communities, soil, plant-soil interactions, trace metals, indices of contamination, iron ore mining

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来源期刊

Baltic Forestry 农林科学-林学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal welcomes the original articles as well as short reports, review papers on forestry and forest science throughout the Baltic Sea region and elsewhere in the area of boreal and temperate forests. The Baltic Sea region is rather unique through its intrinsic environment and distinguished geographical and social conditions. A temperate climate, transitional and continental, has influenced formation of the mixed coniferous and deciduous stands of high productivity and biological diversity. The forest science has been affected by the ideas from both the East and West. In 1995, Forest Research Institutes and Universities from Estonia, Latvia and Lithuania joined their efforts to publish BALTIC FORESTRY.