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Impact of oil contamination on ecological functions of peat soils from West Siberia of Russia
Journal of Environmental Quality ( IF 2.2 ) Pub Date : 2020-11-26 , DOI: 10.1002/jeq2.20171
Ekaterina I. Kovaleva 1 , Sergey Ya. Trofimov 1 , Cheng Zhongqi 2
Affiliation  

For more than a century, the need for energy has exerted high demand on oil-production and led to significant negative impacts on soil and water resources. The aim of our work was to assess such impacts on the ecological functions of oil contaminated soils in West Siberia of Russia. The total petroleum hydrocarbons (PHC) content in contaminated soils varied between 3.7 and 390 g kg-1 . While peat had the ability to absorb some PHC, excess oil migrated in soil both downward and laterally. Catalase activity, soil respiration activity (BR - Basil Respiration, Cmic - microbial biomass carbon, qCO2 - specific respiration activity), Enchytraeus albidus survival and reproduction rates showed significant negative correlations with PHC concentrations and thus they can be used as guides for establishing acceptable PHC limits in peat soils. Based on the Logit model, the concentration of PHC in peat soil that corresponds to ∼20% reduction on functions (worm's reproduction, catalase activity and basal respiration) is about 40-50 g kg-1 . The concentrations of PHC that will result in 80% functional reductions (i.e., near complete loss on functional activities) are: worm's production - 177 g kg-1 ; catalase activity - 123 g kg-1 ; and basal respiration - 311 g kg-1 . This study provides quantitative understanding of the ecological impact of PHC contamination on peat soils, and thus helps to establish science-based guidelines for the protection of ecological functions and services of peatland soils. This article is protected by copyright. All rights reserved.

中文翻译:

石油污染对俄罗斯西西伯利亚泥炭土生态功能的影响

一个多世纪以来,对能源的需求对石油生产产生了很高的需求,并对土壤和水资源产生了重大的负面影响。我们工作的目的是评估此类对俄罗斯西西伯利亚石油污染土壤生态功能的影响。受污染土壤中的总石油烃 (PHC) 含量在 3.7 至 390 g kg-1 之间变化。虽然泥炭具有吸收一些 PHC 的能力,但多余的油会在土壤中向下和横向迁移。过氧化氢酶活性、土壤呼吸活性(BR - 罗勒呼吸、Cmic - 微生物生物量碳、qCO2 - 比呼吸活性)、白色内囊藻存活率和繁殖率与 PHC 浓度呈显着负相关,因此它们可以用作建立可接受的 PHC 的指南泥炭土中的限制。根据 Logit 模型,对应于功能(蠕虫繁殖、过氧化氢酶活性和基础呼吸)约 20% 减少的泥炭土壤中 PHC 的浓度约为 40-50 g kg-1 。将导致 80% 功能降低(即功能活动几乎完全丧失)的 PHC 浓度是: 蠕虫的产量 - 177 g kg-1 ;过氧化氢酶活性 - 123 g kg-1 ; 和基础呼吸 - 311 g kg-1 。本研究提供了对 PHC 污染对泥炭土壤生态影响的定量理解,从而有助于为保护泥炭地土壤的生态功能和服务建立科学的指导方针。本文受版权保护。版权所有。过氧化氢酶活性和基础呼吸)约为 40-50 g kg-1。将导致 80% 功能降低(即功能活动几乎完全丧失)的 PHC 浓度是: 蠕虫的产量 - 177 g kg-1 ;过氧化氢酶活性 - 123 g kg-1 ; 和基础呼吸 - 311 g kg-1 。本研究提供了对 PHC 污染对泥炭土壤生态影响的定量理解,从而有助于为保护泥炭地土壤的生态功能和服务建立科学的指导方针。本文受版权保护。版权所有。过氧化氢酶活性和基础呼吸)约为 40-50 g kg-1。将导致 80% 功能降低(即功能活动几乎完全丧失)的 PHC 浓度是: 蠕虫的产量 - 177 g kg-1 ;过氧化氢酶活性 - 123 g kg-1 ; 和基础呼吸 - 311 g kg-1 。本研究提供了对 PHC 污染对泥炭土壤生态影响的定量理解,从而有助于为保护泥炭地土壤的生态功能和服务建立科学的指导方针。本文受版权保护。版权所有。和基础呼吸 - 311 g kg-1 。本研究提供了对 PHC 污染对泥炭土壤生态影响的定量理解,从而有助于为保护泥炭地土壤的生态功能和服务建立科学的指导方针。本文受版权保护。版权所有。和基础呼吸 - 311 g kg-1 。本研究提供了对 PHC 污染对泥炭土壤生态影响的定量理解,从而有助于为保护泥炭地土壤的生态功能和服务建立科学的指导方针。本文受版权保护。版权所有。
更新日期:2020-11-26
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