Environmental Pollution最新文献_第4页

An ozone monitoring system employing passive sampling and a smartphone-based sensing and detection device 采用被动采样和基于智能手机的传感和检测装置的臭氧监测系统。

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-08 DOI: 10.1016/j.envpol.2026.127658

Kanokwan Kiwfo , Kate Grudpan , Andreas Held , Wolfgang Frenzel

An ozone monitoring system composed of two parts, monitoring device (passive sampling tube and ready-to-use indigotrisulfonate (ITS) immobilized pad) for sampling and sensing with smartphone detection is presented. The detection was based on bleaching of ITS by ozone and color evaluation via image processing. Correlation of the change of blue color (Red intensity) with amount of the immobilized ITS leads to ozone concentration by applying Fick's first law of diffusion. The conditions for monitoring were optimized by considering amount of ITS, sampling time, and ambient ozone concentration. The proposed system offers flexibility in ozone monitoring. Under an investigation condition, in real ambient air, ozone detection in the mixing ratio range 10–40 ppbv (20–78 μg m⁻³) is possible, and results have been validated by the continuous ozone monitoring method. The proposed system was applied to ozone monitoring in ambient air within a district of Berlin (Germany) at 16 sites (about 0.5 km²). The data were then used for calculation of the spatial distribution of the entire area. Monitoring can be carried out by transporting the monitoring devices from various sampling sites to the central lab; over 100 samples per day can be analyzed by a single operator. Alternatively, parallel operation could be performed in many different sampling sites by different operators, leading to semi-real time monitoring. The proposed system is cost-effective (less than 1 USD/device for materials) and very simple to use. The proposed system supports several UN Sustainable Development Goals (SDGs) and has potential for citizen science applications.

臭氧监测系统由两部分组成，监测装置（被动采样管和即用型靛蓝三磺酸盐（ITS）固定垫）进行采样和智能手机检测。利用臭氧对ITS进行漂白，并通过图像处理对ITS进行颜色评价。应用菲克第一扩散定律，将蓝色（红色强度）的变化与固定ITS的量相关联，得到臭氧浓度。综合考虑ITS用量、采样时间、环境臭氧浓度等因素，优化了监测条件。该系统为臭氧监测提供了灵活性。在调查条件下，在实际环境空气中，混合比在10 ~ 40 ppbv （20 ~ 78 μg m-3）范围内的臭氧检测是可能的，并通过臭氧连续监测方法对结果进行了验证。提议的系统已应用于柏林（德国）一个地区16个地点（约0.5平方公里）的环境空气臭氧监测。然后利用这些数据计算整个地区的空间分布。监测可以通过将监测装置从各个采样点运送到中心实验室进行；一个操作员每天可以分析100多个样品。或者，可以由不同的操作员在许多不同的采样点进行并行操作，从而实现半实时监测。所提出的系统具有成本效益（每台设备的材料成本低于1美元），并且使用非常简单。拟议的系统支持几个联合国可持续发展目标（sdg），并且具有公民科学应用的潜力。

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引用次数: 0

Comparative analysis of microplastics in aquatic environments: Matching thresholds, abundance versus mass concentration, and risk assessment 水生环境中微塑料的比较分析：匹配阈值，丰度与质量浓度，以及风险评估。

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-07 DOI: 10.1016/j.envpol.2026.127655

Weiping Mei , Jibing Li , Xiaoyan Ding , Shihong Liu , Shibin Qin , Xiaochun Wang , Chunling Luo

Microplastic (MP) pollution assessment faces critical challenges from methodological inconsistencies in detection and risk evaluation frameworks. This study conducts a comparative analysis using water and sediment samples from a karst region in Southwest China to address three key aspects: quantification of MP characterization disparities under differing spectral matching thresholds (0.600 vs. 0.800); comparative assessment of abundance versus mass concentration metrics; and evaluation of five distinct ecological risk assessment methodologies. Results showed that lowering matching threshold significantly increased MP types and abundances, reshaping spatial patterns and polymer rankings and thereby indicating higher risk levels. Crucially, abundance and mass concentration metrics yielded conflicting assessments. Risk assessment comparisons revealed systematically higher risk categorizations by traditional indices: pollution load index, polymer hazard index, and ecological risk index classified >83.0 % of sites as high-risk, whereas ecotoxicity-based methods including risk quotient (RQ) and ecological risk quotient (ERQ) indicated only 25.0 % of sites posed high risk. This highlights the comparative advantage of RQ/ERQ frameworks incorporating species sensitivity distributions and probabilistic MP diversity adjustments. Consequently, this study provides a new standardized methodological framework, establishing that the 0.800 matching thresholds, dual metric reporting (abundance and mass), and ecotoxicity-based risk indices are essential for accurate MP pollution characterization and mitigation prioritization globally.

微塑料（MP）污染评估面临着检测和风险评估框架方法不一致的严峻挑战。本研究利用西南喀斯特地区的水和沉积物样品进行了对比分析，以解决三个关键问题：不同光谱匹配阈值（0.600 vs. 0.800）下MP表征差异的量化；丰度与质量浓度指标的比较评估；并对五种不同的生态风险评估方法进行了评价。结果表明，降低匹配阈值显著增加了MP的种类和丰度，重塑了空间格局和聚合物排名，从而表明更高的风险水平。关键是，丰度和质量浓度指标产生了相互矛盾的评估。风险评估比较结果显示，传统的污染负荷指数、聚合物危害指数和生态风险指数对风险的分类较高，其中83.0%为高风险，而基于生态毒性的风险商（RQ）和生态风险商（ERQ）方法对高风险的分类仅为25.0%。这突出了结合物种敏感性分布和概率MP多样性调整的RQ/ERQ框架的比较优势。因此，本研究提供了一个新的标准化方法框架，确定了0.800匹配阈值、双度量报告（丰度和质量）和基于生态毒性的风险指数对于准确的全球MP污染表征和缓解优先级至关重要。

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引用次数: 0

Complementary strengths of eDNA and morphology in assessing chemical stress on freshwater plankton communities: Evidence from mesocosm experiments eDNA和形态学在评估淡水浮游生物群落化学胁迫中的互补优势：来自中生态实验的证据

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-07 DOI: 10.1016/j.envpol.2026.127652

Kai-Sheng Yao , Paul J. Van den Brink , Lu-Kai Qiao , Pei-Liang Zhou , Li-Juan Tan , Feng-Jiao Peng , Guang-Guo Ying

Pharmaceuticals and personal care products, particularly antibiotics and antimicrobial agents, are ubiquitously detected in freshwater ecosystems, yet their community- and ecosystem-level ecological risks remain inadequately understood. Conventional ecotoxicological assessments of chemical stressors in freshwater ecosystems have been limited by narrow taxonomic coverage, often relying on morphology-based identification. To address these limitations, we performed outdoor mesocosm experiments to assess the effects of environmentally relevant concentrations of ciprofloxacin and triclosan on freshwater plankton communities using environmental DNA (eDNA) metabarcoding, compared to traditional morphology-based identification methods. Our results showed that eDNA consistently detected higher genus richness for cyanobacteria and phytoplankton than morphology, despite the relatively limited overlap in genera identified by both methods. The two methods exhibited compound- and taxonomic group-specific sensitivities: eDNA outperformed morphology in detecting changes in taxonomic richness under ciprofloxacin exposure and shifts in community composition under triclosan exposure. In contrast, morphology was more effective in capturing ciprofloxacin-induced shifts in community composition and triclosan-induced declines in taxonomic richness. Collectively, eDNA- and morphology-based assessments yielded partially congruent outcomes, highlighting their complementary strengths in detecting chemical-induced changes in freshwater plankton communities. Overall, our findings suggest that integrating eDNA into regulatory frameworks could substantially enhance the accuracy of risk assessments and strengthen environmental monitoring strategies.

药品和个人护理产品，特别是抗生素和抗菌剂，在淡水生态系统中无处不在，但它们在社区和生态系统层面的生态风险仍未得到充分认识。淡水生态系统中化学胁迫源的传统生态毒理学评估受到分类覆盖范围狭窄的限制，往往依赖于基于形态的鉴定。为了解决这些局限性，我们进行了室外中生态实验，利用环境DNA （eDNA）元条形码来评估环丙沙星和三氯生对淡水浮游生物群落的影响，并与传统的基于形态学的鉴定方法进行了比较。我们的研究结果表明，尽管两种方法鉴定的属重叠相对有限，但eDNA始终检测到蓝藻和浮游植物的属丰富度高于形态学。这两种方法均表现出化合物和分类群体特异性的敏感性：eDNA在检测环丙沙星暴露下的分类丰富度变化和三氯生暴露下的群落组成变化方面优于形态学。相比之下，形态学在捕捉环丙沙星引起的群落组成变化和三氯生引起的分类丰富度下降方面更有效。总的来说，基于eDNA和形态学的评估产生了部分一致的结果，突出了它们在检测淡水浮游生物群落化学诱导变化方面的互补优势。总的来说，我们的研究结果表明，将eDNA纳入监管框架可以大大提高风险评估的准确性，并加强环境监测策略。

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引用次数: 0

Variations in soil HONO emissions under greenhouse field conditions and their driving mechanisms 温室大田条件下土壤HONO排放变化及其驱动机制

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-06 DOI: 10.1016/j.envpol.2026.127637

Saiwei Zhang , Min Zhou , Xiaoyong Qian , Hongli Wang , Yefei Zhao , Jiacheng Zeng , Yuhang Wu , Xiang Ding , Yafang Cheng , Hang Su

Background

Atmospheric nitrous acid (HONO), a precursor of hydroxyl radicals, is a key species influencing atmospheric chemistry and air quality. Soils have been identified as important sources of HONO emissions; however, greenhouse soils have so far remained unexplored.

Methodology

Filed observation of soil HONO emissions was conducted along with metatranscriptomic analyses across different phases of vegetable cultivation in a greenhouse in this study to investigate the variations in soil HONO emissions and explore their driving mechanisms.

Major results and conclusions

The results show that HONO fluxes from greenhouse soils reached 18.89 ng N m⁻² s⁻¹ following fertilization. The findings demonstrated that greenhouse soils were important source of HONO emissions that may need to be considered in global atmospheric budgets. Moreover, variations in HONO emissions in the greenhouse field were primarily affected by soil electrical conductivity. Metatranscriptomic analyses revealed that the transcription of narH and nasA in Bacillariophyta and nmo in Actinomycetota might contribute to elevated HONO emissions. In addition, microbial nitroalkane oxidation was identified as a potential mechanism of soil HONO production, operating alongside nitrate reduction. Therefore, future studies should more comprehensively address the mechanistic and budgetary implications of soil HONO emissions.

大气中亚硝酸（HONO）是影响大气化学和空气质量的关键物质，是羟基自由基的前体。土壤已被确定为HONO排放的重要来源；然而，到目前为止，温室土壤仍未被开发。本研究通过对温室蔬菜栽培不同阶段土壤HONO排放的现场观测和亚转录组学分析，探讨土壤HONO排放的变化及其驱动机制。结果表明：施肥后温室土壤HONO通量达到18.89 ng N m−2 s−1；研究结果表明，温室土壤是HONO排放的重要来源，可能需要在全球大气预算中加以考虑。此外，温室田HONO排放的变化主要受土壤电导率的影响。亚转录组学分析显示，硅藻门中narH和nasA的转录以及放线菌门中nmo的转录可能导致HONO排放增加。此外，微生物硝基烷烃氧化被确定为土壤HONO产生的潜在机制，与硝酸盐还原一起作用。因此，未来的研究应更全面地解决土壤HONO排放的机制和预算影响。

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引用次数: 0

Effects of polyethylene microplastics and cadmium co-contamination on the soybean-soil system: Integrated metabolic and rhizosphere microbial mechanisms 聚乙烯微塑料和镉共污染对大豆-土壤系统的影响：综合代谢和根际微生物机制

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-06 DOI: 10.1016/j.envpol.2026.127643

Weijun Wang , Kaifan Zhang , Zhimin Liu , Xiaolu Liu , Xu Wang

The coexistence of microplastics (MPs) and heavy metals in agricultural soils presents complex and poorly understood ecological risks. While previous studies have examined the individual effects of these pollutants, the interactive mechanisms governing their combined impact on plant-soil systems, particularly through integrated metabolic and microbial pathways remain unclear. This study investigated the effects of polyethylene microplastics (PE-MPs) and cadmium (Cd) co-exposure on soybean-soil systems. Under moderate Cd exposure (20 mg/kg), specific PE-MPs concentrations (1 % and 5 %) enhanced Cd accumulation in soybean roots, whereas this trend reversed under high Cd levels (50 mg/kg). Co-exposure maintained stable shoot growth through activation of stress-response pathways (β-alanine, porphyrin, and pantothenate metabolism). Rhizosphere microbiome analysis revealed that 5 % and 10 % PE-MPs reduced the abundance of Sphingomonas and Bradyrhizobium in Cd-contaminated soil and suppressed nitrogen-cycling functionality. Integrated metabolite-microbe network analysis identified malonyldaidzin as a potential mediator linking soybean leaf metabolism with rhizobacterial interactions, associated with root Cd accumulation. These findings demonstrate that PE-MPs fundamentally alter Cd behavior through tripartite plant-metabolite-microbe interactions, thereby highlighting the need to incorporate MPs effects into ecological risk assessments of heavy metal contamination in agricultural ecosystems.

农业土壤中微塑料（MPs）和重金属的共存呈现出复杂且鲜为人知的生态风险。虽然以前的研究已经检查了这些污染物的个别影响，但控制它们对植物-土壤系统的综合影响的相互作用机制，特别是通过综合代谢和微生物途径，仍然不清楚。本研究探讨了聚乙烯微塑料（PE-MPs）和镉（Cd）共暴露对大豆-土壤系统的影响。在中等Cd暴露（20 mg/kg）下，特定PE-MPs浓度（1%和5%）促进了大豆根系Cd的积累，而在高Cd暴露（50 mg/kg）下，这一趋势逆转。共暴露通过激活应激反应通路（β-丙氨酸、卟啉和泛酸代谢）来维持茎的稳定生长。根际微生物组分析表明，5%和10%的PE-MPs降低了cd污染土壤鞘氨单胞菌和慢生根瘤菌的丰度，抑制了氮循环功能。综合代谢物-微生物网络分析发现，丙二醛大豆苷是大豆叶片代谢与根际细菌相互作用的潜在媒介，与根系Cd积累有关。这些研究结果表明，PE-MPs通过植物-代谢物-微生物三方相互作用从根本上改变Cd行为，从而突出了将MPs效应纳入农业生态系统重金属污染生态风险评估的必要性。

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引用次数: 0

Association study of internal exposure levels of perfluoroalkyl substances and blood lipid levels in the elderly population and adverse Outcome pathway analysis 老年人全氟烷基物质内暴露水平与血脂水平的相关性研究及不良后果通路分析

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-06 DOI: 10.1016/j.envpol.2026.127644

Wei Liu , Yawen Zheng , Yafei Gao , Wu Liu , Zhuoya Yu , Xinmiao Yu , Hongkai Zhu , Yiming Yao , Lin Zhu , Hongwen Sun , Hongzhi Zhao

Previous research on per- and polyfluoroalkyl substances (PFAS) and blood lipids in the elderly is limited, and the mechanisms by which PFAS affect lipid levels remain unclear. This study aims to investigate the association between PFAS exposure and blood lipid levels in the elderly and to construct Adverse Outcome Pathways (AOP) using toxicological databases. The study included 753 individuals aged 65 and above from a rural area in Northwest China. Serum concentrations of 32 PFAS were measured, and 16 of them were included in the statistical analysis. Linear regression models and restricted cubic spline models were used to examine the associations between PFAS exposure and blood lipid levels. Additionally, Bayesian kernel machine regression was applied to assess the mixture effects of PFAS exposure. The results showed that perfluorooctanoic acid (PFOA) was significantly positively correlated with total cholesterol (β = 0.55, 95 % CI: 0.18, 0.92), while perfluoro-2-propoxypropanoic acid (HFPO-DA) was negatively associated with total cholesterol (β = −0.35, 95 % CI: 0.50, −0.20). Through AOP network analysis, the peroxisome proliferator-activated receptor alpha (PPARα) was identified as a key molecular target through which these two PFAS exposure may influence lipid levels. These findings provide new evidence for understanding the impact of PFAS on blood lipid levels in the elderly population.

以往关于全氟烷基和多氟烷基物质（PFAS）与老年人血脂的研究有限，PFAS影响血脂水平的机制尚不清楚。本研究旨在探讨PFAS暴露与老年人血脂水平之间的关系，并利用毒理学数据库构建不良结局通路（AOP）。该研究包括753名来自中国西北农村地区的65岁及以上的人。测定32例PFAS血清浓度，其中16例纳入统计分析。使用线性回归模型和限制三次样条模型来检查PFAS暴露与血脂水平之间的关系。此外，贝叶斯核机回归应用于评估PFAS暴露的混合效应。结果表明，全氟辛酸（PFOA）与总胆固醇呈显著正相关（β = 0.55, 95% CI: 0.18, 0.92），而全氟-2-丙氧基丙烷酸（HFPO-DA）与总胆固醇呈显著负相关（β = - 0.35, 95% CI: 0.50, - 0.20）。通过AOP网络分析，确定过氧化物酶体增殖激活受体α (PPARα)是这两种PFAS暴露可能影响脂质水平的关键分子靶点。这些发现为了解PFAS对老年人血脂水平的影响提供了新的证据。

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引用次数: 0

Safer solutions for sea: Montipora capricornis coral responses to naturally-derived versus copper-based antifouling agents 更安全的海洋解决方案：摩羯珊瑚对天然衍生防污剂和铜基防污剂的反应

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-06 DOI: 10.1016/j.envpol.2026.127635

Xinxian Dai , Lei Jiang , Jiyong Zheng , Tao Yuan , Hui Huang , Xiaolin Lu

While conventional synthetic antifouling agents (AFs) threaten coral reef ecosystems, the environmental safety profiles of naturally-derived AFs remain inadequately studied. To this end, a synthetic AF Cu₂O, and 7 naturally-derived ones (7-Amino-4-methylcoumarin (AMC), butenolide, ε-polylysine (EPL), camptothecin (CPT), eugenol, gramine, and BAF-1) were chosen for a comparative study to reveal the physiological responses of coral Montipora capricornis. The selected AF concentration was 50 μg/L, referenced from Cu₂O bleaching-inducing concentration. After 15 days, Cu₂O demonstrated the most substantial adverse effects: tissue loss and bleaching severity, zooxanthellae density reduction, chlorophyll a (Chl a) content decline, and antioxidant enzyme activity alteration; while butenolide had the least significant effects; and the rest AFs showed intermediate stress responses. Further proteomic landscapes focusing on Cu₂O and butenolide revealed that Cu₂O had intensely downregulated proteins involved in photosynthesis, the Calvin cycle, glycolysis, the tricarboxylic acid (TCA) cycle, and calcification in both symbiont and coral host. Notably, butenolide had no effect on calcification-related proteins. This integrative proteomics-physiological approach represents the first simultaneous assessment of multiple naturally-derived antifoulants on coral holobiont responses, revealing distinct mechanisms of toxicity divergence between metallic and non-metallic compounds. Notably, butenolide preferentially suppresses energy metabolism while sparing calcification-related proteins, suggesting fundamentally different toxicological pathways than Cu-based alternatives.

虽然传统的合成防污剂（AFs）对珊瑚礁生态系统构成威胁，但对天然合成防污剂的环境安全性研究仍不充分。为此，我们选择了一种人工合成的afcu2o和7种天然衍生的afcu2o（7-氨基-4-甲基香豆素（AMC）、丁烯内酯、ε-聚赖氨酸（EPL）、喜树碱（CPT）、丁香酚、谷草胺和BAF-1）进行对比研究，以揭示Montipora capricornis珊瑚的生理反应。选取的AF浓度为50 μg/L，以Cu2O致漂浓度为参考。15 d后，Cu2O表现出最显著的不良反应：组织损失和漂白严重，虫黄藻密度降低，叶绿素a （Chl a）含量下降，抗氧化酶活性改变；丁烯内酯的效果最不显著；其余AFs表现为中等应激反应。进一步聚焦于Cu2O和丁烯内酯的蛋白质组学研究表明，Cu2O强烈下调了共生体和珊瑚宿主光合作用、卡尔文循环、糖酵解、三羧酸（TCA）循环和钙化过程中的蛋白质。值得注意的是，丁烯内酯对钙化相关蛋白没有影响。这种综合蛋白质组学-生理学方法首次同时评估了多种天然来源的抗污剂对珊瑚全息生物的反应，揭示了金属和非金属化合物之间毒性差异的独特机制。值得注意的是，丁烯内酯优先抑制能量代谢，同时保留钙化相关蛋白，这表明与铜基替代品相比，丁烯内酯的毒理学途径存在根本不同。

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引用次数: 0

Letter to the Editor of environmental pollution. 致环境污染编辑的信。

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-05 DOI: 10.1016/j.envpol.2025.127506

Anthony Kriech

引用次数: 0

Reply to the Letter: Practical interpretations of combustion process of asphalt material and associated asphalt fume in high temperature scenarios 复函：高温场景下沥青材料燃烧过程及伴生沥青油烟的实践解读

IF 8.9 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-05 DOI: 10.1016/j.envpol.2025.127507

Fusong Wang

引用次数: 0

Leaching of microplastics enhanced through complex soil meso- and macrofaunal community transport 复杂土壤中、大型动物群落迁移促进微塑料淋溶

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution

Pub Date : 2026-01-05 DOI: 10.1016/j.envpol.2026.127638

Elise Quigley , José P. Sousa , Maria J.I. Briones

Microplastics (MPs) are emerging pollutants in soils that have a negative impact on the survival and reproduction of soil organisms. However, very little is known about soil fauna's role as transport agents of MPs into deeper soil layers. Here, we explored the effects of soil meso- (collembolans) and macrofauna (earthworms) on the distribution of linear low-density polyethylene MPs (LLDPE-MPs) down the soil profile in a mesocosm incubation experiment. Sixty PVC columns (10 cm in diameter x 23 cm in height), filled with agricultural soil, received 250 mg of LLDPE-MPs (300–600 μm) and soil organisms: earthworms belonging to three different ecological groups (epigeic, endogeic and anecic), and collembolans (a fixed mixture of epedaphic, hemiedaphic and euedaphic species), either as monocultures or in combination (all earthworm groupings, epigeic + Collembola, endogeic + Collembola, anecic + Collembola and all earthworm groupings + Collembola). Animal treatments without addition of LLDPE-MPs were also established as controls. Results showed that LLDPE-MPs were consistently leached in the control units after 14 days (66.75 LLDPE-MP particles leached in total), implying that infiltrating water alone can transport LLDPE-MPs down through the soil matrix. However, this downward movement of LLDPE-MPs into the leachate was significantly increased by ∼158 % (172.25 LLDPE-MP particles leached) when anecic earthworms were present and increased by ∼172 % (181.5 LLDPE-MP particles leached) when the mixture of the three earthworm ecological groupings were present. Leaching of LLDPE-MPs also increased when Collembola were combined with anecic worms and with the three-earthworm combination by ∼225 % (217 LLDPE-MP particles leached) and ∼276 % (250.75 LLDPE-MP particles leached), respectively (compared to controls). These findings suggest that most prominently anecic burrowing activity and the interactions between macro- and mesofauna enhance the vertical transport of MPs to deeper soil layers and leaching from soil at this limited experimental scale. We suggest that future studies on MP transport in soils include a more complex and representative population of soil organisms to account their collective influence on MP transport, so that predictive modelling for MP transport can faithfully factor in meso- and macrofauna variables.

微塑料（MPs）是土壤中新兴的污染物，对土壤生物的生存和繁殖产生负面影响。然而，我们对土壤动物作为MPs进入更深土层的运输媒介的作用知之甚少。在这里，我们探讨了土壤中观动物（collebolans）和大型动物（蚯蚓）对线性低密度聚乙烯MPs （LLDPE-MPs）在土壤剖面上分布的影响。60个PVC柱（直径10厘米×高23厘米），填充农业土壤，接受250毫克的LLDPE-MPs （300-600 μm）和土壤生物：属于三个不同生态类群的蚯蚓（附生、内生和内生）和线虫（附生、半生和原生物种的固定混合物），无论是单一培养还是组合（所有蚯蚓类群、附生+弹体、内生+弹体、anecic +弹体和所有蚯蚓类群+弹体）。不添加LLDPE-MPs的动物处理也作为对照。结果表明，14天后，LLDPE-MPs在对照单元中持续浸出（共浸出66.75个LLDPE-MPs颗粒），这表明仅通过渗透水就可以将LLDPE-MPs通过土壤基质向下输送。然而，当存在anecic蚯蚓时，LLDPE-MPs向渗滤液的这种向下运动显著增加了~ 158%（浸出172.25 LLDPE-MP颗粒），当存在三种蚯蚓生态组的混合物时，LLDPE-MP颗粒增加了~ 172%（浸出181.5 LLDPE-MP颗粒）。当弹线虫与anecic蠕虫和三蚯蚓组合时，LLDPE-MPs的浸出量也分别增加了~ 225%（浸出217个LLDPE-MP颗粒）和~ 276%（浸出250.75个LLDPE-MP颗粒）（与对照组相比）。这些发现表明，在这个有限的实验规模下，最显著的是植物的挖洞活动以及宏观和中游动物之间的相互作用增强了MPs向更深土层的垂直运输和土壤的淋滤。我们建议未来对土壤中多聚磷迁移的研究包括更复杂和更具代表性的土壤生物种群，以考虑它们对多聚磷迁移的集体影响，以便多聚磷迁移的预测模型可以忠实地考虑中、大型动物变量。

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引用次数: 0