<br>滩涂对污染沉积物中持久性有毒物质和重金属的自然净化能力综合评价,Environment International

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滩涂对污染沉积物中持久性有毒物质和重金属的自然净化能力综合评价
Environment International ( IF 10.3 ) Pub Date : 2024-03-01 , DOI: 10.1016/j.envint.2024.108534
Taewoo Kim ₁ , Changkeun Lee ₁ , Inha Kwon ₁ , Junghyun Lee ₂ , Shin Yeong Park ₁ , Dong-U Kim ₁ , Jongmin Lee ₁ , Gayoung Jin ₁ , Mehdi Yousefzadeh ₃ , Hanna Bae ₄ , Yeonjae Yoo ₅ , Jae-Jin Kim ₅ , Junsung Noh ₆ , Seongjin Hong ₇ , Bong-Oh Kwon ₈ , Won Keun Chang ₉ , Gap Soo Chang ₁₀ , Jong Seong Khim ₁

Affiliation

School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
Department of Environmental Education, Kongju National University, Gongju 32588, Republic of Korea.
School of Computer Science, Institute for Research in Fundamental Sciences (IPM), Tehran, Iran.
GeoSystem Research Corporation, Gunpo 15807, Republic of Korea.
Division of Environmental Science & Ecological Engineering, College of Life Science & Biotechnology, Korea University, Seoul 02841, Republic of Korea.
Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea.
Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea.
Department of Marine Biotechnology, Kunsan National University, Kunsan 54150, Republic of Korea.
Korea Maritime Institute, Busan 49111, Republic of Korea.
Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK S7N5E2, Canada.

污染物的自然净化被高度认可为调节生态系统服务；然而，滩涂的净化能力在很大程度上仍然未知和/或未量化。在原位进行了为期60天的中生态移植实验，以评估天然滩涂的净化能力。我们采用了先进的沉积物质量三元组方法，监测 10 个终点，包括化学物质减少、毒性变化和群落恢复。结果表明，受污染的沉积物随着时间的推移迅速恢复，特别是一天内恢复超过 50%，然后在给定时间段（60 天）内缓慢恢复至 70%。所有处理都证明了母体污染物的早期显着减少，这主要是由于活跃的细菌分解。值得注意的是，处理中底栖动物和盐生植物的存在显着提高了污染物净化的功效和效率。预测线性模型进一步表明生物群对滩涂自然净化的附加效应，将完全恢复时间从 500 天减少到 300 天。总体而言，结合机器学习实践的三元组方法成功地展示了对自然净化综合评估的定量洞察。

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Integrated assessment of the natural purification capacity of tidal flat for persistent toxic substances and heavy metals in contaminated sediments

Natural purification of pollutants is highly recognized as regulating ecosystem services; however, the purification capacity of tidal flats remains largely unknown and/or unquantified. A 60-day mesocosm transplant experiment was conducted in situ to assess the purification capacity of natural tidal flats. We adopted the advanced sediment quality triad approach, monitoring 10 endpoints, including chemical reduction, toxicity changes, and community recoveries. The results indicated that contaminated sediments rapidly recovered over time, particularly > 50% within a day, then slowly recovered up to ∼ 70% in a given period (60 days). A significant early reduction of parent pollutants was evidenced across all treatments, primarily due to active bacterial decomposition. Notably, the presence of benthic fauna and vegetated halophytes in the treatments significantly enhanced the purification of pollutants in both efficacy and efficiency. A forecast linear modeling further suggested additive effects of biota on the natural purification of tidal flats, reducing a full recovery time from 500 to 300 days. Overall, the triad approach with machine learning practices successfully demonstrated quantitative insight into the integrated assessment of natural purification.

更新日期：2024-03-01

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