首页|Characteristics and Influencing Factors of Microplastics in Snow in the Inner Mongolia Plateau,China

Characteristics and Influencing Factors of Microplastics in Snow in the Inner Mongolia Plateau,China

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Microplastics(MPs;＜5 mm)have become one of the most prominent global environmental pollution problems.MPs can spread to high altitudes through atmospheric transport and can be deposited by rain-fall or snowfall,potentially threatening the structure and function of natural ecosystems.MPs in terres-trial and aquatic ecosystems alter the growth and functional characteristics of organisms.However,little attention has been given to the possible harm associated with MPs deposited in snow,particularly in the context of global climate warming.MPs collected from surface snow in the Inner Mongolia Plateau,China,were used for quantitative analysis and identification.The results showed that MPs were easily detected,and the related concentration was approximately(68±10)-(199±22)MPs·L-1 in snow samples.Fibers were the most common morphology,the polymer composition was largely varied,and the abundance and composition of MPs were linked to human activity to a great extent.High-throughput sequencing results showed that the composition and abundance of microorganisms also differed in snow samples from areas with different MP pollution characteristics,indicating a considerable difference in microbial functional diversity.MPs may have an interference effect on the individual growth and functional expres-sion of microorganisms in snow.In addition,the results showed that functional living areas(e.g.,landfills and suburban areas)in cities play an important role in the properties of MPs.For instance,the highest abundance of MPs was found in thermal power plants,whereas the abundance of polymers per sample was significantly lower in the suburban area.The MP contaminants hidden in snow can alter microbial structure and function and are therefore a potential threat to ecosystem health.

Human activitiesSnowMicroplasticsMicrobial communityUrban functionEnvironmental effect

Hongwei Yu、Junrong Shao、Huawei Jia、Diga Gang、Baiwen Ma、Chengzhi Hu

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State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China

University of Chinese Academy of Sciences,Beijing 100049,China

Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China

funds for the National Natural Science Foundation of ChinaInternational Cooperation and Exchange of the National Natural Science Foundation of ChinaProgram of the Youth Innovation Promotion Association of Chinese Academy of Sciences

52070183518201050112019044

2024

10.1016/j.eng.2023.02.007

工程(英文)

工程(英文)

CSTPCDEI
ISSN：2095-8099
年,卷(期)：2024.37(6)