Microplastic contamination in lacustrine sediments in the Qinghai-Tibet Plateau:Current status and transfer mechanisms  

作　　者：Rui-ping Liu Fei Liu Ying Dong Jian-gang Jiao El-Wardany RM Li-feng Zhu 

机构地区：[1]Xi’an center,China Geological Survey,Ministry of Natural Resources,Xi’an 710054,China [2]Shaanxi Province Water Resources and Environment Engineering Technology Research Center,Xi’an 710054,China [3]Western Green Development Research Institute,China Geological Survey,Xi’an 710054,China [4]Key Laboratory for Geo-hazards in Loess Area,Ministry of Natural Resources,Xi’an 710054,China [5]Field Base of Scientific Observation of Shaanxi Tongguan,Ministry of Natural Resources,Xi’an 710054,China [6]Dalian Ocean and Fishery Comprehensive Administration Supervision Lochus,Dalian 116000,China [7]Key Laboratory of Western China’s Mineral Resource and Geological Engineering,Ministry of Education,Xi’an 710054,China [8]School of Earth Science and Land Resources of Chang’an University,Xi’an 710054,China [9]Assiut Branch,Al-Azhar University,Assiut 71524,Egypt

出　　处：《China Geology》2022年第3期421-428,共8页中国地质（英文）

基　　金：funded by the survey projects initiated by the Ministry of Natural Resources of the People’s Republic of China(DD20189220,DD20211317,DD20211398,1212011220224,and 121201011000150022);the project of the 2015 Natural Science Basic Research Plan of Shaanxi Province(2015JM4129);the project of 2016 Fundamental Research Funds for the Central Universities(open fund,310829161128);the project of 2021 Fundamental Research Funds for the Central Universities(open fund).

摘　　要：This paper aims to investigate the present situation and transfer mechanisms of microplastics in lacustrine sediments in the Qinghai-Tibet Plateau.The study surveyed the average abundance of microplastics in sediments.The abundance of microplastics in sediments of lakes from the Qinghai-Tibet Plateau is 17.22-2643.65 items/kg DW and 0-60.63 items/kg DW based on the data of the Qinghai Lake and the Siying Co Basin.The microplastic abundance in sediments from small and medium lakes is very high compared to that in other areas in the world.Like microplastics in other lakes of the world,those in the lakes in the Qinghai-Tibet Plateau mainly include organic polymers PA,PET,PE,and PP and are primarily in the shape of fibers and fragments.The microplastic pollution of lacustrine sediments in the Qinghai-Tibet Plateau is affected by natural changes and by human activities,and the concentration of microplastics in lacustrine ecosystems gradually increases through food chains.Furthermore,the paper suggests the relevant administrative departments of the Qinghai-Tibet Plateau strengthen waste management while developing tourism and pay much attention to the impacts of microplastics in water environments.This study provides a reference for preventing and controlling microplastic contamination in the Qinghai-Tibet Plateau.

关 键 词：Microplastic pollution Environmental pollution LAKE Lacustrine sediment Qinghai Lake Ecological risks Hydrogeological engineering Ecological engineering Qinghai-Tibet Plateau China 

分 类 号：X524[环境科学与工程—环境工程]