Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; Beijing Municipal Key Laboratory of Agriculture Environment Monitoring, Beijing 100097, China; School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China.
School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China.
Sci Total Environ. 2022 Jul 1;828:154544. doi: 10.1016/j.scitotenv.2022.154544. Epub 2022 Mar 15.
Intensive use of plastic film and organic fertilizer in the greenhouse has resulted in microplastic contamination of soil. However, microplastic pollution in different types of greenhouses has not been reported so far. The contamination of microplastics in three different types of greenhouses (abandoned greenhouse, normal greenhouse, and simple greenhouse) were investigated. The abundance of microplastics in abandoned greenhouse reached as high as 2215.56 ± 1549.86 items kg, followed by normal greenhouse (891.11 ± 316.71 items kg), and simple greenhouse (632.50 ± 566.93 items kg). The mean abundance of microplastic organic fertilizer, and irrigation water were 1486.67 ± 140.48 items kg, and 4.2 items L, respectively. The abundance of microplastics in the shallow soils of abandoned greenhouse (826.67 ± 261.02) and normal greenhouse (560.00 ± 52.92 items kg) were lower than those in the deep soils (1073.33 ± 306.16 and 720.00 ± 111.36 items kg), while the simple greenhouse showed the opposite result. Microplastic was found to be primarily fragment-shaped, white in color, and 0-1 mm in size, and the polymers of microplastics were polypropylene (PP) and polyethylene (PE). White was the most frequently observed color in the abandoned greenhouse (46.1%) and normal greenhouse (32.2%), while the dominant color in the simple greenhouse was yellow (23.1%). This study provides first-hand data for the pollution characteristics of microplastics in different greenhouse soils and explores the primary sources of microplastics in the greenhouse soil.
温室中大量使用塑料薄膜和有机肥导致了土壤中微塑料的污染。然而，目前尚未有关于不同类型温室中微塑料污染的报道。本研究调查了三种不同类型温室（废弃温室、普通温室和简易温室）中微塑料的污染情况。废弃温室中微塑料的丰度高达 2215.56 ± 1549.86 个·kg，其次是普通温室（891.11 ± 316.71 个·kg）和简易温室（632.50 ± 566.93 个·kg）。微塑料、有机肥和灌溉水中的丰度分别为 1486.67 ± 140.48 个·kg、1486.67 ± 140.48 个·kg 和 4.2 个·L。废弃温室和普通温室浅层土壤中微塑料的丰度（826.67 ± 261.02 个·kg 和 560.00 ± 52.92 个·kg）均低于深层土壤（1073.33 ± 306.16 个·kg 和 720.00 ± 111.36 个·kg），而简易温室则相反。微塑料主要呈碎片状，颜色为白色，大小为 0-1mm，微塑料的聚合物为聚丙烯（PP）和聚乙烯（PE）。废弃温室（46.1%）和普通温室（32.2%）中白色是最常见的颜色，而简易温室中黄色（23.1%）是最常见的颜色。本研究为不同温室土壤中微塑料污染特征提供了第一手资料，并探讨了温室土壤中微塑料的主要来源。
