Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China.
Environ Pollut. 2020 Feb;257:113449. doi: 10.1016/j.envpol.2019.113449. Epub 2019 Oct 23.
Microplastic pollution has become an emergency issue in the global environment. However, little is known about the occurrence and distribution of microplastics in agroecological system. In this study, we investigated the pollution of microplastics in vegetable farmlands in suburb of Wuhan, central China. Results showed that the abundance of microplastics ranged from 320 to 12,560 items/kg Microplastic pollution adjacent to the suburban roads was about 1.8 times as serious as that in the residential areas. Microplastics with size less than 0.2 mm were dominated, reaching 70% in total. The main types of microplastics were fibers and microbeads. Moreover, polyamide (32.5%) and polypropylene (28.8%) were the main types of polymer. This study proclaims the occurrence and characteristics of microplastic pollution in typical farmland soils of suburb land. It may provide significant basis for subsequent research about microplastics contaminant in the terrestrial ecosystem.
微塑料污染已成为全球环境的紧急问题。然而，人们对于微塑料在农业生态系统中的出现和分布知之甚少。在本研究中，我们调查了中国中部武汉市郊区蔬菜农田中的微塑料污染情况。结果表明，微塑料的丰度范围为 320 至 12560 个/千克。靠近郊区道路的微塑料污染比居民区严重约 1.8 倍。粒径小于 0.2mm 的微塑料占主导地位，占总数的 70%。微塑料的主要类型是纤维和微珠。此外，聚酰胺（32.5%）和聚丙烯（28.8%）是主要的聚合物类型。本研究揭示了典型郊区农田土壤中微塑料污染的发生和特征。这可能为后续研究陆地生态系统中微塑料污染物提供重要依据。
