The study investigates 18 sampling sites in the Sheshui River basin of central China for four different land-use types: grassland, dry land, paddy fields, and plastic greenhouses. The total abundance of microplastics was found to be within the range of 875 ± 229–6075 ± 865 n kg−1, with dry land having the highest abundance and greenhouses having the lowest. The leading shapes of microplastics were fibre and fragment, brown in colour, and less than 1 mm in size. Potential sources of microplastics in the region were found to be wastewater irrigation, organic fertiliser application, and plastic mulching film. The results from the study find a positive correlation between carbon and nitrogen in soil samples and microplastic abundance, suggesting that the transformation and degradation of ageing microplastics are primarily associated with soil carbon and nitrogen turnover.
The current study examines the contamination of microplastics in three greenhouse types: abandoned, normal, and simple. The findings revealed that the abundance of microplastics was found to be the highest in the abandoned greenhouse, followed by the normal greenhouse and simple greenhouse. The mean abundance of microplastic organic fertilizer and irrigation water was also high.[…]
The study examines the distribution of residual film after eight years of film mulching in mid-April 2018. Results from the study revealed that eight years of mulching significantly increased the quantity of agricultural mulch film residues in the soil. The size of residual film fragments was found to vary from 0.25 cm2 to 109 cm2,[…]
A study in Yuanmou County, Yunnan Province, investigated microplastic pollution in different land uses, including facility farmland, traditional farmland, orchard, grassland, and woodland. Results showed a significant difference in microplastic abundance and characteristics between different land use types. Facility farmlands, traditional farmlands, and orchard lands had higher microplastic abundance than grasslands and woodlands. The main[…]
The study analysed 225 soil samples from maize planting zones in northern China, revealing that long-term plastic film mulching increases microplastic pollution in agricultural soils. The abundance of microplastics was significantly higher in mulched soils (754 ± 477 items kg-1) than in non-mulched soils (376 ± 149 items kg-1). The length of time with film[…]
The study examined the relative abundances and morphological distributions of microplastics (MPs) in water, sediments, and farmland soils in the Caohai Lake region. The estuary in the study area was considered a potential sink for MP transportation. Transparent and black MPs accounted for a large proportion of MPs in the five environments, with possible sources[…]