Article
?
AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button.
Tier 2
?
Original research — experimental, observational, or case-control study. Direct primary evidence.
Environmental Sources
Sign in to save
Distribution and weathering characteristics of microplastics in paddy soils following long-term mulching: A field study in Southwest China
The Science of The Total Environment2022
97 citations
?
Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 50
?
0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Jie Yang,
Jie Yang,
Jie Yang,
Jie Yang,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Lianzhen Li
Ruijie Li,
Ruijie Li,
Yudong Feng,
Ruijie Li,
Lianzhen Li
Lianzhen Li
Lianzhen Li
Chen Tu,
Yudong Feng,
Chen Tu,
Chen Tu,
Lianzhen Li
Lianzhen Li
Ruijie Li,
Lianzhen Li
Yudong Feng,
Yudong Feng,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Lianzhen Li
Lianzhen Li
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Jie Yang,
Kaifu Song,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Lianzhen Li
Chen Tu,
Lianzhen Li
Chen Tu,
Jie Yang,
Lianzhen Li
Yongming Luo,
Ruijie Li,
Lianzhen Li
Lianzhen Li
Ruijie Li,
Ruijie Li,
Chen Tu,
Jie Yang,
Lianzhen Li
Chen Tu,
Lianzhen Li
Ruijie Li,
Yudong Feng,
Jie Yang,
Yongming Luo,
Ruijie Li,
Lianzhen Li
Lianzhen Li
Yongming Luo,
Ruijie Li,
Jie Yang,
Ruijie Li,
Ruijie Li,
Lianzhen Li
Jie Yang,
Yongming Luo,
Chen Tu,
Chen Tu,
Chen Tu,
Jie Yang,
Jie Yang,
Jie Yang,
Jie Yang,
Jie Yang,
Jie Yang,
Jie Yang,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Lianzhen Li
Yongming Luo,
Yongming Luo,
Chen Tu,
Yudong Feng,
Chen Tu,
Chen Tu,
Yongming Luo,
Lianzhen Li
Yudong Feng,
Lianzhen Li
Chen Tu,
Chen Tu,
Ruijie Li,
Chen Tu,
Yongming Luo,
Chen Tu,
Ruijie Li,
Yongming Luo,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Yongming Luo,
Yongming Luo,
Lianzhen Li
Chen Tu,
Yongming Luo,
Yongming Luo,
Chen Tu,
Chen Tu,
Jie Yang,
Jie Yang,
Chen Tu,
Hua Xu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Chen Tu,
Lianzhen Li
Chen Tu,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Chen Tu,
Lianzhen Li
Lianzhen Li
Chen Tu,
Yongming Luo,
Chen Tu,
Yongming Luo,
Chen Tu,
Lianzhen Li
Chen Tu,
Yongming Luo,
Chen Tu,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Lianzhen Li
Jie Yang,
Chen Tu,
Yongming Luo,
Yongming Luo,
Yongming Luo,
Chen Tu,
Lianzhen Li
Summary
Researchers investigated microplastic distribution in paddy soils following long-term plastic film mulching in Southwest China, finding that ten years of continuous mulching significantly increased filmy microplastic accumulation and that weathering altered the chemical properties of these particles.
Agricultural plastic-film residues have been considered as one of the important sources of microplastics in the agroecosystem. However, limited researches were conducted on the accumulation of microplastics in long-term film-mulched paddy soil. This study aims to investigate the distribution and the weathering characteristics of filmy microplastics in a mulched paddy field (non-mulch, four years of mulched, and ten years of continuous mulched soil were investigated) in Southwest China. More than 50 % of the microplastics in the mulched soil were 1-3 mm, whereas the largest percentage of the microplastics in the non-mulched soil was <1 mm (55.3 %). Microplastic compositions in this field mainly consist of polyester (PES) and polyethylene (PE) (82.1 %). The abundance of microplastics increases with the film mulching time, which were 76.2 ± 18.4, 118.6 ± 44.8, and 159.6 ± 23.5 items kg in soil with non-mulching, four years of mulching, and ten years of continuous mulching, respectively. The filmy microplastics accumulated annually in the plough layer is estimated at 18.1 million items ha. Weathering characteristics of filmy microplastics extracted from paddy soil were characterized using FTIR, SEM-EDS, AFM, and contact angle meter. The vinyl, carbonyl, and hydroxyl indices calculated from FTIR results showed that the degradation degree of microplastics incereased as mulching time rose; compared with commercial PE films, the oxygen-containing functional groups of soil-extracted PE films were increased. This study revealed the status of microplastic pollution in paddy soil with long-term mulching. It provided primary data and a scientific basis for further study on environmental behavior and ecological impacts of microplastics in agricultural soils.