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Organic fertilizer and irrigation water are the primary sources of microplastics in the facility soil, Beijing

The Science of The Total Environment 2023 56 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.
Sen Guo, Jiajia Zhang, Sen Guo, Jiajia Zhang, Meng Zhao, Jiajia Zhang, Jiajia Zhang, Sen Guo, Sen Guo, Sen Guo, Sen Guo, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Jiajia Zhang, Jiajia Zhang, Lei Zhang, Jiajia Zhang, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Jiajia Zhang, Meng Zhao, Meng Zhao, Jiajia Zhang, Sen Guo, Ning Guo, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Jiajia Zhang, Jiajia Zhang, Jiajia Zhang, Meng Zhao, Jiajia Zhang, Xuexia Wang Xuexia Wang Jiawei Liu, Jiawei Liu, Xuexia Wang Yanhua Chen, Yanhua Chen, Yanhua Chen, Ning Guo, Xuexia Wang Shengtao Wang, Xuexia Wang Xuexia Wang Jiajia Zhang, Yanhua Chen, Jiajia Zhang, Xuexia Wang Xuexia Wang Shengtao Wang, Xuexia Wang Meng Zhao, Jiajia Zhang, Jiawei Liu, Jiajia Zhang, Xuexia Wang Yanhua Chen, Xuexia Wang Xuexia Wang Xuexia Wang Jiajia Zhang, Jiajia Zhang, Meng Zhao, Meng Zhao, Meng Zhao, Baogui Zhang, Lei Zhang, Xuexia Wang Yanhua Chen, Ning Guo, Xuexia Wang Jiajia Zhang, Ning Guo, Jiajia Zhang, Xuexia Wang Baogui Zhang, Baogui Zhang, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Jiajia Zhang, Xuexia Wang Xuexia Wang Xuexia Wang Lei Zhang, Lei Zhang, Lei Zhang, Lei Zhang, Lei Zhang, Lei Zhang, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Meng Zhao, Xuexia Wang Xuexia Wang Xuexia Wang Xuexia Wang Xuexia Wang Xuexia Wang Xuexia Wang Jiajia Zhang, Meng Zhao, Sen Guo, Jiajia Zhang, Jiajia Zhang, Jiajia Zhang, Jiajia Zhang, Sen Guo, Shengtao Wang, Jiajia Zhang, Meng Zhao, Xuexia Wang Jiajia Zhang, Meng Zhao, Yanhua Chen, Jiajia Zhang, Jiajia Zhang, Baogui Zhang, Jiajia Zhang, Yanhua Chen, Baogui Zhang, Xuexia Wang Meng Zhao, Jiajia Zhang, Meng Zhao, Jiajia Zhang, Meng Zhao, Jiajia Zhang, Xuexia Wang Jiawei Liu, Lei Zhang, Baogui Zhang, Baogui Zhang, Yanhua Chen, Yanhua Chen, Meng Zhao, Lei Zhang, Jiajia Zhang, Baogui Zhang, Yanhua Chen, Yanhua Chen, Yanhua Chen, Yanhua Chen, Meng Zhao, Baogui Zhang, Yanhua Chen, Yanhua Chen, Meng Zhao, Xuexia Wang

Summary

Researchers found that organic fertilizer and irrigation water are the primary sources of microplastics in Beijing's facility agriculture soils, with microplastic abundance ranging widely across soil depths and posing potential pollution risks.

Polymers
Body Systems

The large-scale utilization of plastic products in agricultural facility production has resulted in considerable accumulation of microplastics in the soil. However, there is a lack of systematic research on the accumulation and distribution of microplastics in facility agriculture. This study examined the presence of microplastics in the 15 representatives of Beijing facility agriculture soil in five districts with different planting years, and assessed the potential pollution risks. The abundance of microplastics in soil layers at a depth of 0-10, 10-20, and 20-30 cm was 896.5 ± 80.0 (range, 160-2120), 630.6 ± 47.0 (180-1340), and 445.3 ± 47.0 (80-1480) items/kg, respectively. Overall, the microplastics were primarily fiber-shaped (72.2 %), white (75.9 %), 1-2 mm in size (37.9 %), and composed of polypropylene and polyethene. The risk assessment indices of the microplastics in the 0-10, 10-20, and 20-30 cm soil layers were 272.1, 289.5, and 291.6, respectively, representing a risk level of 4 in each case. Using the conditional fragmentation model, we found that the microplastics in facility soil featured low stability and small sizes, and their primary sources were organic fertilizer and irrigation water. The number of mulching years, irrigation method, and the amount of organic fertilizer applied, influenced the accumulation of microplastics in the facility soil. This study provides scientific evidence supporting the pollution levels and need for risk control related to microplastics in facility soils.

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