Macro- and micro-plastic accumulation in soils under different intensive farming systems: A case study in Quzhou county, the North China Plain
文献类型： 外文期刊
作者： Zhang, Hanyue 1 ; Yang, Xiaomei 2 ; Wang, Kai 1 ; Cui, Jixiao 4 ; Ritsema, Coen J. 2 ; Yan, Changrong 4 ; Liu, Xuejun 1 ; Geissen, Violette 2 ;
作者机构： 1.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management,Key Lab Pl, Beijing 100193, Peoples R China
2.Wageningen Univ & Res, Soil Phys & Land Management, NL-6700 AA Wageningen, Netherlands
3.Northwest A&F Univ, Coll Resources & Environm Sci, Yangling 712100, Peoples R China
4.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing, Peoples R China
5.Minist Agr & Rural Affairs, Key Lab Prevent & Control Residual Pollut Agr Film, Beijing, Peoples R China
关键词： Macro/micro-plastics; Intensive farming systems; Plastic film; North China Plain
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：7.3； 五年影响因子：8.1 ）
ISSN： 0269-7491
年卷期： 2025 年 364 卷
页码：
收录情况： SCI
摘要： The macroplastics (MaPs) and microplastics (MiPs) polluting agricultural soils raise great concerns. Unfortunately, scientists know little about the occurrence of MaPs/MiPs in soil among different farming systems. In this study, we analyzed MaPs/MiPs in soils (0-30 cm) collected from six different farming systems (wheat-maize rotations, cotton, vegetables, permanent orchards, greenhouses with and without mulching) in Quzhou county, the North China Plain, by using fluorescence microscope and micro-Fourier transform infrared spectroscopy. The results showed that the abundance of MaPs and MiPs ranged from 0.2 to 46.8 kg ha(-1), and 4.1 x 10(3)-3.7 x 10(4) items kg(-1), respectively. The prominent colors of the MaPs were white and black. The predominant shape, size and chemical composition of soil MiPs were fragments (45-62%), <1 mm (98-99%), and polyethylene (38-43%), respectively. MaPs were mainly detected in the 0-10 cm soil layer. MiP abundance in the 0-10 cm soil layer was significantly higher than that in the 20-30 cm soil layers among different farming systems, except for the fields with wheat-maize rotations and permanent orchards (p < 0.05). Overall, cotton fields showed the highest MaP and MiP abundance, followed by vegetable fields and orchards. Redundancy analysis revealed that tillage practices and plastic film management greatly influence the size distribution of MiPs. A strong negative correlation between large-sized plastic fractions (0.2-1 mm) and tillage frequency was tested while the years of application of plastic films and the abundance of plastic residues showed a strong positive correlation with small-sized plastic fractions (<0.2 mm). Our findings conclude that agricultural mulch films are an important source of MaPs and MiPs in agricultural soil and distributions are strongly influenced by agricultural management practices and farming systems. Further studies should take farming systems and farming practices into account, thereby exploring the potential mechanisms of plastic fragmentation and granularization in agricultural soil.
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