Microplastics (MPs) are ubiquitous plastic entities with sizes <5 mm, resistant to degradation and conventional removal processes, and exhibit adverse ecological and human health impacts. The last decade is well-capitalized to explore the occurrence, transportation, sources, and impacts of MPs in the aquatic environment; however, little is known about MPs contamination in wetland systems. Here, we investigated the pollution level of MPs in the surface freshwater and sediment samples collected from the Xijin Wetland Park, which is the largest wetland park in South China, located in Hengxian County, Nanning City, Guangxi Province. Our results showed that the MPs content was ranged from 150 to 1067 n/m³and 4 to 148 n/kg dry weight (dw) in the surface water and sediment samples in the Xijin Wetland Park, respectively. The compositional profiling of MPs revealed ‘fiber’ as the most abundant shape and ‘< 0.05 mm’ as the most copious particle size among both water and sediment samples. ‘blue’ was the most frequent color in water while sediment samples was‘white’, The attenuated total reflectance-Fourier-transform infrared spectroscopy (ATR-FTIR) was employed to analyze the polymer composition of MPs and results showed that rayon (14.55%), followed by polyester (9.09%) and polyethylene (8.18%) as the most frequently detects MPs polymers in the Wetland Park. In summary, this study not only provides the baseline data regarding MPs’ pollution and associated risk but also gives guidelines to control the plastic pollution in the Xijin Wetland Park.

微塑料 (MP) 是无处不在的塑料实体，尺寸小于 5 毫米，可抵抗降解和常规去除过程，并对生态和人类健康产生不利影响。过去十年资金充足，可以探索 MPs 在水生环境中的发生、运输、来源和影响；然而，人们对湿地系统中 MPs 的污染知之甚少。在这里，我们调查了从位于广西省南宁市横县的华南最大湿地公园西津湿地公园采集的地表淡水和沉积物样品中 MP 的污染水平。我们的结果表明 MPs 的含量范围从 150 到 1067 n/m ³西津湿地公园地表水和沉积物样品中的干重 (dw) 分别为 4 至 148 n/kg。MP 的成分分析显示，在水和沉积物样品中，“纤维”是最丰富的形状，“< 0.05 毫米”是最丰富的粒径。“蓝色”是水中最常见的颜色，而沉积物样品是“白色”，采用衰减全反射傅立叶变换红外光谱 (ATR-FTIR) 分析 MPs 的聚合物成分，结果表明人造丝 (14.55% )，其次是聚酯 (9.09%) 和聚乙烯 (8.18%)，它们是湿地公园中最常见的 MPs 聚合物。总之，本研究不仅提供了有关议员污染和相关风险的基线数据，而且还为控制西津湿地公园的塑料污染提供了指导。