Distribution and ecological risks of microplastics in a tropical tourism island area in Hainan, China

被引：0

作者：

Weijie BIAN ^{[1
]}

Rui SUN ^{[1
]}

Yurui LI ^{[1
]}

Shuguo L ^{[2
]}

Dongwei YANG ^{[3
]}

Hongbo LI ^{[4
]}

Yingxu ZENG ^{[1
]}

Min LIU ^{[1
]}

机构：

[1] Yazhou Bay Innovation Institute/Key Laboratory for Coastal Marine Eco-environment Process and Carbon Sink of Hainan Province/Modern Marine Ranching Engineering Research Center of Hainan/College of Ecology and Environment, Hainan Tropical Ocean University

[2] Hainan Academy of Environmental Science

[3] Key Laboratory of Island Tourism Resource Data Mining and Monitoring, Ministry of Culture and Tourism, Hainan Tropical Ocean University

[4] National Marine Environmental Monitoring Center

来源：

Journal of Oceanology and Limnology | 2025年 / 43卷 / 02期

关键词：

D O I：

暂无

中图分类号：

X55 [海洋污染及其防治]; X826 [生物评价、生态评价];

学科分类号：

071012 ; 0713 ; 083002 ; 1402 ;

摘要：

Microplastics are a widely distributed pollutant that threatens the growth and health of marine organisms. Compared to the mainland, island ecosystems with unique characteristics are fragile and sensitive to natural and human interference. We investigated the characteristics and ecological risks of microplastics in the soils of Wuzhizhou Island, Hainan, China, and its surrounding nearshore sediments affected by human activities. Results show that the microplastic abundance in soil was 1116.67 items/kg; the particles were fragmented in size of less than 2 mm, the main polymer types were polypropylene(PP), polyethylene(PE), and polybutylene(PB), in transparent, gray, green, or white. The microplastic abundances in nearshore sediments of Wuzhizhou Island and the surrounding Haitang Bay were 274.67 and 755.17 items/kg, respectively; the particles were mainly fibrous, less than 1 mm in size, the main polymer types were rayon and polyethylene terephthalate(PET), mostly transparent. The abundance of microplastics showed a decreasing trend from shore to sea. Microplastics in the supratidal and intertidal zones differed in mainly the abundance and size. The microplastics in land soil were from tourism activities and infrastructure while the those in nearshore sediments came from not only tourism but also domestic sewage and fishing activities. The ecological risk of microplastics in the terrestrial soils of Wuzhizhou Island was higher than that in its surrounding nearshore sediments. These findings help to gain a deeper understanding of microplastic pollution in the island subjected to intensive human activities, and provide a scientific basis for subsequent in-situ toxicology research on microplastics and plastic pollution control.

引用

页码：433 / 445

页数：13