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Spatial-temporal distribution of microplastics and their source/sink effects in a typical plateau small lake
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Xiao LI1, 2, Qing-guo YU1, 2, *, Hang WANG1, 2, Bo LI3, Xue-yang XIE1, 2, Yang LIU1, 2
China Environmental Science | 2025, 45(9) : 5236 - 5244
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China Environmental Science | 2025, 45(9): 5236-5244
• Emerging Contaminants •
Spatial-temporal distribution of microplastics and their source/sink effects in a typical plateau small lake
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Xiao LI1, 2, Qing-guo YU1, 2, *, Hang WANG1, 2, Bo LI3, Xue-yang XIE1, 2, Yang LIU1, 2
Affiliations
  • 1.Yunnan Key Laboratory of Plateau Wetland Conservation, Restoration and Ecological Services, College of Ecology and Environment (College of Wetlands), Southwest Forestry University, Kunming 650224, China
  • 2.Dianchi Lake Ecosystem Observation and Research Station of Yunnan Province, Southwest Forestry University, Kunming 650228, China
  • 3.School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
Published: 2025-09-20
Outline
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Jianhu Lake, a small plateau lake in Yunnan Province, was selected as the study area. The spatio-temporal distributions of microplastics in water of Jianhu Lake were studied, and the microplastic fluxes from the influent and effluent rivers were explored through field sample collection and laboratory experiment. Then, the source or sink effects of small plateau lakes on microplastics were revealed. The results showed that the average abundances of microplastics in water of Jianhu Lake were (4.80±2.85) and (12.61±8.00) n/m3 in wet and dry seasons, respectively. The average monthly fluxes into the lake were (55.59×106) and (3.82×106) n, respectively. The monthly fluxes out of the lake were (13.70×106) and (9.80×106) n, respectively. The rayon (RY), polyethylene terephthalate (PET), and low density styrene-butadiene-styrene (SBS) were the main polymers types in water of Jianhu Lake. The degree of microplastic pollution in water of Jianhu Lake was higher in the dry season than that in the wet season. The microplastics from influent rivers had a significant contribution to the accumulation of microplastics in water of Jianhu Lake. Generally, Jianhu Lake was the sink of microplastics, while the "source" and "sink" roles of lakes on microplastics were the dynamic process under the different conditions.

Jianhu Lake  /  microplastic  /  seasonal variation  /  flux  /  source/sink
李潇, 喻庆国, 王行, 李波, 谢雪杨, 刘阳. 典型高原小型湖泊微塑料时空分布及源/汇作用. 中国环境科学, 2025 , 45 (9) : 5236 -5244 .
Xiao LI, Qing-guo YU, Hang WANG, Bo LI, Xue-yang XIE, Yang LIU. Spatial-temporal distribution of microplastics and their source/sink effects in a typical plateau small lake[J]. China Environmental Science, 2025 , 45 (9) : 5236 -5244 .
Appendix
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Year 2025 volume 45 Issue 9
67
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Article Info
  • Receive Date：2025-02-10
  • Online Date：2026-10-08
  • Published：2025-09-20
Article Data
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History
  • Received：2025-02-10
Funding
Affiliations
    1.Yunnan Key Laboratory of Plateau Wetland Conservation, Restoration and Ecological Services, College of Ecology and Environment (College of Wetlands), Southwest Forestry University, Kunming 650224, China
    2.Dianchi Lake Ecosystem Observation and Research Station of Yunnan Province, Southwest Forestry University, Kunming 650228, China
    3.School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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