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Zhiguo Li¹, Bo Xu², Runhua Zhang³

¹Key Laboratory of Aquatic Botany and Watershed Ecology, Chinese Academy of Sciences, Wuhan, Wuhan Botanical Garden, 430074, China; Danjiangkou Wetland Ecosystem Field Scientific Observation and Research Station, The Chinese Academy of Sciences & Hubei Province, Wuhan, 430074, China.

|July 2, 2023

概括

微塑料 (MP) 污染对土壤生态系统构成越来越大的威胁. 这项研究发现,丹江口水库周围的土壤中MP含量很高,村庄和土壤pH是关键影响因素.

科学领域:

环境科学环境科学
土壤科学土壤科学
生态毒理学生态毒理学

背景情况:

微塑料 (MP) 是具有重大生态影响的新兴污染物.
水库周围的土壤是重要的积聚区,也是流域MP的来源.
关于MP分布,来源和这些特定环境中的影响因素的数据有限.

研究的目的:

研究丹江口水库周围土壤中MP的分布,丰度和特征.
确定PM污染在农业生态系统中的主要来源和影响因素.
评估水库邻近的农业土壤中MPs所带来的生态风险.

主要方法:

从丹江口水库周围收集和分析了120个土壤样本.
量化了MP的丰富性,确定了聚合物类型 (聚烯,聚胺),形状 (碎片,纤维) 和尺寸 (0.050.5毫米).
利用统计分析来确定MP污染的驱动力 (村庄,pH,土地使用) 和来源 (水库水/沉积物).

主要成果:

MP度在645至15,161个物品/公斤之间,地下 (20-40厘米) 的度高于表面 (0-20厘米) 的度.
聚烯和聚胺是主要的聚合物类型;碎片构成了大多数MP.
村庄的邻近 (51%),土壤pH值 (25%) 和土地使用类型 (10%) 显著影响了MP的丰富性,田的污染程度更高.

结论:

储水和沉积物是农业土壤MPs的重要来源.
丹江口水库附近的农业土壤面临着高度的微塑料风险,特别是田.
调查结果强调需要在水库农业生态系统中进行MP评估,以减轻生态风险.

关键词:

农业土壤农业土壤土地使用情况土地使用情况微塑料是一种微塑料.储水池是一个水库.

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