农业土壤中微塑料的垂直分布和多源途径:研究黄河流域上部典型灌区的研究
Hui Yu1, Weiqing Zhang2, Jiajia Li3
1College of Geographical Science, Inner Mongolia Normal University, No. 81, Zhaowuda Road, Saihan District, Hohhot, Inner Mongolia Autonomous Region, China; Inner Mongolia Geology Engineering Co., Ltd, No. 87, Xinhua East Street, Xincheng District, Hohhot, Inner Mongolia Autonomous Region, China.
Environmental pollution (Barking, Essex : 1987)
|May 24, 2025
概括
微塑料 (MP) 污染了农田土壤,通过灌迁移到更深层. 与滴水灌相比,边界灌显著增加了表面土壤中的MP,并加速了它们的向下运动.
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:
- 农业投入,灌水和大气沉积是土壤中微塑料 (MP) 的关键来源.
- 灌可以将国会议员从表面土壤驱动到更深的含水层,造成生态和健康风险.
- 关于MPs在更深层土壤中的空间分布和影响因素的研究有限.
研究的目的:
- 在不同的灌模式下 (边界与滴水) 调查农田土壤 (0-100厘米) 中MP的垂直分布.
- 为了比较农田土壤中的MP丰富度与相邻的森林和草原土壤.
- 确定农业环境中MP的来源和组成,包括大气沉积,灌水,肥料和种子涂层.
主要方法:
- 在森林,草原和农田土壤的六层土壤 (0-100厘米) 中比较了MP的丰度和垂直分布.
- 从大气沉积,灌水,肥料和种子涂层中分析了MP成分.
- 评估了灌模式 (边界和滴水) 和塑料薄膜覆盖对MP分布的影响.
主要成果:
- 在0-100厘米的土壤概况中检测到MPs,与森林和草原土壤相比,农田土壤中的度明显更高.
- 随着长时间的塑料薄膜覆盖,MP的丰度增加,并且由于耕地和灌,在20-30厘米深处显示积累.
- 与滴水灌相比,边界灌导致表面土壤中MP的数量增加了两倍,这表明污染和迁移更大.
结论:
- 土壤MPs主要来源于大气沉积,灌水和农业投入.
- 灌强度和灌实践显著影响土壤中的MP分布模式.
- 了解MP的来源和分布对于制定有效的农业生态系统污染控制策略至关重要.
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